Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Shares [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2019	$ 327,631	$ 1,902	$ 271,019	$ 57,749	$ (3,039)
Balance, Shares at Dec. 31, 2019		19,022,619
Cumulative effect adjustment from adoption | ASU 2016-13 [Member]	(887)			(887)
Net income (loss)	25,665			25,665
Other comprehensive income (loss), net of tax	(1,711)				(1,711)
Share-based compensation expense	3,859		3,859
Common shares issued, net	812	$ 4	808
Common shares issued, net, Shares		33,559
Ending Balance at Mar. 31, 2020	355,369	$ 1,906	275,686	82,527	(4,750)
Balance, Shares at Mar. 31, 2020		19,056,178
Beginning Balance at Dec. 31, 2019	327,631	$ 1,902	271,019	57,749	(3,039)
Balance, Shares at Dec. 31, 2019		19,022,619
Net income (loss)	11,895
Other comprehensive income (loss), net of tax	2,048
Ending Balance at Sep. 30, 2020	354,896	$ 1,927	285,203	68,757	(991)
Balance, Shares at Sep. 30, 2020		19,267,420
Beginning Balance at Mar. 31, 2020	355,369	$ 1,906	275,686	82,527	(4,750)
Balance, Shares at Mar. 31, 2020		19,056,178
Net income (loss)	(18,424)			(18,424)
Other comprehensive income (loss), net of tax	1,484				1,484
Share-based compensation expense	4,699		4,699
Common shares issued, net	1,917	$ 15	1,902
Common shares issued, net, Shares		152,885
Ending Balance at Jun. 30, 2020	345,045	$ 1,921	282,287	64,103	(3,266)
Balance, Shares at Jun. 30, 2020		19,209,063
Net income (loss)	4,654			4,654
Other comprehensive income (loss), net of tax	2,275				2,275
Share-based compensation expense	3,841		3,841
Common shares issued, net	(919)	$ 6	(925)
Common shares issued, net, Shares		58,357
Ending Balance at Sep. 30, 2020	354,896	$ 1,927	285,203	68,757	(991)
Balance, Shares at Sep. 30, 2020		19,267,420
Beginning Balance at Dec. 31, 2020	$ 356,864	$ 1,942	292,291	59,379	3,252
Balance, Shares at Dec. 31, 2020	19,423,874	19,423,874
Net income (loss)	$ (5,816)			(5,816)
Other comprehensive income (loss), net of tax	(1,573)				(1,573)
Share-based compensation expense	3,721		3,721
Common shares issued, net	1,622	$ 5	1,617
Common shares issued, net, Shares		50,510
Ending Balance at Mar. 31, 2021	354,818	$ 1,947	297,629	53,563	1,679
Balance, Shares at Mar. 31, 2021		19,474,384
Beginning Balance at Dec. 31, 2020	$ 356,864	$ 1,942	292,291	59,379	3,252
Balance, Shares at Dec. 31, 2020	19,423,874	19,423,874
Net income (loss)	$ (5,567)
Other comprehensive income (loss), net of tax	(1,988)
Ending Balance at Sep. 30, 2021	$ 364,833	$ 1,974	307,783	53,812	1,264
Balance, Shares at Sep. 30, 2021	19,741,410	19,741,410
Beginning Balance at Mar. 31, 2021	$ 354,818	$ 1,947	297,629	53,563	1,679
Balance, Shares at Mar. 31, 2021		19,474,384
Net income (loss)	2,420			2,420
Other comprehensive income (loss), net of tax	(81)				(81)
Share-based compensation expense	3,907		3,907
Common shares issued, net	1,220	$ 20	1,200
Common shares issued, net, Shares		194,745
Ending Balance at Jun. 30, 2021	362,284	$ 1,967	302,736	55,983	1,598
Balance, Shares at Jun. 30, 2021		19,669,129
Net income (loss)	(2,171)			(2,171)
Other comprehensive income (loss), net of tax	(334)				(334)
Share-based compensation expense	3,842		3,842
Common shares issued, net	1,212	$ 7	1,205
Common shares issued, net, Shares		72,281
Ending Balance at Sep. 30, 2021	$ 364,833	$ 1,974	$ 307,783	$ 53,812	$ 1,264
Balance, Shares at Sep. 30, 2021	19,741,410	19,741,410