Debt (Details) - USD ($) $ in Thousands		Jun. 30, 2023	Dec. 31, 2022
Long term debt and capital lease obligations
Current		$ 21,110	$ 24,578
Debt		448,276	491,355
Senior Notes due 2029
Long term debt and capital lease obligations
Net unamortized debt issuance costs		4,600	5,800
Senior Notes due 2029
Long term debt and capital lease obligations
Debt	[1]	321,869	369,212
Revolving Credit Facility
Long term debt and capital lease obligations
Debt	[2]	80,000	80,000
Finance Lease Obligations
Long term debt and capital lease obligations
Debt		46,407	42,143
Senior Notes due 2029
Long term debt and capital lease obligations
Current	[1]	0	0
Revolving Credit Facility
Long term debt and capital lease obligations
Current	[2]	0	0
Finance Lease Obligations
Long term debt and capital lease obligations
Current		21,110	24,578
Revolving Credit Facility
Long term debt and capital lease obligations
Net unamortized debt issuance costs		$ 2,800	$ 3,600

[1] Net of unamortized debt issuance costs of $4.6 million and $5.8 million at June 30, 2023 and December 31, 2022, respectively.

[2] Unamortized debt issuance costs of $2.8 million and $3.6 million at June 30, 2023 and December 31, 2022, respectively, included in Other Non-Current Assets