Leases - Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease assets	$ 152,245	$ 159,777
Current operating lease liabilities	39,595	35,727
Noncurrent operating lease liabilities	161,753	176,378
Total lease liabilities	$ 201,348	$ 212,105
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent