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Restructuring | 12 Months Ended
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Mar. 31, 2017
Restructuring and Related Activities [Abstract] |
Restructuring | Restructuring The Company accounts for charges resulting from operational restructuring actions in accordance with ASC Topic 420, Exit or Disposal Cost Obligations (“ASC 420”) and ASC Topic 712, Compensation—Nonretirement Postemployment Benefits (“ASC 712”). In accounting for these obligations, the Company is required to make assumptions related to the amounts of employee severance, benefits, and related costs and the time period over which leased facilities will remain vacant, sublease terms, sublease rates and discount rates. Estimates and assumptions are based on the best information available at the time the obligation arises. These estimates are reviewed and revised as facts and circumstances dictate; changes in these estimates could have a material effect on the amount accrued on the consolidated balance sheet. During the fiscal year ended March 31, 2015, the Company undertook restructuring activities, approved by the Board of Directors, in order to reorganize its global operations, streamline various functions of the business, and reduce its global workforce to better reflect the demand for its products. During the year ended March 31, 2015, the Company undertook a plan to consolidate its Grid manufacturing activities into its Devens, Massachusetts facility and close its facility in Middleton, Wisconsin which was completed during the year ended March 31, 2016. In addition, the Company established a new Wind manufacturing facility in Romania, and as a result, reduced the headcount in its operation in China. The Company is maintaining its headcount in China at a level necessary to support demand from its Chinese customers. There was no restructuring activity in the fiscal year ended March 31, 2017. The Company recorded restructuring charges for severance and other costs of approximately less than $0.1 million and $1.9 million during the fiscal years ended March 31, 2016 and 2015, respectively, primarily associated with the consolidation of the Company’s manufacturing activities in the United States and China. From April 1, 2011 through March 31, 2017, the Company’s various restructuring activities resulted in a substantial reduction of its global workforce. All amounts related to these restructuring activities have been paid as of March 31, 2017. The Company announced an additional restructuring plan on April 4, 2017 (see Note 19, "Subsequent Events" for further discussion). The following table presents restructuring charges and cash payments during the year ended March 31, 2016 (in thousands):
| Severance pay and benefits |  | Facility exit and Relocation costs |  | Total
Accrued restructuring balance at April 1, 2015 | $ | 180 |  |  | $ | — |  |  | $ | 180 |
Charges to operations | (5 | ) |  | 38 |  |  | 33 |
Cash payments | (175 | ) |  | (38 | ) |  | (213 | )
Accrued restructuring balance at March 31, 2016 | $ | — |  |  | $ | — |  |  | $ | — |
All restructuring charges discussed above are included within restructuring and impairments in the Company’s consolidated statements of operations. The Company includes accrued restructuring within accounts payable and accrued expenses in the consolidated balance sheets.

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- Definition The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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