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Property, Plant and Equipment (Tables) | 6 Months Ended
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Sep. 30, 2018
Property, Plant and Equipment [Abstract] |
Schedule of Costs and Accumulated Depreciation of Plant and Equipment | The cost and accumulated depreciation of property and equipment at September 30, 2018 and March 31, 2018 are as follows (in thousands):
| September 30, 2018 |  | March 31, 2018
Construction in progress - equipment | 597 |  |  | 654 |
Equipment and software | 45,797 |  |  | 72,760 |
Furniture and fixtures | 1,307 |  |  | 1,878 |
Leasehold improvements | 1,838 |  |  | 1,426 |
Property, plant and equipment, gross | 49,539 |  |  | 76,718 |
Less accumulated depreciation | (38,957 | ) |  | (64,205 | )
Property, plant and equipment, net | $ | 10,582 |  |  | $ | 12,513 |

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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://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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