Stockholders' Equity (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Sep. 30, 2001
Common Stock Repurchase Authorized
Stock Repurchase Shares Authorized	3,200,000	3,200,000	15,400,000
Treasury Stock, Shares, Acquired	0	0