Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

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

Summary of Stock Options Outstanding

The following table summarizes stock options outstanding and changes during the years ended December 31, 2014 and 2013:

	2014					2013
	Number of stock options			Weighted Average Exercise Price		Number of stock options			Weighted Average Exercise Price
Stock options outstanding at beginning of period		309,479		$	19.75		317,270		$	24.62
Granted		-			-		65,000			2.86
Exercised		-			-		-			-
Expired		(134,731	)		12.07		-			-
Canceled or forfeited		(14,000	)		31.31		(72,791	)		25.90
Stock options outstanding at end of period		160,748		$	25.18		309,479		$	19.75
Stock options exercisable at end of period		115,333		$	33.81		226,980		$	25.57

Summary of Fair Value of Stock Options Granted to Employees and Directors

The fair value of stock options granted to employees and directors was estimated at the grant date using the Black-Scholes option pricing model using the following assumptions:

	Years ended December 31,
	2014	2013
Expected volatility	N/A	84% - 111%
Risk-free interest rate	N/A	1.40% - 2.63%
Expected life (years)	N/A	2.7 - 7.8
Dividend yield	N/A	N/A

Summary of Status of Non-Vested Restricted Shares

The following table summarizes RSU activity for the years ending December 31, 2014 and 2013:

	2014					2013
	Number of restricted stock units			Weighted-Average Grant Date Fair Value		Number of restricted stock units		Weighted-Average Grant Date Fair Value
Unvested RSUs at beginning of period		280,000		$	3.31		-	$	-
Granted		431,941			2.61		280,000		3.31
Forfeited		(29,778	)		3.38		-		-
Vested		(137,353	)		2.95		-		-
Unvested RSUs at end of period		544,810		$	2.84		280,000	$	3.31

Summary of Restricted Stock Awards

The following table summarizes RSA activity during the years ended December 31, 2014 and 2013:

	2014					2013
	Number of RSAs			Weighted-Average Grant Date Fair Value		Number of RSAs			Weighted-Average Grant Date Fair Value
Unvested RSAs at beginning of period		54,151		$	5.49		40,870		$	9.10
Granted		-			-		50,000			2.73
Forfeited		(5,601	)		5.39		(4,220	)		12.74
Vested		(21,880	)		5.85		(32,499	)		4.85
Unvested RSAs at end of period		26,670		$	5.21		54,151		$	5.49