Acquisitions and Divestitures (Details 3) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Acquisitions and Divestitures [Line Items]
Revenue		$ 33,256	$ 35,122
Net (loss) income before non-controlling interests		5,232	13,969
Net (loss) income attributable to non-controlling interests		(2,334)	92
Net (loss) income attributable to controlling interests		$ 7,566	$ 13,877
Net income per share (basic)		$ 1	$ 2.49
Net income per share (diluted)		$ 0.96	$ 2.14
Old Ironsides [Member]
Acquisitions and Divestitures [Line Items]
Revenue	$ 54,058	$ 136,592
Net (loss) income before non-controlling interests	7,208	11,320
Net (loss) income attributable to non-controlling interests	81	4,375
Net (loss) income attributable to controlling interests	$ 7,127	$ 5,596
Net income per share (basic)	$ 1.26	$ 0.74
Net income per share (diluted)	$ 0.62	$ 0.69