Stock Incentive Plan (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of authorized stock for stock incentive plan	348,232		348,232
Share based compensation options contractual term			10 years
Stock incentive plan vesting period, years			3 years
Stock option expense	$ 37,000	$ 15,000	$ 71,000	$ 44,000
Proceeds from exercise of stock options	47,000	117,000	165,000	275,000
Shares withheld for stock option exercises and related income taxes	46,000	129,000	170,000	290,000
Options granted during the period	0
Restricted stock units granted during the period	0
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock incentive plan vesting period, years			3 years
Stock option expense	$ 127,000	$ 99,000	$ 320,000	$ 295,000