Earnings (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income (loss) attributable to controlling interests before preferred shares	$ 6,229	$ (579)	$ 2,129	$ 2,989
Less: net income attributable to preferred shares - preferred return	75		150
Net income (loss) attributable to common stockholders, basic	6,154	(579)	1,979	2,989
Less: warrant derivative gain				(225)
Less: beneficial conversion feature		(1,125)		(1,125)
Less: deemed dividend for convertible preferred shares		(71)		(71)
Net income (loss) attributable to common stockholders, diluted	$ 6,154	$ (1,775)	$ 1,979	$ 1,568
Weighted-average number of common shares outstanding, basic	7,815	7,693	7,739	7,346
Add dilutive effects of non-vested shares of restricted stock	$ 342		$ 342	$ 316
Weighted-average number of common shares outstanding, diluted	8,157	7,693	8,081	7,662
Net income (loss) per common share, basic	$ 0.79	$ (0.08)	$ 0.26	$ 0.41
Net income (loss) per common share, diluted	$ 0.75	$ (0.23)	$ 0.24	$ 0.20