Stock Based Compensation - Narrative (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Stock Options And Restricted Stock Units	Mar. 31, 2012 Stock Options And Restricted Stock Units	Mar. 31, 2014 Stock Options	Mar. 31, 2013 Stock Options	Mar. 31, 2014 Restricted Stock Units	Mar. 31, 2013 Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of authorized stock for stock incentive plan	348,232
Share based compensation options contractual term					10 years
Stock incentive plan vesting period, years					3 years		3 years
Stock-based compensation expense	$ 107,000	$ 112,000			$ 16,000	$ 17,000	$ 91,000	$ 95,000
Proceeds from exercise of stock options			0	48,000
Shares withheld for stock option exercises and related income taxes			$ 0	$ 54,000
Options, Grants in Period	0
Equity Instruments Other than Options, Grants in Period							0