Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2015

Equity [Abstract]

Summary of Restricted Stock Activity

Restricted stock activity during the year ended December 31, 2015 was as follows:

	Number of Restricted Shares			Weighted Average Fair Market Value Per RSU
Outstanding at January 1, 2015		2,849,076		$	7.91
Granted:
Executive officers		2,102,615			14.63
Directors		150,000			9.31
Employees		169,296			8.03
Vested		(857,677	)		13.06
Forfeitures		(115,156	)		10.85
Outstanding at December 31, 2015		4,298,154		$	10.23

Summary of Stock Option Activity

Stock option activity for the years ended December 31, 2015, 2014 and 2013 is as follows:

	Number of Shares			Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value
Outstanding at January 1, 2013		4,279,919		$	3.70	$	4,572
Granted in 2013:
Officers and Directors		55,659		$	5.39
Others		223,135			4.47
Exercised		(115,667	)		3.25
Forfeitures		(250,119	)		2.89
Outstanding at December 31, 2013		4,192,927		$	3.82	$	9,146
Granted in 2014:
Others		420,480			13.86
Exercised		(1,332,563	)		3.48
Forfeitures		(84,744	)		5.26
Outstanding at December 31, 2014		3,196,100		$	4.32	$	22,881
Granted in 2015:
Others		684,629			8.14
Exercised		(235,480	)		3.52
Forfeitures		(247,720	)		12.65
Outstanding at December 31, 2015		3,397,529		$	5.42	$	3,124

Summary of Stock Options Outstanding

Options outstanding at December 31, 2015 are as follows:

Range of Exercise Prices	Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Aggregate Intrinsic Value
$1.00 – 5.00		1,722,191		3.96	$	2.98
$5.01 – 10.00		1,411,006		5.28	$	6.69
$10.01 – 15.00		131,797		9.07	$	12.59
$15.01 – 20.00		132,535		8.76	$	16.38
		3,397,529					$	3,124

Summary of Stock Options Exercisable

Options exercisable at December 31, 2015 are as follows:

Range of Exercise Prices	Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Aggregate Intrinsic Value
$1.00 – 5.00		1,689,064		3.90	$	2.95
$5.01 – 10.00		799,926		2.06	$	6.33
$10.01- 15.00		7,915		8.56	$	12.44
$15.01- 20.00		6,279		8.74	$	15.95
		2,503,184					$	3,114

Summary of Non-Vested Stock Options

Nonvested stock options as of December 31, 2015, and changes during the year then ended, are as follows:

Nonvested Shares	Shares			Weighted Average Grant Date Fair Value		Intrinsic Value
Nonvested at January 1, 2015		655,547
Granted		684,629
Vested		(207,797	)
Forfeited		(238,034	)
Nonvested at December 31, 2015		894,345		$	9.12	$	10