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Business and Basis of Presentation (Tables) | 12 Months Ended
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Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Property, Plant and Equipment | Property, plant and equipment are stated at cost and are depreciated using the straight-line method based on the following estimated useful lives:
| Years
Building | 15 - 40
Machinery | 3 - 15
Computer equipment and software | 3 - 5
Furniture and fixtures | 7 - 10
Leasehold improvements | *
*Leasehold improvements are amortized over the lesser of the lease term or the estimated useful life of the related asset. Property, plant and equipment, net consist of the following:
| March 31,
(In thousands) | 2018 |  | 2017
Components of Property, Plant and Equipment |  |  |
Land | $ | 550 |  |  | $ | 550 |
Building | 13,746 |  |  | 13,156 |
Machinery | 38,599 |  |  | 31,456 |
Computer equipment | 18,116 |  |  | 15,440 |
Furniture and fixtures | 2,924 |  |  | 2,720 |
Leasehold improvements | 8,804 |  |  | 7,497 |
| 82,739 |  |  | 70,819 |
Accumulated depreciation | (30,187 | ) |  | (20,224 | )
Property, plant and equipment, net | $ | 52,552 |  |  | $ | 50,595 |
Computation of Basic and Diluted Earnings Per Share | The following table sets forth the computation of basic and diluted earnings per share:
| Year Ended March 31,
(In thousands, except per share data) | 2018 |  | 2017 |  | 2016
Numerator |  |  |  |  |
Net income | $ | 339,570 |  |  | $ | 69,395 |  |  | $ | 99,907 |
Denominator |  |  |  |  |  |  |
Denominator for basic earnings per share - weighted average shares outstanding | 53,099 |  |  | 52,976 |  |  | 52,754 |
Dilutive effect of unvested restricted stock units and options issued to employees and directors | 427 |  |  | 386 |  |  | 389 |
Denominator for diluted earnings per share | 53,526 |  |  | 53,362 |  |  | 53,143 |
Earnings per Common Share: |  |  |  |  |  |  |
Basic net earnings per share | $ | 6.40 |  |  | $ | 1.31 |  |  | $ | 1.89 |
Diluted net earnings per share | $ | 6.34 |  |  | $ | 1.30 |  |  | $ | 1.88 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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