Long-Term Debt - Obligations Under Capital Lease (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Long-Term Debt.
Average balance	$ 7,999	$ 16,224	$ 17,021
Weighted average interest rate	2.11%	2.62%	4.07%
Total interest expense	$ 169	$ 425	$ 693
Maximum daily amount outstanding	11,864	20,810	$ 28,295
Unpaid principal balance	$ 3,489	$ 11,864
Weighted average interest rate	2.11%	2.15%
Capitalized software pledged to creditors	$ 4,546	$ 7,675
Furniture, fixtures, equipment and building improvements pledged to creditors	$ 4,116	$ 5,689