Other Assets, Net (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Jun. 30, 2019
Schedule of Equity Method Investments [Line Items]
Assets held in Rabbi Trust	$ 39,608	$ 39,608		$ 36,164
Right-of-use assets for operating leases, net	17,699	17,699		16,835
Capitalized software, net	14,696	14,696		12,802
Equity method investment	13,966	13,966		10,488
Deferred loan costs, net	324	324		501
Other non-current assets	839	839		785
Total Other assets, net	87,132	87,132		77,575
Accumulated amortization of capitalized software	34,800	34,800		$ 34,000
Loss on equity method investment		1,022	$ 1,134
WorkLLama
Schedule of Equity Method Investments [Line Items]
Ownership percentage					50.00%
Loss on equity method investment	$ 500	$ 1,000