Goodwill and Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Balance, December 31, 2018	$ 176,031
Measurement Period Adjustment	(5,117)	[1]
Balance, June 30, 2019	$ 170,914

[1] During the six months ended June 30, 2019, the Company recorded $5.1 million of measurement period adjustments related to the acquisition of CamberView.