Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Narrative (Details)

v3.19.2
Fair Value Measurements - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Fair Value Disclosures [Abstract]    
Increase (decrease) in contingent liability $ (1.5)  
Repayments of related party debt   $ 1.0