Stock-based Compensation, Option Plans and Warrants (Tables)

12 Months Ended

Dec. 31, 2014

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

Weighted Average Assumptions Used in Calculating Fair Value of Options

The Company currently utilizes a standard option pricing model (Black-Scholes) to measure the fair value of stock options granted to employees and directors. The fair value for these options was estimated at the date of grant using the following weighted average assumptions for 2012, 2013 and 2014:

	2012			2013			2014
Weighted average value per option granted during the period	$	2.17		$	1.73		$	2.44
Assumptions: (1)(2)
Expected dividend yield	—		%	—		%	—		%
Volatility	81.4		%	81.2		%	80.7		%
Risk free interest rate	1.19		%	1.24		%	2.05		%
Expected life (years)	6.7			6.5			6.6
Fair value of options granted (in thousands)	$	1,324		$	1,444		$	2,666

(1)    The estimated future forfeiture rate is based on the Company’s historical forfeiture rate.

(2)    The Company does not pay dividends on its common stock.

Schedule of Stock Option Activity

The following table is a summary of the Company’s stock option activity for the three years ended December 31:

	Options (000s)		Weighted average exercise price		Weighted  average  remaining life	Intrinsic value per share
Options outstanding December 31, 2011	4,756		$	2.61
Granted	610		3.01
Exercised	(391	)	1.11
Forfeited/Expired	(214	)	2.80
Options outstanding December 31, 2012	4,761		$	2.77
Granted	836		2.43
Exercised	(166	)	1.18
Forfeited/Expired	(31	)	2.58
Options outstanding December 31, 2013	5,400		$	2.77
Granted	1,091		$	3.38
Exercised	(410	)	2.71
Forfeited/Expired	(196	)	3.08
Options outstanding December 31, 2014	5,885		$	2.88	5.9	$	2.06
Exercisable at end of year	4,112				4.7	$	2.02

Other information pertaining to the Company’s stock option activity for the three years ended December 31:

	2012		2013		2014
Weighted average grant date fair value of stock options granted  (per share)	$	2.17	$	1.73	$	2.44
Total fair value of options vested (000’s)	$	1,497	$	1,670	$	1,718
Total intrinsic value of options exercised (000’s)	$	414	$	275	$	932

Range Of Stock Option Prices and Weighted Average Remaining Life of Outstanding Options

The following table represents the range of stock option prices and the weighted average remaining life of outstanding options as of December 31, 2014:

	Options outstanding				Exercisable
	Number outstanding	Weighted average remaining life	Weighted average exercise price		Number exercisable	Weighted average remaining life	Weighted average exercise price
0.99 - 1.99	1,679,079	4.92	$	1.49	1,579,079	4.74	$	1.45
2.00 - 2.99	1,414,200	6.80	$	2.34	940,077	6.00	$	2.31
3.00 - 3.99	1,509,441	7.81	$	3.36	437,322	5.22	$	3.63
4.00 - 4.99	1,109,750	3.55	$	4.58	987,375	3.14	$	4.57
5.00 - 5.99	100,000	9.35	$	5.39	96,000	9.35	$	5.38
6.00 - 6.28	73,000	1.26	$	6.05	72,000	1.15	$	6.05
	5,885,470				4,111,853

Schedule of Restricted Stock Activity

The following table is a summary of the Company’s restricted stock activity for the three years ended December 31:

	Number of Shares		Weighted average grant date fair value
Unvested December 31, 2011	629,771		$	3.03
Granted	89,860		2.12
Vested/Released	(229,172	)	2.57
Forfeited	(8,434	)	2.42
Unvested December 31, 2012	482,025		$	3.09
Granted	48,222		2.69
Vested/Released	(169,700	)	2.66
Forfeited	(5,307	)	3.08
Unvested December 31, 2013	355,240		$	3.24
Granted	1,582,000		3.49
Vested/Released	(121,622	)	3.64
Forfeited	(39,528	)	3.44
Unvested December 31, 2014	1,776,090		$	3.43