Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
Operating Leases
Operating Lease, Right-of-Use Asset	$ 135,985	$ 117,921
Operating lease liabilities – short term	38,005	24,794
Operating lease liabilities – long term	98,347	93,127
Total operating lease liabilities	136,352
Finance Leases
Property, plant and equipment – gross	2,793
Accumulated depreciation	(1,391)
Property, plant and equipment – net	1,402	$ 1,032
Accounts payable	712
Other liabilities	708
Total finance lease liabilities	$ 1,420
Weighted Average Remaining Lease Term
Operating leases	9 years 1 month 6 days
Finance leases	2 years 2 months 12 days
Weighted Average Discount Rate
Operating leases	5.72%
Finance leases	4.79%