Leases - Schedule of Lease Cost and Assumptions (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 3,357
Cash paid for amounts included in the measurement of operating liabilities	2,640
Right-of-use assets obtained in exchange for new lease liabilties	$ 3,470
Weighted-average remaining lease term - operating leases	4 years 3 months 29 days
Weighted-average discount rate - operating leases	5.70%