Unaudited Condensed Consolidated Statement of Changes in Stockholders' Equity (Deficit) - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive (loss) income
Balance at December 31, 2016 (shares) at Dec. 31, 2016	196,524,010	196,524,010
Balance at December 31, 2016 at Dec. 31, 2016	$ 146,338	$ 1,965	$ 71,420	$ 72,692	$ 261
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income	$ (570)				(570)
Issuance of restricted stock (shares)	35,430
Issuance of restricted stock awards	$ 815	$ 0	815
Exercise of stock options (in shares)	252,599	252,599
Exercise of stock options	$ 1,426	$ 3	1,423
Stock-based compensation expense	475		475
Net income	$ 44,090			44,090
Balance at March 31, 2017 (shares) at Mar. 31, 2017	196,812,039	196,812,039
Balance at March 31, 2017 at Mar. 31, 2017	$ 192,574	$ 1,968	$ 74,133	$ 116,782	$ (309)