Debt Outstanding Matures on Calendar Year Basis (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jul. 02, 2011
Debt Disclosure [Line Items]
Debt outstanding maturities Q2-Q4 2012	$ 831
Debt outstanding maturities 2013	201,226
Debt outstanding maturities 2014	1,186
Debt outstanding maturities 2015	1,169
Debt outstanding maturities 2016	221,387
Debt outstanding maturities 2017	301,170
Debt outstanding maturities Thereafter	508,240
Total debt	1,235,209	1,309,087	1,406,907
Contractual Maturity
Debt Disclosure [Line Items]
Debt outstanding maturities Q2-Q4 2012	246
Debt outstanding maturities 2013	200,057
Debt outstanding maturities 2014	17
Debt outstanding maturities 2016	220,218
Debt outstanding maturities 2017	300,000
Debt outstanding maturities Thereafter	500,000
Total debt	1,220,538
Capital Lease Obligations
Debt Disclosure [Line Items]
Debt outstanding maturities Q2-Q4 2012	585
Debt outstanding maturities 2013	1,169
Debt outstanding maturities 2014	1,169
Debt outstanding maturities 2015	1,169
Debt outstanding maturities 2016	1,169
Debt outstanding maturities 2017	1,170
Debt outstanding maturities Thereafter	8,240
Total debt	$ 14,671