Quarterly report pursuant to Section 13 or 15(d)

Derivatives (Details)

v2.4.0.6
Derivatives (Details) (USD $)
0 Months Ended
Mar. 31, 2013
Interest rate swaps (Swaps)
Cash flow hedge
Mar. 25, 2013
1.884 % interest rate swaps
Mar. 25, 2013
1.384 % interest rate swaps
Derivatives      
Notional   $ 544,500,000 $ 144,275,000
Rate Paid (as a percent)   1.884% 1.384%
Variable interest rate base   3 mo.USD-LIBOR-BBA 3 mo.USD-LIBOR-BBA
Variable interest rate base floor   1.00% 1.00%
Amount in Accumulated OCL expected to recognize in interest expense in coming 12 months $ 4,861,000