v3.8.0.1

Restructuring Charges - Accrued Liability Rollforward (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 31, 2017 | Oct. 31, 2016 | Oct. 31, 2017 | Oct. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |  |
Balance at April 30, 2016 |  |  | $ 1,407 | $ 1,043
Restructuring charges | $ 16 | $ 767 | 56 | 1,094
Payments |  |  | (1,191) | (1,766)
Non-cash settlements of restructuring charges |  |  | (46) |
Balance at October 31, 2017 | 226 | 371 | 226 | 371
Employee Severance [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Balance at April 30, 2016 |  |  | 1,108 | 497
Restructuring charges |  |  | 56 | 459
Payments |  |  | (1,164) | (929)
Non-cash settlements of restructuring charges |  |  | 0 |
Balance at October 31, 2017 | 0 | 27 | 0 | 27
Other Restructuring [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Balance at April 30, 2016 |  |  | 299 | 546
Restructuring charges |  |  | 0 | 635
Payments |  |  | (27) | (837)
Non-cash settlements of restructuring charges |  |  | (46) |
Balance at October 31, 2017 | $ 226 | $ 344 | $ 226 | $ 344

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: 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(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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