Share-Based Compensation

9 Months Ended

Sep. 30, 2013

Share-based Compensation [Abstract]

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

Share-Based Compensation

Valuation Assumptions for Stock Options

For the nine month period ended September 30, 2013, there were no stock options granted. There were 10 stock options granted in the nine month period ended September 30, 2012. The fair value of each option was estimated on the date of grant for the granted options using the Black-Scholes option-pricing model with the following assumptions:

	Nine Months Ended
	September 30,
	2012
Expected life (years)	5.0
Expected volatility	86.1		%
Expected dividend yield	—		%
Risk-free interest rate	0.8		%
Weighted average fair value per option	$	5.77

As of September 30, 2013 and December 31, 2012, there was $1,277 and $1,813 of total unrecognized compensation cost related to stock options granted under the Company’s stock plans, respectively. That cost is expected to be recognized over a weighted average period of 3.3 years and 4.0 years for the respective periods.

Restricted Stock Unit Activity

A summary of the Company’s nonvested restricted stock unit activity with respect to the nine months ended September 30, 2013 is as follows:

	Number of Shares		Weighted Average Grant Date Fair Value
Nonvested at December 31, 2012	1,380		$	8.37
Granted	327		$	12.40
Vested	(468	)	$	7.75
Forfeited	(54	)	$	9.50
Nonvested at September 30, 2013	1,185		$	9.68

As of September 30, 2013 and December 31, 2012, there was $7,179 and $5,906 of total unrecognized compensation cost related to restricted stock units granted under the Company’s stock plans, respectively.  That cost is expected to be recognized over a weighted average period of 2.3 years and 2.0 years for the respective periods.