Segment Reporting - Reconciliation of EBITDA to net income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Reconciliation of total segment EBITDA to income before taxes
Total segment EBITDA	$ 18,610	$ 19,608	$ 39,805	$ 36,576
Interest, net	(7,146)	(7,037)	(15,011)	(16,013)
Income tax expense	(1,742)	(2,522)	(5,460)	(3,882)
Depreciation and amortization	(3,571)	(3,817)	(7,181)	(8,039)
Net income	$ 6,151	$ 6,232	$ 12,153	$ 8,642