Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Income Taxes
Income tax expense	$ 427,000	$ 196,000	$ 533,000	$ 771,000
Income tax rate, percentage	50.20%	35.60%	46.70%	45.10%
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