Note 3 - Fair Values of Assets and Liabilities (Tables)

3 Months Ended

Apr. 30, 2016

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	April 30, 2016
	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Corporate bonds	$	7,040	$	7,040	$	-	$	-
Fixed income mutual funds		1,302		1,302		-		-
Money market funds		109		109		-		-
Total cash equivalents and marketable securities		8,451		8,451		-		-
Restricted cash		823		823		-		-
Total assets measured at fair value	$	9,274	$	9,274	$	-	$	-

	January 30, 2016
	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Corporate bonds	$	7,045	$	7,045	$	-	$	-
Fixed income mutual funds		1,287		1,287		-		-
Money market funds		88		88		-		-
Total cash equivalents and marketable securities		8,420		8,420		-		-
Restricted cash		900		900		-		-
Total assets measured at fair value	$	9,320	$	9,320	$	-	$	-