CONSOLIDATED STATEMENTS OF MEZZANINE AND STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Common Stock Outstanding	Additional Paid-in Capital	Retained Earnings	Noncontrolling Interest	Noncontrolling Interest Mezzanine
Equity, beginning balance at Dec. 31, 2018	$ 181,544	$ 35	$ 162,723	$ 17,788	$ 998	$ 225,117
Equity, beginning balance (in shares) at Dec. 31, 2018		34,578,000
Net (loss) income	550			140	410	(3,000)
Purchase of treasury shares	0					(40)
Purchase of treasury shares (in shares)		(93,000)
Shares issued for exercise of options and warrants (in shares)		17,000
Shares issued for exercise of options and warrants	140		140			155
Share-based compensation	143		143			202
Share-based compensation (in shares)		2,000
Dividends	0					(10,000)
Equity, ending balance at Mar. 31, 2019	182,377	$ 35	163,006	17,928	1,408	212,434
Equity, ending balance (in shares) at Mar. 31, 2019		34,504,000
Net (loss) income	3,768			3,545	223	6,896
Shares issued for exercise of options and warrants (in shares)		135,000
Shares issued for exercise of options and warrants	758		758			50
Share-based compensation	128		128			203
Dividends	(942)				(942)
Equity, ending balance at Jun. 30, 2019	186,089	$ 35	163,892	21,473	689	219,583
Equity, ending balance (in shares) at Jun. 30, 2019		34,639,000
Net (loss) income	4,455			3,704	751	6,285
Shares issued for exercise of options and warrants (in shares)		184,000
Shares issued for exercise of options and warrants	1,502		1,502
Share-based compensation	128		128			202
Stock subscriptions	0					550
Stock issued in connection with a business combination	0					414
Cost related to issuance of preferred shares	0					(804)
Dividends	0					(50,000)
Equity, ending balance at Sep. 30, 2019	192,174	$ 35	165,522	25,177	1,440	176,230
Equity, ending balance (in shares) at Sep. 30, 2019		34,823,000
Equity, beginning balance at Dec. 31, 2019	192,335	$ 36	159,608	31,905	786	168,725
Equity, beginning balance (in shares) at Dec. 31, 2019		35,908,057
Net (loss) income	4,147			4,052	95	(1,161)
Purchase of treasury shares	(301)		(301)
Purchase of treasury shares (in shares)		(16,897)
Purchase of noncontrolling interest	0					(125)
Shares issued for exercise of options and warrants (in shares)		151,601
Shares issued for exercise of options and warrants	722		722
Share-based compensation	1,058		1,058
Dividends	0					(10,000)
Equity, ending balance at Mar. 31, 2020	197,961	$ 36	161,087	35,957	881	157,439
Equity, ending balance (in shares) at Mar. 31, 2020		36,042,761
Equity, beginning balance at Dec. 31, 2019	$ 192,335	$ 36	159,608	31,905	786	168,725
Equity, beginning balance (in shares) at Dec. 31, 2019		35,908,057
Shares issued for exercise of cashless warrants (in shares)	66,517
Equity, ending balance at Sep. 30, 2020	$ 229,418	$ 37	168,653	59,714	1,014	198,731
Equity, ending balance (in shares) at Sep. 30, 2020		36,775,817
Equity, beginning balance at Mar. 31, 2020	197,961	$ 36	161,087	35,957	881	157,439
Equity, beginning balance (in shares) at Mar. 31, 2020		36,042,761
Net (loss) income	7,335			7,044	291	73,667
Purchase of noncontrolling interest	0					(126)
Shares issued for vesting of restricted stock awards (in shares)		24,453
Shares issued for vesting of restricted stock awards	0
Shares issued for exercise of options and warrants (in shares)		242,299
Shares issued for exercise of options and warrants	2,283		2,283
Share-based compensation	852		852
Cancellation of restricted stock awards	(236)		(236)
Dividends	(347)				(347)	(20,000)
Equity, ending balance at Jun. 30, 2020	207,848	$ 36	163,986	43,001	825	210,980
Equity, ending balance (in shares) at Jun. 30, 2020		36,309,513
Net (loss) income	16,902			16,713	189	8,522
Purchase of noncontrolling interest	0					(771)
Shares issued for exercise of cashless warrants (in shares)		66,517
Shares issued for cashless exercise of warrants	0
Shares issued for exercise of options and warrants (in shares)		399,787
Shares issued for exercise of options and warrants	4,020	$ 1	4,019
Share-based compensation	648		648
Dividends	0					(20,000)
Equity, ending balance at Sep. 30, 2020	$ 229,418	$ 37	$ 168,653	$ 59,714	$ 1,014	$ 198,731
Equity, ending balance (in shares) at Sep. 30, 2020		36,775,817