Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2012

Stockholders' Equity [Abstract]

Weighted-average fair value of options granted and assumptions

The following table sets forth information about the weighted-average fair value of options granted, and the weighted-average assumptions for such options granted, during 2011 and 2010:

	2011			2010
Weighted average fair value of options on grant date	$	4.87		$	6.84
Expected life (years)		6.0			6.0
Risk-free interest rate		2.3	%		2.5	%
Expected dividend yield		—	%		—	%
Expected volatility		76.2	%		71.1	%

Summary of option activity for stock options

The following table sets forth the summary of option activity for the year ended December 31, 2012:

	Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value
Outstanding at January 1, 2012		796,500		$	12.20
Granted		—		$	—		—	$	—
Exercised		(39,000	)	$	7.81			$	245
Expired		(10,000	)	$	19.95
Forfeited		—		$	—
Outstanding at December 31, 2012		747,500		$	12.32		5.92	$	3,931
Exercisable on December 31, 2012		595,827		$	13.34		5.43	$	2,918
Expected to vest at December 31, 2012		144,089		$	8.33		8.13	$	1,013

Summary of activity for restricted stock grants

The following table sets forth the summary of activity for restricted stock grants for the year ended December 31, 2012:

	2012					2011					2010
	Shares			Weighted Average Grant Date Fair Value		Shares			Weighted Average Grant Date Fair Value		Shares			Weighted Average Grant Date Fair Value
Nonvested at beginning of year		248,804		$	8.43		131,333		$	10.58		179,500		$	19.56
Granted		288,648		$	12.18		165,638		$	7.22		134,500		$	11.20
Vested		(72,471	)	$	7.81		(43,167	)	$	10.47		(141,667	)	$	22.29
Forfeited		(6,000	)	$	10.91		(5,000	)	$	7.34		(41,000	)	$	11.46
Nonvested at end of year		458,981		$	10.85		248,804		$	8.43		131,333		$	10.58