Cash, Cash Equivalents and Investments (Tables)

3 Months Ended

Feb. 28, 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 February 28, 2015 is as follows (in thousands):

	Amortized Cost Basis		Unrealized Gains		Unrealized Losses		Fair Value
Cash	$	144,157	$	—	$	—	$	144,157
Money market funds	42,878		—		—		42,878
State and municipal bond obligations	24,045		84		—		24,129
Total	$	211,080	$	84	$	—	$	211,164

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):

	February 28, 2015				November 30, 2014
	Cash and Equivalents		Short-Term Investments		Cash and Equivalents		Short-Term Investments
Cash	$	144,157	$	—	$	195,189	$	—
Money market funds	42,878		—		67,893		—
State and municipal bond obligations	—		24,129		—		20,186
Total	$	187,035	$	24,129	$	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):

	February 28, 2015		November 30, 2014
Due in one year or less	$	10,994	$	11,140
Due after one year (1)	13,135		9,046
Total	$	24,129	$	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.