Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2016

Restricted stock activity during the year ended December 31, 2016 was as follows:


	Number of Restricted Shares			Weighted Average Fair Market Value Per RSU
Outstanding at January 1, 2016		4,298,154		$	10.23
Granted:
Executive officers		805,616			3.80
Directors		185,000			2.43
Employees		713,000			3.64
Vested		(592,066	)		2.68
Forfeitures		(92,000	)		4.14
Conversions		(733,407	)		10.44

Outstanding at December 31, 2016		4,584,797		$	7.29

Summary of Stock Option Activity

Stock option activity for the years ended December 31, 2016, 2015 and 2014 is as follows:


	Number of Shares			Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value
Outstanding at January 1, 2014		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

Granted in 2016:
Officers and Directors		95,000		$	2.34
Others		558,373			3.12
Exercised		(147,425	)		2.01
Forfeitures		(434,486	)		13.17

Outstanding at December 31, 2016		3,468,991		$	4.14	$	0

Summary of Stock Options Outstanding

Options outstanding at December 31, 2016 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		2,126,448		4.84	$	2.98
$5.01 – 10.00		1,202,258		3.53	$	6.52
$10.01 – 15.00		67,250		8.11	$	13.19
$15.01 – 20.00		73,035		7.76	$	16.30

		3,468,991					$	0

Summary of Stock Options Exercisable

Options exercisable at December 31, 2016 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		1,605,457		3.30	$	3.05
$5.01 – 10.00		960,297		2.26	$	6.45
$10.01 - 15.00		25,117		8.08	$	13.27
$15.01 - 20.00		48,689		7.76	$	16.30

		2,639,560					$	0

Summary of Non-Vested Stock Options

Nonvested stock options as of December 31, 2016, 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, 2016		894,345
Granted		653,373
Vested		(283,801	)
Forfeited		(434,486	)

Nonvested at December 31, 2016		829,431		$	4.88	$	0

Summary of Allocated Stock-based Compensation Expense

The Company’s stock-based compensation expense is allocated between research and development and selling, general and administrative as follows as of December 31:


Stock-based compensation expense	2016		2015		2014
Research and Development	$	2.5	$	4.2	$	—
Selling, General and Administrative	$	12.4	$	12.8	$	6.7