Benefit Plans (Details 5) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Summary of activity in the Plans
Outstanding at beginning of year	1,991,532
Shares, Granted	10,898
Shares, Exercised	31,000
Shares, Forfeited	(661,488)
Outstanding at end of period	1,309,942
Options exercisable at end of period	1,281,334
Weighted average exercise price, Outstanding at beginning of year	$ 6.63
Weighted average exercise price, Granted	$ 2.12
Weighted average exercise price, Exercised	$ 1.91
Weighted average exercise price, Forfeited	$ 8.48
Weighted average exercise price, Outstanding at end of period	$ 5.77
Weighted average exercise price, Options exercisable at the end of period	$ 5.86
Aggregate intrinsic value, Outstanding at end of period	$ 640
Aggregate intrinsic value, Options exercisable at the end of period	$ 602