Commitments and Contingencies (Tables)

12 Months Ended

Nov. 30, 2012

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

The changes in our warranty liability are as follows (in thousands):

	Years Ended November 30,
	2012			2011			2010
Balance at beginning of year	$	67,693		$	93,988		$	135,749
Warranties issued	8,416			4,852			5,173
Payments	(19,866		)	(25,024		)	(44,973		)
Adjustments	(8,421		)	(6,123		)	(1,961		)
Balance at end of year	$	47,822		$	67,693		$	93,988

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

The future minimum rental payments under operating leases, which primarily consist of office leases having initial or remaining noncancelable lease terms in excess of one year, are as follows (in thousands):

Years Ending November 30,
2013	$	5,873
2014	5,338
2015	2,728
2016	289
2017	—
Thereafter	—
Total minimum lease payments	$	14,228