Operating Leases - Summary of Supplemental Balance Sheet Information Pertaining To Operating Leases (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities for operating leases	$ 3,870	$ 7,880
Right of use assets obtained in exchange for lease liabilities	$ 1,105	$ 117,723
Weighted average remaining lease term (in years)	12 years 11 months 4 days	12 years 11 months 4 days
Weighted average discount rate	3.55%	3.55%