Cash, Cash Equivalents and Investments (Tables)

9 Months Ended

Aug. 31, 2015

Investments and Cash [Abstract]

Summary of Cash, Cash Equivalents and Trading and Available-for-sale Investments

A summary of our cash, cash equivalents and available-for-sale investments at August 31, 2015 is as follows (in thousands):

	Amortized Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash	$	163,248	$	—	$	—		$	163,248
Money market funds	25,865		—		—			25,865
State and municipal bond obligations	29,157		52		(18		)	29,191
Total	$	218,270	$	52	$	(18	)	$	218,304

A summary of our cash, cash equivalents and available-for-sale investments at November 30, 2014 is as follows (in thousands):

	Amortized Cost Basis		Unrealized Gains		Unrealized Losses		Fair Value
Cash	$	195,189	$	—	$	—	$	195,189
Money market funds	67,893		—		—		67,893
State and municipal bond obligations	20,100		86		—		20,186
Total	$	283,182	$	86	$	—	$	283,268

Summary of Cash, Cash Equivalents and Trading and Available-for-sale Investments by Balance Sheet Classification

Such amounts are classified on our condensed consolidated balance sheets as follows (in thousands):

	August 31, 2015				November 30, 2014
	Cash and Equivalents		Short-Term Investments		Cash and Equivalents		Short-Term Investments
Cash	$	163,248	$	—	$	195,189	$	—
Money market funds	25,865		—		67,893		—
State and municipal bond obligations	—		29,191		—		20,186
Total	$	189,113	$	29,191	$	263,082	$	20,186

Fair Value of Debt Securities by Contractual Maturity

The fair value of debt securities by contractual maturity is as follows (in thousands):

	August 31, 2015		November 30, 2014
Due in one year or less	$	13,093	$	11,140
Due after one year (1)	16,098		9,046
Total	$	29,191	$	20,186

(1) Includes state and municipal bond obligations, which are securities representing investments available for current operations and are classified as current in the consolidated balance sheets.