Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional Information (Details)

v3.10.0.1
Fair Value Measurements - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2018
Fair Value Disclosures [Abstract]    
Property and equipment impairment expense $ 0 $ 0
Additions or disposals of Goodwill $ 0 $ 0