CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (loss)	Total
Balance at Beginning at Dec. 31, 2019		$ 142,797	$ (14,955)	$ (164)	$ 127,678
Balance at Beginning (in shares) at Dec. 31, 2019	7,940,168
Increase (Decrease) in Stockholders' Equity
Net income			19,660		19,660
Other comprehensive loss, net of tax				987	987
Settlement of share awards		(258)			(258)
Settlement of share awards (in shares)	34,260
Share repurchase		(370)			(370)
Share repurchase (in shares)	(22,679)
Stock-based compensation		1,879			1,879
Balance at Ending at Sep. 30, 2020		144,048	4,705	823	149,576
Balance at Ending (in shares) at Sep. 30, 2020	7,951,749
Balance at Beginning at Jun. 30, 2020		143,498	(4,925)	844	139,417
Balance at Beginning (in shares) at Jun. 30, 2020	7,939,024
Increase (Decrease) in Stockholders' Equity
Net income			9,630		9,630
Other comprehensive loss, net of tax				(21)	(21)
Settlement of share awards		(88)			(88)
Settlement of share awards (in shares)	12,725
Stock-based compensation		638			638
Balance at Ending at Sep. 30, 2020		144,048	4,705	823	149,576
Balance at Ending (in shares) at Sep. 30, 2020	7,951,749
Balance at Beginning at Dec. 31, 2020		144,703	9,579	680	154,962
Balance at Beginning (in shares) at Dec. 31, 2020	7,951,773
Increase (Decrease) in Stockholders' Equity
Net income			18,693		18,693
Other comprehensive loss, net of tax				(203)	(203)
Settlement of share awards		(452)			(452)
Settlement of share awards (in shares)	47,351
Options exercised		79			79
Options exercised (in shares)	3,750
Stock-based compensation		2,050			2,050
Balance at Ending at Sep. 30, 2021		146,380	28,272	477	175,129
Balance at Ending (in shares) at Sep. 30, 2021	8,002,874
Balance at Beginning at Jun. 30, 2021		145,622	21,855	509	167,986
Balance at Beginning (in shares) at Jun. 30, 2021	7,994,832
Increase (Decrease) in Stockholders' Equity
Net income			6,417		6,417
Other comprehensive loss, net of tax				(32)	(32)
Settlement of share awards		(46)			(46)
Settlement of share awards (in shares)	4,292
Options exercised		79			79
Options exercised (in shares)	3,750
Stock-based compensation		725			725
Balance at Ending at Sep. 30, 2021		$ 146,380	$ 28,272	$ 477	$ 175,129
Balance at Ending (in shares) at Sep. 30, 2021	8,002,874