Other Assets, Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Jun. 30, 2019
Schedule of Equity Method Investments [Line Items]
Assets held in Rabbi Trust	$ 37,231		$ 36,164
Right-of-use assets for operating leases, net	15,907		16,835
Capitalized software, net	13,811		12,802
Equity method investments	11,997		10,488
Deferred loan costs, net	413		501
Other non-current assets	621		785
Total Other assets, net	79,980		77,575
Accumulated amortization of capitalized software	34,400		$ 34,000
Loss on equity method investment	491	$ 595
WorkLLama
Schedule of Equity Method Investments [Line Items]
Ownership percentage				50.00%
Loss on equity method investment	$ 500	$ 600