Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.10.0.1
Fair Value Measurements - Additional Information (Detail)
9 Months Ended
Sep. 30, 2018
USD ($)
Fair Value Disclosures [Abstract]  
Contingent consideration $ 1,806,000
Earn-out period for contingent consideration 5 years
Fair value, assets, level 1 to level 2 transfers, amount $ 0
Fair value, assets, level 2 to level 1 transfers, amount 0
Fair value, assets, level 1 to level 3 transfers, amount 0
Fair value, assets, level 3 to level 1 transfers, amount 0
Fair value, assets, level 2 to level 3 transfers, amount 0
Fair value, assets, level 3 to level 2 transfers, amount $ 0