Schedule II Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Allowance for credit losses
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 944	$ 1,073
Additions Charged to Costs and Expenses	(87)	286
Deductions	310	415
Balance at End of Year	547	944
Valuation allowance for deferred tax assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	1,483	752
Additions Charged to Costs and Expenses	1,807	731
Deductions	0	0
Balance at End of Year	$ 3,290	$ 1,483