Leases - Balance Sheet Classification (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019
Assets [Abstract]
Operating lease assets	$ 310,238
Finance lease assets	906
Total leased assets	311,144	$ 384,187
Liabilities, Current [Abstract]
Current portion of operating lease liabilities	23,736
Finance Lease, Current	231
Liabilities, Noncurrent [Abstract]
Operating lease liabilities, less current portion	295,636
Finance lease, non current	445
Total lease liabilities	320,048	$ 389,403
Accumulated amortization of finance leases	$ 1,522