Subsequent Events (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 26, 2011
Subsequent event
Units owned of Fenway Sports Group after sale	310
Units sold in Fenway Sports Group	390
Units owned of Fenway Sports Group before sale	700
Fenway Sports Group [Member]
Subsequent event
Subsequent Event, Date	Jul. 01, 2011
Notes Due 2015 Called 2011 [Member]
Subsequent event
Interest rate on debt	14.053%
Notes Due 2015 Called 2011 [Member]
Subsequent event
Subsequent Event, Date	Jul. 11, 2011
Proceeds From Partial Sale of Fenway Sports Group [Member]
Subsequent event
Subsequent Event, Amount	$ 117,000
Pre Tax Gain on Partial Sale of Fenway Sports Group [Member]
Subsequent event
Subsequent Event, Amount	64,000
Principal Amount of Notes Due 2015 Called 2011 [Member]
Subsequent event
Subsequent Event, Amount	250,000
Prepayment Amount of Notes Due 2015 Called 2011 [Member]
Subsequent event
Subsequent Event, Amount	279,000
Accrued and Unpaid Interest on Notes Due 2015 Called 2011 [Member]
Subsequent event
Subsequent Event, Amount	3,000
Make Whole Premium For Prepayment of Notes Due 2015 Called 2011 [Member]
Subsequent event
Subsequent Event, Amount	26,000
Total Estimated Charge For Prepayment of Notes Due 2015 Called 2011 [Member]
Subsequent event
Subsequent Event, Amount	$ 46,000
Interest In Fenway Sports Group After Partial Sale [Member]
Subsequent event
Equity Method Investment, Ownership Percentage	7.30%