Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement - Additional Information (Detail)

v3.7.0.1
Fair Value Measurement - Additional Information (Detail) - USD ($)
Jun. 30, 2017
Dec. 31, 2016
Fair Value Disclosures [Abstract]    
Debt instruments fair value $ 0 $ 0
Cash equivalents $ 0 $ 0