Fair Value Measurements (Tables)

12 Months Ended

Jan. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value of Financial Assets Measured on Recurring Basis

The following tables set forth our financial assets that were accounted for at fair value on a recurring basis. There were no fair value measurements of our financial assets using level 3 inputs for the periods presented:

			Fair Value at January 31, 2019 Using
	Total		Level 1		Level 2
	(Amounts in thousands)
Assets:
Cash equivalents	$	2,887	$	2,724	$	163
Marketable securities:
U.S. Treasury Notes and bonds		7,072		7,072		—
U.S. Agency bonds		992		—		992
Corporate bonds		2,295		—		2,295
Total	$	13,246	$	9,796	$	3,450

			Fair Value at January 31, 2018 Using
	Total		Level 1		Level 2
	(Amounts in thousands)
Assets:
Cash equivalents	$	4,568	$	—	$	4,568
Marketable securities:
U.S. Treasury Notes and bonds		3,717		3,717		—
U.S. Agency bonds		2,983		—		2,983
Corporate bonds		1,740		—		1,740
Total	$	13,008	$	3,717	$	9,291

Summary of Marketable Securities by Security Type

Marketable securities by security type consisted of the following:

	January 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(Amounts in thousands)
U.S. Treasury Notes and bonds	$	7,055	$	17	$	—		$	7,072
U.S. Agency bonds		1,001		—		(9	)		992
Corporate bonds		2,308		—		(13	)		2,295
	$	10,364	$	17	$	(22	)	$	10,359

	January 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(Amounts in thousands)
U.S. Treasury Notes and bonds	$	3,741	$	—	$	(24	)	$	3,717
U.S. Agency bonds		2,993		9		(19	)		2,983
Corporate Bonds		1,760		—		(20	)		1,740
	$	8,494	$	9	$	(63	)	$	8,440