Lease Commitments - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Leased Assets [Line Items]
Lease, Cost	$ 101,729
Lease Expiration Date	2033
Operating Leases, Rent Expense, Net		$ 88,988	$ 83,636