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Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended
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Oct. 31, 2017
Accumulated Other Comprehensive Loss [Abstract] |
Changes in Accumulated Other Comprehensive Loss by Component, Net of Tax | Changes in Accumulated Other Comprehensive Loss by component, net of tax, for the three and six months ended October 31, 2017 and 2016 were as follows (in thousands):
|  | Foreign |  |  | Unamortized |  |  | Interest |  |  |  |
|  | Currency |  |  | Retirement |  |  | Rate |  |  |  |
|  | Translation |  |  | Costs |  |  | Swaps |  |  | Total |
Balance at July 31, 2017 |  | $ | (291,807 | ) |  | $ | (192,449 | ) |  | $ | 2,066 |  |  | $ | (482,190 | )
Other comprehensive income (loss) before reclassifications |  |  | 5,636 |  |  |  | (1,673 | ) |  |  | 238 |  |  |  | 4,201 |
Amounts reclassified from accumulated other comprehensive loss |  |  | - |  |  |  | 1,094 |  |  |  | 169 |  |  |  | 1,263 |
Total other comprehensive income (loss) |  |  | 5,636 |  |  |  | (579 | ) |  |  | 407 |  |  |  | 5,464 |
Balance at October 31, 2017 |  | $ | (286,171 | ) |  | $ | (193,028 | ) |  | $ | 2,473 |  |  | $ | (476,726 | )
Balance at April 30, 2017 |  | $ | (319,212 | ) |  | $ | (190,502 | ) |  | $ | 2,427 |  |  | $ | (507,287 | )
Other comprehensive income (loss) before reclassifications |  |  | 33,041 |  |  |  | (4,690 | ) |  |  | (194 | ) |  |  | 28,157 |
Amounts reclassified from accumulated other comprehensive loss |  |  | - |  |  |  | 2,164 |  |  |  | 240 |  |  |  | 2,404 |
Total other comprehensive income (loss) |  |  | 33,041 |  |  |  | (2,526 | ) |  |  | 46 |  |  |  | 30,561 |
Balance at October 31, 2017 |  | $ | (286,171 | ) |  | $ | (193,028 | ) |  | $ | 2,473 |  |  | $ | (476,726 | )
|  | Foreign |  |  | Unamortized |  |  | Interest |  |  |  |
|  | Currency |  |  | Retirement |  |  | Rate |  |  |  |
|  | Translation |  |  | Costs |  |  | Swaps |  |  | Total |
Balance at July 31, 2016 |  | $ | (312,560 | ) |  | $ | (170,401 | ) |  | $ | (1,191 | ) |  | $ | (484,152 | )
Other comprehensive income (loss) before reclassifications |  |  | (25,824 | ) |  |  | 15,826 |  |  |  | 1,200 |  |  |  | (8,798 | )
Amounts reclassified from accumulated other comprehensive loss |  |  | - |  |  |  | 6,325 |  |  |  | (24 | ) |  |  | 6,301 |
Total other comprehensive income (loss) |  |  | (25,824 | ) |  |  | 22,151 |  |  |  | 1,176 |  |  |  | (2,497 | )
Balance at October 31, 2016 |  | $ | (338,384 | ) |  | $ | (148,250 | ) |  | $ | (15 | ) |  | $ | (486,649 | )
Balance at April 30, 2016 |  | $ | (267,920 | ) |  | $ | (179,405 | ) |  | $ | (361 | ) |  | $ | (447,686 | )
Other comprehensive income (loss) before reclassifications |  |  | (70,464 | ) |  |  | 25,494 |  |  |  | 97 |  |  |  | (44,873 | )
Amounts reclassified from accumulated other comprehensive loss |  |  | - |  |  |  | 5,661 |  |  |  | 249 |  |  |  | 5,910 |
Total other comprehensive income (loss) |  |  | (70,464 | ) |  |  | 31,155 |  |  |  | 346 |  |  |  | (38,963 | )
Balance at October 31, 2016 |  | $ | (338,384 | ) |  | $ | (148,250 | ) |  | $ | (15 | ) |  | $ | (486,649 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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