Long-Term Debt (Schedule of Long-term Debt Instruments) (Details) (USD $)	0 Months Ended
	Jan. 05, 2012
Line of Credit [Member]
Debt Instrument [Line Items]
New five year term loan facility	$ 240,000,000
Length of term loan facility	5 years
LIBOR plus basis spread, basis spread	1.75%
Variable rate basis	LIBOR
All-in interest rate	2.66%
Term of interest rate swaps	4 years
Revolving credit facility, amount outstanding	0
Accordion Feature [Member]
Debt Instrument [Line Items]
New facility, additional borrowing capacity	$ 110,000,000