CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (loss)	Total
Balance at Beginning at Dec. 31, 2018		$ 141,359	$ (23,199)	$ (1,285)	$ 116,875
Balance at Beginning (in shares) at Dec. 31, 2018	7,968,420
Increase (Decrease) in Stockholders' Equity
Net income			8,009		8,009
Other comprehensive income, net of tax				1,356	1,356
Net change in unrealized gains on available-for-sale securities					1,262
Settlement of share awards		(110)			(110)
Settlement of share awards (in shares)	15,446
Adoption of ASU 2018-02			235	(235)	235
Share repurchase		(743)			(743)
Share repurchase (in shares)	(43,698)
Stock-based compensation		2,291			2,291
Balance at Ending at Dec. 31, 2019		142,797	(14,955)	(164)	127,678
Balance at Ending (in shares) at Dec. 31, 2019	7,940,168
Increase (Decrease) in Stockholders' Equity
Net income			24,534		24,534
Other comprehensive income, net of tax				844	844
Net change in unrealized gains on available-for-sale securities					844
Settlement of share awards		(261)			(261)
Settlement of share awards (in shares)	34,710
Share repurchase		(377)			(377)
Share repurchase (in shares)	(23,105)
Stock-based compensation		2,544			2,544
Balance at Ending at Dec. 31, 2020		$ 144,703	$ 9,579	$ 680	$ 154,962
Balance at Ending (in shares) at Dec. 31, 2020	7,951,773