Stockholders' Equity (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended		60 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2011	Dec. 31, 2007
Stockholders' Equity [Abstract]
Weighted average diluted shares outstanding excludes shares of common stock subject to stock options	324,002	592,038	332,391	758,546
Shares authorized to repurchase of Common Stock						1,000,000
Shares repurchased, shares					535,135
Average price per share					$ 18.64
Shares repurchased, value					$ 10.0