Schedule of Share-based Compensation Activity (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award
Share-based compensation expense	$ 13,000
Intrinsic value of exercisable options that are out-of-the-money	0
Restricted Stock Activity [Roll Forward]
Unvested at December 31, 2011	175,639
Granted	48,186	54,915	110,260
Vested	(52,596)
Forfeited	(50,492)
Unvested at December 31, 2012	120,737	175,639
Unvested at December 31, 2011	$ 4.97
Granted	$ 5.96
Vested	$ 6.18
Forfeited	$ 5.21
Unvested at December 31, 2012	$ 4.72	$ 4.97
Stock Options Activity [Roll Forward]
Outstanding at December 31, 2011	515,995
Granted	20,000
Exercised	0
Forfeited	(56,000)
Expired unexercised	(72,200)
Outstanding at December 31, 2012	407,795	515,995
Outstanding at December 31, 2011	$ 14.01
Granted	$ 4.40
Exercised	$ 0
Forfeited	$ 13.91
Expired unexercised	$ 13.76
Outstanding at December 31, 2012	$ 13.59	$ 14.01
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award
Share-based compensation expense	160,000	306,000	222,000
Intrinsic value of unvested restricted stock awards	187,000
Unamortized cost of restricted stock awards in additional paid-in capital	570,000
Weighted-average period in years of restricted stock award cost amortization	2.7
Stock options
Share-based Compensation Arrangement by Share-based Payment Award
Share-based compensation expense	12,000	0	0
Low exercise price	$ 4.40
High exercise price	$ 14.76
Weighted-average remaining contractual term of stock options outstanding	1.7
Number of vested stock options that are out-of-the-money	387,595
Number of unvested stock options that are in-the-money	20,000
Intrinsic value of unvested in-the-money stock options	$ 37,400
2003 Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award
Shares of common stock available from the 2003 Stock Option Plan and authorized for future grant in the 2008 Omnibus Equity Incentive Plan	64,500
2008 Omnibus Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award
Shares of common sock authorized under the 2008 Omnibus Equity Incentive Plan	270,000
Shares of common stock available for grant under the 2008 Omnibus Equity Incentive Plan	209,751