Auction Rate Securities (Tables)

9 Months Ended

Jul. 31, 2012

Significant Assumptions Used to Determine Fair Value of Auction Rate Securities

The following table presents the significant assumptions used to determine the fair value of the Company’s auction rate securities at July 31, 2012 and October 31, 2011:

Assumptions	July 31, 2012	October 31, 2011
Discount rates	L + 2.34% - L + 10.52%	L + 3.21% - L + 17.50%
Yields	2.15%, L + 2.00 % - L + 3.50%	L + 2.00% - L + 3.50%
Average expected lives	4 - 10 years	4 - 10 years

Changes in Cost Basis and Fair Value of Auction Rate Securities

The following table presents the changes in the cost basis and fair value of the Company’s auction rate securities for the nine months ended July 31, 2012:

				Fair Value
(in thousands)	Cost Basis			(Level 3)
Balance at beginning of year	$	18,307		$	15,670
Unrealized gains included in accumulated other comprehensive loss		—			2,477
Unrealized losses included in accumulated other comprehensive loss		—			(1,443	)
Other-than-temporary credit losses recognized in earnings		(313	)		—
Balance at July 31, 2012	$	17,994		$	16,704