Employee Stock Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2013

Employee Stock Benefit Plans [Abstract]

Stock option activity under share-based compensation plans

Stock option activity under all of the Company's share-based compensation plans for the three months ended March 31, 2013 was as follows:

	Number of Options			Weighted Average Exercise Price
Outstanding, January 1, 2013		898,541		$	16.65
Granted		259,625			16.59
Exercised		(3,333	)		6.24
Cancelled		(9,166	)		26.11
Outstanding, March 31, 2013		1,145,667		$	16.59
Options exercisable at March 31, 2013		325,042		$	17.71

Weighted average assumptions used to estimate fair value of stock options

The Company uses the Black-Scholes option-pricing model to estimate fair value of grants of stock options with the following weighted-average assumptions:

	Three Months Ended March 31, 2013
Risk-free interest rate		1.26	%
Volatility		85.25	%
Expected dividend yield		0	%
Expected life	5.5 years
Estimated forfeiture rate		0	%