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Summary of Business and Significant Accounting Policies (Tables) | 12 Months Ended
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Jan. 31, 2019
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:
|  | 2019 |  | 2018
Finished goods |  | $ | 15,908 |  |  | $ | 13,054 |
Work In Process |  | 18,820 |  |  | 16,627 |
Raw materials |  | 12,561 |  |  | 12,376 |
Inventories, net |  | $ | 47,289 |  |  | $ | 42,057 |
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 improvements | shorter of lease or useful life
Asset retirement obligations related to leased manufacturing facilities |
| January 31,
| 2019 |  | 2018
Balance at beginning of period | $ | 170,000 |  |  | $ | 590,000 |
Decrease in obligation | — |  |  | (425,000 | )
Accretion expense | 9,000 |  |  | 5,000 |
Balance at end of period | $ | 179,000 |  |  | $ | 170,000 |
Computation of basic and diluted loss per share | The following table sets forth the computation of basic and diluted loss per share:
|  | January 31,
In thousands, except per share data |  | 2019 |  | 2018
Numerator |  |  |  |
Net loss |  | $ | (1,614 | ) |  | $ | (3,209 | )
Denominator |  |  |  |
Weighted-average shares — basic |  | 15,421 |  |  | 15,244 |
Dilutive effect of common stock equivalents from equity incentive plans |  | — |  |  | — |
Weighted-average shares — diluted (a) |  | 15,421 |  |  | 15,244 |
Net loss per common share |  |  |  |
Basic |  | $ | (0.10 | ) |  | $ | (0.21 | )
Diluted |  | (0.10 | ) |  | (0.21 | )
(a) For fiscal year 2019 and 2018, approximately 149,000 and 147,000 shares of common stock equivalents were excluded in the computation of diluted net income 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, 2019 and 2018:
|  | January 31,
(in thousands) |  | 2019 |  | 2018
Balance as of beginning of year |  | $ | (9,259 | ) |  | $ | (11,394 | )
Other comprehensive (loss) income before reclassifications |  | (1,116 | ) |  | 1,180 |
Amounts reclassified from AOCI |  | 1,333 |  |  | 955 |
Net current period other comprehensive income |  | 217 |  |  | 2,135 |
Balance as of end of year |  | $ | (9,042 | ) |  | $ | (9,259 | )
The reclassifications out of accumulated other comprehensive (loss) income of $1,333,000 and $955,000 for the years ended January 31, 2019 and 2018, respectively, related to amortization of actuarial losses and settlements.

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