Leases - Summary of Rent Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Operating lease costs	$ 9,444	$ 8,610	$ 18,770	$ 17,505
Short-term lease costs	442	322	873	1,003
Variable lease costs	1	172	1	184
Total rent expense	$ 9,887	$ 9,104	$ 19,644	$ 18,692