Cash, Cash Equivalents and Investments (Tables)

6 Months Ended

May. 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 May 31, 2015 is as follows (in thousands):

	Amortized Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash	$	144,175	$	—	$	—		$	144,175
Money market funds	21,845		—		—			21,845
State and municipal bond obligations	33,050		63		(12		)	33,101
Total	$	199,070	$	63	$	(12	)	$	199,121

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):

	May 31, 2015				November 30, 2014
	Cash and Equivalents		Short-Term Investments		Cash and Equivalents		Short-Term Investments
Cash	$	144,175	$	—	$	195,189	$	—
Money market funds	21,845		—		67,893		—
State and municipal bond obligations	—		33,101		—		20,186
Total	$	166,020	$	33,101	$	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):

	May 31, 2015		November 30, 2014
Due in one year or less	$	10,384	$	11,140
Due after one year (1)	22,717		9,046
Total	$	33,101	$	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.