Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2011
Equity, Class of Treasury Stock [Line Items]
Maximum number of common shares authorized to be repurchased (in shares)			100,000
Total number of shares authorized and available for repurchase (in shares)	540,000
Number of shares repurchased (in shares)	79,664
Repurchased common stock, value	$ 572	$ 572
Dividend Warrants Received Per Share Of Common Stock	5
Number Of Warrants To Purchase One Share Common Stock	25
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 7.50
Minimum Volume Weighted Average Exercise Price To Exercise Warrants	$ 15.00
Additional shares sold through exercise by underwriter of over-allotment option (in shares)	0