CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Shares	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Dec. 31, 2018		$ 121,602	$ 12,656	$ (5,884)	$ (1,171)	$ 127,262
Balance (in shares) at Dec. 31, 2018	59,186,829
Balance at Dec. 31, 2018	$ 59
Stock-based compensation		1,214				1,214
Net stock options exercised	$ 1	97				$ 98
Net stock options exercised (in shares)	69,448					274,750
Common stock issued for vested restricted stock units (in shares)	14,804
Dividends declared			(626)			$ (626)
Issuance of stock, net of issuance costs	$ 6	21,899				21,905
Issuance of stock, net of issuance costs (in shares)	5,876,872
Net income (loss)			2,680			2,680
Balance at Jun. 30, 2019		144,812	14,710	(5,884)	(1,171)	152,533
Balance (in shares) at Jun. 30, 2019	65,147,953
Balance at Jun. 30, 2019	$ 66
Balance at Mar. 31, 2019		132,935	13,231	(5,884)	(1,171)	139,174
Balance (in shares) at Mar. 31, 2019	61,833,211
Balance at Mar. 31, 2019	$ 63
Stock-based compensation		878				878
Dividends declared			(319)			(319)
Issuance of stock, net of issuance costs	$ 3	10,999				11,002
Issuance of stock, net of issuance costs (in shares)	3,314,742
Net income (loss)			1,798			1,798
Balance at Jun. 30, 2019		144,812	14,710	(5,884)	(1,171)	152,533
Balance (in shares) at Jun. 30, 2019	65,147,953
Balance at Jun. 30, 2019	$ 66
Balance at Dec. 31, 2019		148,171	16,876	(5,884)	(1,171)	158,058
Balance (in shares) at Dec. 31, 2019	66,027,925
Balance at Dec. 31, 2019	$ 66					66
Stock-based compensation		870				$ 870
Net stock options exercised (in shares)						0
Common stock issued for vested restricted stock units (in shares)	35,072
Dividends declared			(1,373)			$ (1,373)
Issuance of stock, net of issuance costs	$ 4	11,896				11,900
Issuance of stock, net of issuance costs (in shares)	4,334,500
Net income (loss)			(4,933)			(4,933)
Balance at Jun. 30, 2020		160,937	10,570	(5,884)	(1,171)	164,522
Balance (in shares) at Jun. 30, 2020	70,397,497
Balance at Jun. 30, 2020	$ 70					70
Balance at Mar. 31, 2020		158,987	13,090	(5,884)	(1,171)	165,092
Balance (in shares) at Mar. 31, 2020	69,877,925
Balance at Mar. 31, 2020	$ 70
Stock-based compensation		400				400
Common stock issued for vested restricted stock units (in shares)	35,072
Dividends declared			(708)			(708)
Issuance of stock, net of issuance costs		1,550				1,550
Issuance of stock, net of issuance costs (in shares)	484,500
Net income (loss)			(1,812)			(1,812)
Balance at Jun. 30, 2020		$ 160,937	$ 10,570	$ (5,884)	$ (1,171)	164,522
Balance (in shares) at Jun. 30, 2020	70,397,497
Balance at Jun. 30, 2020	$ 70					$ 70