Fair Value Measurements (Tables)

6 Months Ended

Jul. 31, 2017

Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following tables present the fair value hierarchy for those assets and liabilities measured at fair value on a recurring basis (in thousands) as of July 31, 2017 and 2016 and January 31, 2017:

		Fair Value at July 31, 2017
	Balance Sheet Location	Level 1		Level 2		Level 3		Total
Assets:
Available-for-sale securities	Other current assets	$	313	$	—	$	—	$	313
Short-term investment	Other current assets		161		—		—		161
SERP assets - employer	Other non-current assets		1,394		—		—		1,394
SERP assets - employee	Other non-current assets		34,007		—		—		34,007
Hedge derivatives	Other current assets		—		402		—		402
Total		$	35,875	$	402	$	—	$	36,277
Liabilities:
SERP liabilities - employee	Other non-current liabilities	$	34,007	$	—	$	—	$	34,007
Hedge derivatives	Accrued liabilities		—		489		—		489
Total		$	34,007	$	489	$	—	$	34,496

		Fair Value at January 31, 2017
	Balance Sheet Location	Level 1		Level 2		Level 3		Total
Assets:
Available-for-sale securities	Other current assets	$	309	$	—	$	—	$	309
Short-term investment	Other current assets		154		—		—		154
SERP assets - employer	Other non-current assets		1,091		—		—		1,091
SERP assets - employee	Other non-current assets		30,831		—		—		30,831
Hedge derivatives	Other current assets		—		145		—		145
Total		$	32,385	$	145	$	—	$	32,530
Liabilities:
SERP liabilities - employee	Other non-current liabilities	$	30,831	$	—	$	—	$	30,831
Hedge derivatives	Accrued liabilities		—		211		—		211
Total		$	30,831	$	211	$	—	$	31,042

		Fair Value at July 31, 2016
	Balance Sheet Location	Level 1		Level 2		Level 3		Total
Assets:
Available-for-sale securities	Other current assets	$	271	$	—	$	—	$	271
Short-term investment	Other current assets		154		—		—		154
SERP assets - employer	Other non-current assets		1,364		—		—		1,364
SERP assets - employee	Other non-current assets		28,469		—		—		28,469
Hedge derivatives	Other current assets		—		549		—		549
Total		$	30,258	$	549	$	—	$	30,807
Liabilities:
SERP liabilities - employee	Other non-current liabilities	$	28,469	$	—	$	—	$	28,469
Hedge derivatives	Accrued liabilities		—		92		—		92
Total		$	28,469	$	92	$	—	$	28,561