Share Repurchase Plan (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Shares repurchased during the period	200,000	508,080
Total cost of shares repurchased during the period	$ 1,372,000	$ 3,923,000	$ 2,552,000
Average price paid per share for shares purchased during the period	$ 6.79	$ 7.72
Stock Repurchase Program, Remaining Authorized Repurchase Amount	7,200,000
Share repurchase program, amount authorized [Member]
Stock Repurchase Program, Authorized Amount	15,000,000
Share repurchase program, amount previously authorized [Member]
Stock Repurchase Program, Authorized Amount	10,000,000
Share repurchase program, increase in the authorized amount [Member]
Total cost of shares repurchased during the period	1,357,000	3,923,000
Share repurchase program, increase in the authorized amount [Member]
Stock Repurchase Program, Authorized Amount	$ 5,000,000