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Summary of Business and Significant Accounting Policies (Tables) | 12 Months Ended
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Jan. 31, 2017
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, 2017 and 2016:
|  | January 31,
|  | 2017 |  | 2016
Finished goods |  | 11,174 |  |  | 10,233 |
WIP |  | 13,486 |  |  | 13,443 |
Raw materials |  | 11,029 |  |  | 10,927 |
Inventories, net |  | 35,689 |  |  | 34,603 |
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,
| 2017 |  | 2016
Balance at beginning of period | $ | 581,000 |  |  | $ | 572,000 |
Decrease in obligation | — |  |  | — |
Accretion expense | 9,000 |  |  | 9,000 |
Balance at end of period | $ | 590,000 |  |  | $ | 581,000 |
Computation of basic and diluted loss per share | The following table sets forth the computation of basic and diluted income per share:
In thousands, except per share data | 2017 |  | 2016 |  | 2015
Numerator |  |  |  |  |
Net income | $ | 22,760 |  |  | $ | 4,549 |  |  | $ | 849 |
Denominator |  |  |  |  |
Weighted-average shares — basic | 15,067 |  |  | 14,914 |  |  | 14,756 |
Dilutive effect of equity incentive plans | 199 |  |  | 204 |  |  | 231 |
Weighted-average shares — diluted | 15,266 |  |  | 15,118 |  |  | 14,987 |
Net income per common share |  |  |  |  |
Basic | $ | 1.51 |  |  | $ | 0.31 |  |  | $ | 0.06 |
Diluted | 1.49 |  |  | 0.30 |  |  | 0.06 |
Schedule of Accumulated Other Comprehensive Income (Loss) | The following table summarizes the changes in accumulated balances of other comprehensive income (loss) for the year ended January 31, 2017 and 2016:
| January 31,
(in thousands) | 2017 |  | 2016
Balance as of beginning of year | $ | (14,330 | ) |  | $ | (20,234 | )
Other comprehensive income before reclassifications | 1,608 |  |  | 3,891 |
Amounts reclassified from AOCI | 1,328 |  |  | 2,013 |
Net current period other comprehensive income | 2,936 |  |  | 5,904 |
Balance as of end of year | $ | (11,394 | ) |  | $ | (14,330 | )
The reclassifications out of accumulated other comprehensive income (loss) of $1,328,000 and $2,013,000 for the years ended January 31, 2017 and 2016, respectively, related to amortization of actuarial losses.

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