Basis of Presentation - Earnings per Common Share (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Total net income (loss) attributable to common stockholders	$ 11,532,000	$ (47,453,000)
Less: allocation to participating securities	(4,270,000)	0
Net income (loss) attributable to common stockholders - basic	7,262,000	(47,453,000)
Net income (loss) attributable to common stockholders - diluted	(329,000)	0
Unrealized gain on Warrants, net of income tax	$ 6,933,000	$ (47,453,000)
Basic (in shares)	24,619,730	22,252,149
Warrants converted under the Treasury Stock method (in shares)	181,413	0
Diluted (in shares)	24,801,143	22,252,149
Basic (in dollars per share)	$ 0.29	$ (2.13)
Diluted (in dollars per share)	$ 0.28	$ (2.13)