|
Condensed Consolidated Balance Sheets (USD $)
|
Mar. 31, 2015
|
Dec. 31, 2014
|
|---|---|---|
| Current assets: | ||
| Cash and cash equivalents | $ 13,167,036us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 18,474,211us-gaap_CashAndCashEquivalentsAtCarryingValue |
| Other current assets | 1,275,714us-gaap_OtherAssetsCurrent | 1,207,072us-gaap_OtherAssetsCurrent |
| Prepaid expenses | 507,390us-gaap_PrepaidExpenseCurrent | 109,332us-gaap_PrepaidExpenseCurrent |
| Income tax receivable | 15,232us-gaap_IncomeTaxesReceivable | 14,810us-gaap_IncomeTaxesReceivable |
| Total current assets | 14,965,372us-gaap_AssetsCurrent | 19,805,425us-gaap_AssetsCurrent |
| Property and equipment, net | 1,785,789us-gaap_PropertyPlantAndEquipmentNet | 2,052,221us-gaap_PropertyPlantAndEquipmentNet |
| Deferred tax asset | 23,541us-gaap_DeferredTaxAssetsNetNoncurrent | 26,522us-gaap_DeferredTaxAssetsNetNoncurrent |
| Total assets | 16,774,702us-gaap_Assets | 21,884,168us-gaap_Assets |
| Current liabilities: | ||
| Trade accounts payable | 1,539,706us-gaap_AccountsPayableTradeCurrent | 1,260,015us-gaap_AccountsPayableTradeCurrent |
| Accrued expenses | 413,395us-gaap_AccruedLiabilitiesCurrent | 743,866us-gaap_AccruedLiabilitiesCurrent |
| Other current liabilities | 274,255us-gaap_OtherLiabilitiesCurrent | 242,755us-gaap_OtherLiabilitiesCurrent |
| Bank loan, including accrued interest | 1,270,605us-gaap_LoansPayableToBankCurrent | |
| Deferred tax liabilities | 23,541us-gaap_DeferredTaxLiabilitiesCurrent | 26,522us-gaap_DeferredTaxLiabilitiesCurrent |
| Total current liabilities | 2,250,897us-gaap_LiabilitiesCurrent | 3,543,763us-gaap_LiabilitiesCurrent |
| Accrued expenses, non-current | 296,452us-gaap_OtherAccruedLiabilitiesNoncurrent | 333,988us-gaap_OtherAccruedLiabilitiesNoncurrent |
| Total liabilities | 2,547,349us-gaap_Liabilities | 3,877,751us-gaap_Liabilities |
| Stockholders' equity | ||
| Common stock, $0.001 par value per share, 300,000,000 shares authorized and 29,429,522 and 29,279,522 issued and outstanding at March 31, 2015 and December 31, 2014 | 29,430us-gaap_CommonStockValue | 29,280us-gaap_CommonStockValue |
| Additional paid-in capital | 85,155,534us-gaap_AdditionalPaidInCapital | 84,627,283us-gaap_AdditionalPaidInCapital |
| Accumulated other comprehensive loss | (1,445,829)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | (843,097)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax |
| Accumulated deficit | (69,511,782)us-gaap_RetainedEarningsAccumulatedDeficit | (65,807,048)us-gaap_RetainedEarningsAccumulatedDeficit |
| Total stockholders' equity | 14,227,353us-gaap_StockholdersEquity | 18,006,417us-gaap_StockholdersEquity |
| Total liabilities and stockholders' equity | $ 16,774,702us-gaap_LiabilitiesAndStockholdersEquity | $ 21,884,168us-gaap_LiabilitiesAndStockholdersEquity |
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of obligations incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount after allocation of valuation allowances of noncurrent deferred tax asset attributable to deductible temporary differences and carryforwards. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of current portion of long-term loans payable to bank due within one year or the operating cycle if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The noncurrent portion (due beyond one year or one operating cycle) of other accrued expenses (expenses incurred at the end of the reporting period but not yet paid) not otherwise defined in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|