Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share [Abstract]
Net Income (Loss) Attributable to Parent	$ 27,001	$ (28,012)	$ 7,257	$ 3,899	$ (10,517)	$ 3,423	$ 9,841	$ 2,951	$ 10,145	$ 5,698	$ 27,358
Weighted-average shares-basic									37,152,768	21,417,486	21,218,233
Restricted stock award									222,572	196,957	234,307
Weighted-average shares-diluted									37,375,340	21,614,443	21,452,540
Earnings Per Share, Basic	$ 0.63	$ (0.66)	$ 0.17	$ 0.18	$ (0.49)	$ 0.16	$ 0.46	$ 0.14	$ 0.27	$ 0.27	$ 1.29
Earnings Per Share, Diluted	$ 0.63	$ (0.66)	$ 0.17	$ 0.18	$ (0.49)	$ 0.16	$ 0.45	$ 0.14	$ 0.27	$ 0.26	$ 1.28