Stockholders' Equity (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended		60 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 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	335,875	901,300	336,295	841,800
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