Fair Value Measurements (Tables)

3 Months Ended

Apr. 30, 2016

Fair Value Disclosures [Abstract]

Schedule of available for sale securities measured on a recurring basis (in thousands)

			Fair Value Measurements
As of April 30, 2016:			Using Inputs Considered as
	Fair Value		Level 1		Level 2		Level 3
Short-term investments:
Corporate bonds		1,001		—		1,001		—
Total assets	$	1,001	$	—	$	1,001	$	—

			Fair Value Measurements
As of January 30, 2016:			Using Inputs Considered as
	Fair Value		Level 1		Level 2		Level 3
Short-term investments:
Corporate bonds		2,810		—		2,810		—
Municipal bonds		205		—		205		—
Total assets	$	3,015	$	—	$	3,015	$	—

Schedule of assets measured at fair value on a non-recurring basis (in thousands)

	Thirteen Weeks Ended		Fiscal Year Ended
Long-Lived Assets Held and Used (in thousands):	April 30, 2016		January 30, 2016
Carrying value	$	168	$	356
Fair value measured using Level 3 inputs	$	0	$	75
Impairment charge	$	168	$	281

Schedule of unobservable inputs

	Range
Unobservable Inputs	Fiscal 2016	Fiscal 2015
Weighted Average Cost of Capital (WACC)	15%	15%
Annual sales growth	0% to 11.4%	0% to 3.5%