Schedule of Balance Sheet classifications

12 Months Ended

Jan. 31, 2020

Balance Sheet Related Disclosures [Abstract]

Components of Balance Sheet Information

Following are the components of selected balance sheet items:

	As of January 31,
	2020		2019
Accounts receivable, net:
Trade accounts	$	56,978	$	53,820
Unbilled receivables	6,954		1,391
Allowance for doubtful accounts	(1,380)		(739)
	$	62,552	$	54,472
Inventories, net:
Finished goods	$	6,309	$	7,629
In process	3,287		1,103
Materials	44,303		45,344
	$	53,899	$	54,076
Other current assets:
Insurance policy benefit	$	38	$	336
Federal income tax receivable	1,370		1,045
Receivable from sale of investment	—		1,055
Prepaid expenses and other	4,028		6,300
	$	5,436	$	8,736
Property, plant and equipment, net(a):
Land	$	3,117	$	3,234
Buildings and improvements	80,330		81,381
Machinery and equipment	158,354		155,463
Financing lease right-of-use assets	881		—
Accumulated depreciation	(141,832)		(133,724)
	100,850		106,354
Property, plant and equipment subject to capital leases:
Machinery and equipment	—		510
Accumulated amortization for capitalized leases	—		(249)
	$	100,850	$	106,615
Other assets:
Equity investments	$	1,289	$	345
Operating lease right-of-use assets	4,275		—
Deferred income taxes	16		16
Other	1,507		2,963
	$	7,087	$	3,324
Accrued liabilities:
Salaries and related	$	4,188	$	8,244
Benefits	5,339		4,751
Insurance obligations	1,680		1,963
Warranties	2,019		890
Income taxes	293		328
Other taxes	1,734		2,434
Acquisition-related contingent consideration	763		1,796
Lease liability	2,530		—
Other	2,197		3,072
	$	20,743	$	23,478
Other liabilities:
Postretirement benefits	$	8,741	$	7,678
Acquisition-related contingent consideration	2,171		2,376
Lease liability	2,627		—
Deferred income taxes	7,080		1,659
Uncertain tax positions	2,606		2,670
Other	5,936		3,852
	$	29,161	$	18,235

^(a) Includes assets held for use and assets held for sale. The amount of assets held for sale as of January 31, 2020, and January 31, 2019, were not material