Common Stock (Tables)

12 Months Ended

Dec. 31, 2014

Common Stock [Abstract]

Schedule of reconciliation of changes in common shares issued

A reconciliation of the changes in common shares issued is as follows:

	Year ended December 31,
	2014		2013
Shares issued at the beginning of the year	58,265,911		53,123,978
Issued in purchase of Florida Chemical Company, Inc.	—		3,284,180
Issued in purchases of Eclipse IOR Services, LLC and SiteLark, LLC	99,681		—
Issued in payment of accrued liability	27,101		—
Issued upon exercise of warrants	1,277,250		267,000
Issued from restricted stock units	—		217,089
Issued as restricted stock award grants	525,120		802,164
Issued upon exercise of stock options	311,954		571,500
Retirement of treasury shares	(5,873,291	)	—
Shares issued at the end of the year	54,633,726		58,265,911

Schedule of stock option activity

Stock option activity for the year ended December 31, 2014 is as follows:

Options	Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Outstanding as of January 1, 2014	1,864,042		$	4.95
Exercised	(311,954	)	5.32
Forfeited	(7,128	)	17.58
Expired	—		—
Outstanding as of December 31, 2014	1,544,960		$	4.81	1.81	$	21,497,484
Vested or expected to vest at
December 31, 2014	1,544,960		$	4.81	1.81	$	21,497,484
Options exercisable as of
December 31, 2014	1,544,960		$	4.81	1.81	$	21,497,484

Schedule of restricted stock activity

Restricted stock share activity for the year ended December 31, 2014 is as follows:

Restricted Stock Shares	Shares		Weighted- Average Fair Value at Date of Grant
Non-vested at January 1, 2014	1,067,655		$	12.78
Granted	349,544		27.29
RSAs converted from 2013 restricted stock units	175,576		16.35
Vested	(705,566	)	13.65
Forfeited	(60,691	)	14.89
Non-vested at December 31, 2014	826,518		$	18.78

Schedule of restricted stock unit activity

Restricted stock unit share activity for the year ended December 31, 2014 is as follows:

Restricted Stock Unit Shares	Shares		Weighted- Average Fair Value at Date of Grant
RSU share equivalents at January 1, 2014	175,576		$	16.35
2013 RSUs converted to RSAs in 2014	(175,576	)	16.35
Share equivalents earned in 2014	352,254		24.66
RSU share equivalents at December 31, 2014	352,254		$	24.66