Commitments and Contingencies - Schedule of Additional Leases Information (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Supplemental Income Statement Information:
Operating lease cost	$ 4,167	$ 8,300
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 4,969	$ 9,837
Other Information
Weighted-average remaining lease term - operating leases	5 years 1 month 6 days	5 years 1 month 6 days
Weighted-average discount rate - operating leases	4.00%	4.00%
Right-of-use assets obtained in exchange for lease obligations (e.g. new leases commenced during the period):		$ 1,172