Unaudited Consolidated Statement of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total USD ($)	Common Stock USD ($)	Treasury Stock USD ($)	Additional Paid-in Capital USD ($)	Accumulated Other Comprehensive Income (Loss) USD ($)	Accumulated Deficit USD ($)	EOGA [Member] USD ($)	EOGA [Member] Common Stock	EOGA [Member] Additional Paid-in Capital USD ($)	SiteLark [Member] USD ($)	SiteLark [Member] Common Stock	SiteLark [Member] Additional Paid-in Capital USD ($)
Beginning balance at Dec. 31, 2013	$ 249,752	$ 6	$ (15,176)	$ 266,122	$ (359)	$ (841)
Beginning balance, shares at Dec. 31, 2013		58,266,000	5,394,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	23,058					23,058
Other comprehensive income	29				29
Common stock issued under employee stock purchase plan	505			505
Common stock issued in payment of stock purchase plan, shares			(17,000)
Common stock issued in payment of accrued liability	600			600
Common stock issued in payment of accrued liability, shares		27,000
Stock warrants exercised	1,545			1,545
Stock warrants exercised, shares		1,277,000
Stock options exercised	1,455			1,455
Stock options exercised, shares		289,000
Stock surrendered for exercise of stock options	(1,005)		(1,005)
Stock surrendered for exercise of stock options, shares			39,000
Restricted stock granted	0			0
Restricted stock granted, shares		515,000
Restricted stock forfeited, shares			28,000
Treasury stock acquired related to tax withholding for share-based awards	(5,961)		(5,961)
Treasury stock acquired related to tax withholding for share-based awards, shares			230,000
Excess tax benefit related to share-based awards	3,373			3,373
Stock compensation expense	4,756			4,756
Stock issued in acquisition	1,900						1,750		1,750	150		150
Stock issued in acquisition, shares								94,000			5,000
Ending balance at Jun. 30, 2014	$ 280,007	$ 6	$ (22,142)	$ 280,256	$ (330)	$ 22,217
Ending balance, shares at Jun. 30, 2014		60,473,000	5,674,000