Leases - Schedule of Leased Assets (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Lease cost:
Total lease cost	$ 3,299	$ 6,562
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows related to operating leases	3,267	6,692
Non-cash other information:
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 746	$ 2,629
Weighted-average remaining lease term (in years):
Operating leases	11 years	11 years
Weighted-average discount rate:
Operating leases	4.32%	4.32%