STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Weighted-average assumptions

The assumptions used to compute the fair value of options for the years ending December 31, 2015, 2014 and 2013 were:

	2015		2014		2013
Expected volatility	62.3	%	61.0	%	61.8	%
Risk-free interest rate	2.20	%	2.50	%	2.13	%
Expected life of options	8.9 years		5.7 years		5.5 years
Dividend rate	—		—		—

Stock option activity

A summary of stock option activity for the Equity Compensation Plans through December 31, 2015 was as follows:

	Options		Weighted Average Exercise Price		Aggregate Intrinsic Value (thousands)		Weighted Average Remaining Contractual Life
Balance at December 31, 2014	6,837,006		$	7.65	$	4,150	7.4 years
Granted	1,436,500		$	3.02
Exercised	(600	)	$	2.73
Forfeited and expired	(1,637,309	)	$	8.42
Balance at December 31, 2015	6,635,597		$	6.46	$	2	5.8 years
Outstanding options less expected forfeitures at December 31, 2015	6,335,391		$	6.51	$	2	5.7 years
Exercisable at December 31, 2015	4,384,108		$	7.05	$	2	4.2 years

Outstanding and exercisable stock options

The following table outlines our outstanding and exercisable stock options as of December 31, 2015:

	Options Outstanding				Options Exercisable
Range of Option Exercise Price	Outstanding Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life	Options Exercisable	Weighted Average Exercise Price
$1.71 - $4.13	1,567,250	$	2.66	8.0 years	348,250	$	2.47
$4.14 - $8.25	3,885,681	$	6.51	5.0 years	3,110,026	$	6.34
$8.26- $12.38	762,500	$	10.39	5.5 years	619,168	$	10.25
$12.39 - $14.44	412,166	$	12.91	6.0 years	301,331	$	12.9
$14.45 - $18.57	8,000	$	16.63	7.6 years	5,333	$	16.63
All options	6,635,597	$	6.46	5.8 years	4,384,108	$	7.05

Restricted stock award activity

A summary of restricted stock award activity through December 31, 2015 was as follows:

	Restricted Stock		Weighted Average Grant Date Fair Value		Weighted Average Remaining Recognition Period
Balance at December 31, 2014	179,997		$	9.31	0.4 years
Granted	68,000		$	3.55
Awards Vested	(147,000	)	$	4.92
Canceled	(50,999	)	$	11.77
Balance at December 31, 2015	49,998		$	11.89	2.2 years

SAR activity

A summary of SAR activity through December 31, 2015 was as follows:

	Stock Appreciation Rights		Weighted Average Exercise Price		Weighted Average Remaining Recognition Period
Balance at December 31, 2014	320,000		$	6.65	0.3 years
Granted	—		$	—
Exercised	—		$	—
Canceled	(20,000	)	$	9.16
Balance at December 31, 2015	300,000		$	6.48	0.0 years