Organization and Summary of Significant Accounting Policies - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic earnings per share:
Net income available to common shareholders	$ 18,034	$ 51,448	$ 100,499
Weighted-average basic shares outstanding	40,222,758	40,056,230	36,592,893
Basic earnings per share	$ 0.45	$ 1.28	$ 2.75
Diluted earnings per share:
Net income available to common shareholders, for diluted earnings per share	$ 18,034	$ 51,448	$ 100,499
Weighted-average basic shares outstanding	40,222,758	40,056,230	36,592,893
Add effect of dilutive stock options and restricted stock grants	830,756	1,390,520	1,266,642
Total weighted-average diluted shares outstanding	41,053,514	41,446,750	37,859,535
Diluted earnings per share	$ 0.44	$ 1.24	$ 2.65
Anti-dilutive shares	1,071,467	1,111,236	253,338