Basis of Presentation (Narrative) (Details) (Unsecured Debt [Member], Line of Credit Facility [Member])	0 Months Ended
	Jul. 02, 2013	Sep. 09, 2011
Unsecured Debt [Member] | Line of Credit Facility [Member]
Subsequent event, description	On July 2, 2013, the Company entered into an amendment to its credit agreement for its unsecured revolving credit facility and an amendment to the corresponding guaranty. The amendments extended the maturity date of the credit facility to July 2, 2018, and reduced the facility fee and interest rate margins on borrowings.
Credit agreement amendment date	Jul. 02, 2013	Sep. 09, 2011
Line of credit facility expiration date	Jul. 02, 2018	Sep. 09, 2016