Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Net Income (Loss) Attributable to Parent	$ (11,071)	$ (11,708)	$ 14,701	$ 8,369	$ 27,001	$ (28,012)	$ 7,257	$ 3,899	$ 290	$ 10,145	$ 5,698
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (10,968)	$ (11,707)	$ 14,701	$ 8,369	$ 27,001	$ (28,012)	$ 7,257	$ 3,899	$ 394	$ 10,145	$ 5,698
Weighted-average shares-basic									42,650,629	37,152,768	21,417,486
Restricted stock award									188,257	222,572	196,957
Weighted-average shares-diluted									42,838,886	37,375,340	21,614,443
Earnings Per Share, Basic	$ (0.26)	$ (0.27)	$ 0.34	$ 0.20	$ 0.63	$ (0.66)	$ 0.17	$ 0.18	$ 0.01	$ 0.27	$ 0.27
Earnings Per Share, Diluted	$ (0.26)	$ (0.27)	$ 0.34	$ 0.20	$ 0.63	$ (0.66)	$ 0.17	$ 0.18	$ 0.01	$ 0.27	$ 0.26