Benefit Plans, Share-based Compensation Stock Option by Exercise Price Range (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
401(k) Plan [Abstract]
Maximum percentage of compensation employees may defer (in hundredths)	50.00%
Total matching contribution	$ 153	$ 157
Employer maximum contribution to plan (in hundredths)	2.00%
Safe harbor non-elective contribution (in hundredths)	3.00%
Safe harbor non-elective contribution	$ 302	$ 280
$1.51 to $2.00 [Member]
Data on options outstanding and exercisable [Abstract]
Range of exercise prices, minimum (in dollars per share)	$ 1.51
Range of exercise prices, maximum (in dollars per share)	$ 2.00
Number of options (in shares)	77,000
Outstanding and exercisable, weighted average remaining life	4 months 2 days
Outstanding and exercisable, weighted average exercise price (in dollars per share)	$ 1.59