Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Income Taxes
Income tax expense	$ 48,000	$ 12,000	$ 106,000	$ 575,000
Income tax rate, percentage	40.70%	6.80%	36.40%	49.60%
Decrease in effective tax rate as result of tax benefit of disqualifying disposition of stock options			6.30%
Unrecognized tax benefits	458,000		458,000		458,000
Unrecognized tax benefits, if recognized, that would affect the effective income tax rates of future periods	$ 458,000		$ 458,000