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, 2017	$ 296,608	$ 1,828	$ 220,591	$ 70,402	$ 3,787
Balance, Shares at Dec. 31, 2017		18,278,833
Cumulative effect adjustment from adoption | ASU 2016-16 [Member]	(1,896)			(1,896)
Cumulative effect adjustment from adoption | ASU 2014-09 [Member]	4,761			4,761
Net income (loss)	13,811			13,811
Other comprehensive income (loss), net of tax	(491)				(491)
Share-based compensation	18,930		18,930
Common shares issued	3,674	$ 30	3,644
Common shares issued, Shares		300,855
Ending Balance at Dec. 31, 2018	335,397	$ 1,858	243,165	87,078	3,296
Balance, Shares at Dec. 31, 2018		18,579,688
Cumulative effect adjustment from adoption | ASU 2016-02 [Member]	70			70
Cumulative effect adjustment from adoption | ASU 2018-02 [Member]				(937)	937
Net income (loss)	(28,462)			(28,462)
Other comprehensive income (loss), net of tax	(7,272)				(7,272)
Share-based compensation	21,540		21,540
Common shares issued	6,358	$ 44	6,314
Common shares issued, Shares		442,931
Ending Balance at Dec. 31, 2019	$ 327,631	$ 1,902	271,019	57,749	(3,039)
Balance, Shares at Dec. 31, 2019	19,022,619	19,022,619
Cumulative effect adjustment from adoption | ASU 2016-13 [Member]	$ (887)			(887)
Net income (loss)	2,517			2,517
Other comprehensive income (loss), net of tax	6,291				6,291
Share-based compensation	16,207		16,207
Common shares issued	5,105	$ 40	5,065
Common shares issued, Shares		401,255
Ending 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