CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY Statement - USD ($) shares in Thousands, $ in Thousands	Total	Common stock [Member]	Treasury stock [Member]	Additional paid-in capital [Member]	Retained earnings (deficit) [Member]
Stockholders' equity, beginning of period at Dec. 31, 2013	$ 82,229	$ 392	$ (1,234)	$ 169,970	$ (86,899)
Stockholders' Equity [Abstract]
Shares vested for long-term incentive plan	0	3	188	(191)
Shares repurchased	(1,607)		(1,607)
Stock compensation expense	3,410			3,410
Tax benefits related to stock based compensation plans	1,014			1,014
Net income (loss)	94,032				94,032
Stockholders' equity, end of period at Dec. 31, 2014	179,078	$ 395	$ (2,653)	174,203	7,133
Common stock outstanding, beginning of period (in shares) at Dec. 31, 2013		39,173
Treasury shares, beginning of period (in shares) at Dec. 31, 2013			484
Stockholders Equity, Common Shares [Abstract]
Shares vested for long-term incentive plan (in shares)		(282)	(126)
Shares repurchased (shares)			124
Common stock outstanding, end of period (in shares) at Dec. 31, 2014		39,455
Treasury shares, end of period (in shares) at Dec. 31, 2014			482
Stockholders' Equity [Abstract]
Effect of reverse merger	453,390	$ 262		453,128
Cancellation of Legacy BMC treasury stock in connection with the Merger	0	4	$ (3,487)	3,483
Shares vested for long-term incentive plan	0	1	194	(195)
Shares repurchased	(1,454)		(1,454)
Stock compensation expense	2,749			2,749
Net income (loss)	(4,831)				(4,831)
Stockholders' equity, end of period at Dec. 31, 2015	$ 628,932	$ 654	$ (426)	626,402	2,302
Stockholders Equity, Common Shares [Abstract]
Cancellation of Legacy BMC treasury stock in connection with the Merger (shares)		(434)	(434)
Shares vested for long-term incentive plan (in shares)		(153)	(126)
Shares repurchased (shares)			103
Common stock outstanding, end of period (in shares) at Dec. 31, 2015	65,300	65,360
Treasury shares, end of period (in shares) at Dec. 31, 2015	100		25
Stockholders' Equity [Abstract]
Issuance of common stock, net of offering costs	$ 13,776	$ 8		13,768
Exercise of stock options	1,301	2		1,299
Shares vested for long-term incentive plan	0	4		(4)
Shares repurchased	(2,023)		$ (2,023)
Share withholdings made in satisfaction of exercise price	0		(80)	80
Stock compensation expense	7,252			7,252
Other	483			483
Net income (loss)	30,880				30,880
Stockholders' equity, end of period at Dec. 31, 2016	$ 680,601	$ 668	$ (2,529)	$ 649,280	$ 33,182
Stockholders Equity, Common Shares [Abstract]
Effect of reverse merger (shares)		26,186
Issuance of common stock (in shares)		855
Exercise of stock options (in shares)		175
Shares vested for long-term incentive plan (in shares)		(424)
Shares repurchased (shares)			119
Share withholdings made in satisfaction of exercise price (shares)			4
Common stock outstanding, end of period (in shares) at Dec. 31, 2016	66,700	66,814
Treasury shares, end of period (in shares) at Dec. 31, 2016	100		148