Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.7.0.1
Fair Value Measurements - Additional Information (Detail) - USD ($)
Jun. 30, 2017
Dec. 31, 2016
Fair Value Disclosures [Abstract]    
Assets at fair value on recurring basis $ 0 $ 0
Liabilities at fair value on recurring basis $ 0 $ 0