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Summary of Business and Significant Accounting Policies (Tables)
12 Months Ended
Jan. 31, 2021
Accounting Policies [Abstract]  
Schedule of Inventory, Net The following table presents an updated breakdown of the Company’s net inventory (in thousands) as of January 31:
20212020
 Finished goods$15,606 $15,401 
 Work in Process11,907 15,957 
 Raw materials10,757 11,971 
 Inventories, net$38,270 $43,329 
Depreciation and amortization computed on the straight-line method for financial reporting purposes based upon estimated useful lives
Property, plant and equipment are stated at cost, less accumulated depreciation. Depreciation and amortization are computed on the straight-line method for financial reporting purposes based upon the following estimated useful lives:
Land improvements
5 to 25 years
Buildings and building improvements
5 to 40 years
Machinery and equipment
3 to 10 years
Leasehold improvementsshorter of lease or useful life
Asset retirement obligations related to leased manufacturing facilities
 January 31,
 20212020
Balance at beginning of period$186,000 $179,000 
Decrease in obligation— — 
Accretion expense6,000 7,000 
Balance at end of period$192,000 $186,000 
Computation of basic and diluted loss per share The following table sets forth the computation of basic and diluted loss per share:
January 31,
20212020
(In thousands, except per share)
Numerator
(Loss) income
$(2,232)$2,382 
Denominator
Weighted-average shares — basic15,759 15,590 
Dilutive effect of common stock equivalents from equity incentive plans— 104 
Weighted-average shares — diluted (a)$15,759 $15,694 
Net (loss) income per common share
Basic$(0.14)$0.15 
Diluted(0.14)0.15 
(a) For fiscal year 2021, approximately 52,000 shares of common stock equivalents were excluded in the computation of diluted net loss per share, as the effect would be anti-dilutive since the Company reported a net loss.
Schedule of Accumulated Other Comprehensive Income (Loss)
The following table summarizes the changes in accumulated balances of other comprehensive (loss) income for the years
ended January 31, 2021 and 2020:

January 31,
(in thousands)20212020
Balance as of beginning of year$(14,311)$(9,042)
Other comprehensive loss before reclassifications(1,105)(6,045)
Amounts reclassified from AOCI1,831 776 
Net current period other comprehensive income (loss)726 (5,269)
Balance as of end of year$(13,585)$(14,311)