Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.7.0.1
Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Income Taxes [Line Items]    
Uncertain tax position accrued $ 0 $ 0
Uncertain tax positions interest and penalties accrued 0 0
Increase in the valuation allowance 5,900,000  
Deferred tax asset for net operating loss carryforwards   $ 8,900,000
Federal [Member]    
Income Taxes [Line Items]    
Net operating loss carryforward 12,900,000  
State [Member]    
Income Taxes [Line Items]    
Net operating loss carryforward 9,800,000  
Australia [Member]    
Income Taxes [Line Items]    
Net operating loss carryforward 300,000  
Germany [Member] | Corporate Income Tax [Member]    
Income Taxes [Line Items]    
Net operating loss carryforward 66,300,000  
Germany [Member] | Trade Tax [Member]    
Income Taxes [Line Items]    
Net operating loss carryforward $ 64,900,000