Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member] Voting [Member]	Additional Paid-In Capital [Member]	Cost of Repurchased Common Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Earnings [Member]	Non-Controlling Interest [Member]	Total
Beginning balance at Dec. 31, 2020	$ 195	$ 102,423	$ (10,191)	$ (2,635)	$ 23,645	$ 4,050	$ 117,487
Beginning balance (in shares) at Dec. 31, 2020							19,133,794
Unrealized loss on MSA investments, net of tax	0	0	0	(452)	0	0	$ (452)
Unrealized gain on derivative instruments, net of tax	0	0	0	2,448	0	0	2,448
Foreign currency translation, net of tax	0	0	0	159	0	159	318
Stock compensation expense	0	1,498	0	0	0	0	1,498
Exercise of options	$ 1	424	0	0	0	0	425
Exercise of options (in shares)	44,357
Redemption of options	$ 0	(1,466)	0	0	0	0	(1,466)
Cost of repurchased common stock	0	0	$ (5,733)	0	0	0	(5,733)
Cost of repurchased common stock (in shares)			(119,031)
Dividends	0	0	$ 0	0	(1,071)	0	(1,071)
Net income	0	0	0	0	11,783	(255)	11,528
Ending balance at Mar. 31, 2021	196	102,879	(15,924)	(480)	34,357	3,954	$ 124,982
Ending balance (in shares) at Mar. 31, 2021							19,059,120
Beginning balance at Dec. 31, 2020	195	102,423	(10,191)	(2,635)	23,645	4,050	$ 117,487
Beginning balance (in shares) at Dec. 31, 2020							19,133,794
Ending balance at Dec. 31, 2021	197	108,811	(48,869)	(195)	71,460	2,312	$ 133,716
Ending balance (in shares) at Dec. 31, 2021							18,395,476
Unrealized loss on MSA investments, net of tax	0	0	0	(1,126)	0	0	$ (1,126)
Unrealized gain on derivative instruments, net of tax							0
Foreign currency translation, net of tax	0	0	0	(5)	0	(2)	(7)
Stock compensation expense	0	1,159	0	0	0	0	1,159
Exercise of options	$ 0	245	0	0	0	0	245
Exercise of options (in shares)	25,166
Performance restricted stock units issuance	$ 1	(1)	0	0	0	0	0
Performance restricted stock units issuance (in shares)	103,843
Performance restricted stock units redeemed	$ 0	(1,141)	0	0	0	0	(1,141)
Performance restricted stock units redeemed (in shares)	(34,087)
Cost of repurchased common stock	$ 0	0	$ (10,622)	0	0	0	$ (10,622)
Cost of repurchased common stock (in shares)			(310,224)				(310,224)
Dividends	0	0	$ 0	0	(1,131)	0	$ (1,131)
Net income	0	0	0	0	10,998	(227)	10,771
Ending balance at Mar. 31, 2022	$ 198	$ 109,073	$ (59,491)	$ (1,326)	$ 81,327	$ 2,083	$ 131,864
Ending balance (in shares) at Mar. 31, 2022							18,180,174