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Acquisition, Restructuring and Other Items, net (Details 1) - USD ($) $ in Thousands | 12 Months Ended | 16 Months Ended
--- | --- | ---
May 31, 2018 | May 31, 2017 | May 31, 2016 | May 31, 2018
Restructuring Cost and Reserve [Line Items] |  |  |  |
Acquisition, restructuring and other items, net | $ 15,432 | $ 27,510 | $ 12,591 |
Restructuring charges | 4,674 | 1,348 |  |
Restructuring reserve | 1,071 | 962 | 0 | $ 1,071
Accrued Expenses |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring reserve | 1,100 |  |  | 1,100
Manchester, GA and Denmead, UK into Glens Falls and Queensbury, NY |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 4,700 | 1,300 |  | $ 6,000
Legal |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Acquisition, restructuring and other items, net | $ 10,067 | 19,480 | $ 7,487 |
Legal | DOJ Litigation |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Acquisition, restructuring and other items, net |  | $ 12,500 |  |

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