Leases - Schedule of Other Operating Lease Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 2,960
Leased assets exchanged for new operating lease liabilities	$ 5,789
Weighted-average remaining terms (years)	4 years 6 months
Weighted-average discount rate	4.16%