Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Total
Balance (in shares) at Dec. 31, 2018	10,187,500
Balance at Dec. 31, 2018	$ 102	$ 80,275	$ 8,089	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			8,225		$ 8,225
Shares issued for restricted stock units (in shares)	19,431
Shares issued for restricted stock units	$ (1)
Common stock acquired and canceled (in shares)	(149,425)
Common stock acquired and canceled			(2,645)
Stock-based compensation expense		12,116
Cash dividends declared			(6,035)
Net unrealized gain				0	0
Balance (in shares) at Dec. 31, 2019	10,057,506
Balance at Dec. 31, 2019	$ 101	92,391	7,634	0	100,126
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			19,266		19,266
Shares issued for restricted stock units (in shares)	19,437
Shares issued for restricted stock units	$ (11)
Common stock acquired and canceled (in shares)	(1,032,178)
Common stock acquired and canceled			(9,065)
Stock-based compensation expense		771
Cash dividends declared			(3,768)
Net unrealized gain				0	0
Balance (in shares) at Dec. 31, 2020	9,044,765
Balance at Dec. 31, 2020	$ 90	93,162	14,067	0	107,319
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			23,159		23,159
Shares issued for restricted stock units (in shares)	26,652
Shares issued for restricted stock units	$ 1
Common stock acquired and canceled (in shares)	0
Common stock acquired and canceled			0
Stock-based compensation expense		862
Cash dividends declared			(4,077)
Net unrealized gain				144	144
Balance (in shares) at Dec. 31, 2021	9,071,417
Balance at Dec. 31, 2021	$ 91	$ 94,024	$ 33,149	$ 144	$ 127,408