Auction Rate Securities (Tables)

6 Months Ended

Apr. 30, 2013

Significant Assumptions Used to Determine Fair Value of Auction Rate Securities

The following table presents the significant assumptions used to determine the fair values of the Company’s auction rate securities at April 30, 2013 and October 31, 2012:

Assumption	April 30, 2013	October 31, 2012
Discount rates	L + 0.44% - L + 3.43%	L + 1.37% - L + 6.86%
Yields	2.15%, L + 2.00%	2.15%, 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 tables present the changes in the cost basis and fair values of the Company’s auction rate securities as of April 30, 2013 and October 31, 2012:

(in thousands)	Cost Basis			Fair Value (Level 3)
Balance at November 1, 2012	$	17,994		$	17,780
Unrealized gains included in accumulated other comprehensive loss		—			214
Redemption of security by issuer		(5,000	)		(5,000	)
Balance at April 30, 2013	$	12,994		$	12,994

(in thousands)	Cost Basis			Fair Value (Level 3)
Balance at November 1, 2011	$	18,307		$	15,670
Unrealized gains included in accumulated other comprehensive loss		—			2,110
Other-than-temporary credit loss recognized in earnings		(313	)		—
Balance at October 31, 2012	$	17,994		$	17,780