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Segment Disclosure - Net Income by Segment (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 31, 2015 USD ($) | Nov. 01, 2014 USD ($) | Oct. 31, 2015 USD ($) segment | Nov. 01, 2014 USD ($)
Segment Reporting Information |  |  |  |
Number of business units | segment |  |  | 5 |
Net sales | $ 157,668 | $ 173,115 | $ 307,889 | $ 339,733
Contribution margin | 20,688 | 26,212 | 41,925 | 54,569
Depreciation and amortization |  |  |  |
Depreciation and amortization | 4,201 | 3,785 | 8,256 | 7,501
Non-allocated operating expenses: |  |  |  |
General and administrative | 8,116 | 7,820 | 16,286 | 15,757
Product design and development | 6,975 | 6,150 | 13,943 | 12,953
Operating income | 5,597 | 12,242 | 11,696 | 25,859
Nonoperating income (expense): |  |  |  |
Interest income | 266 | 275 | 564 | 575
Interest expense | (28) | (56) | (90) | (124)
Other (expense) income, net | (231) | (225) | (674) | (397)
Income before income taxes | 5,604 | 12,236 | 11,496 | 25,913
Income tax expense | 2,436 | 4,499 | 4,552 | 9,431
Net income | 3,168 | 7,737 | 6,944 | 16,482
Commerical |  |  |  |
Segment Reporting Information |  |  |  |
Net sales | 40,066 | 43,928 | 83,276 | 83,710
Contribution margin | 3,993 | 9,208 | 10,106 | 16,120
Depreciation and amortization |  |  |  |
Depreciation and amortization | 1,134 | 1,218 | 2,391 | 2,425
Live Events |  |  |  |
Segment Reporting Information |  |  |  |
Net sales | 50,761 | 62,641 | 98,683 | 138,315
Contribution margin | 6,802 | 6,510 | 12,985 | 18,557
Depreciation and amortization |  |  |  |
Depreciation and amortization | 1,097 | 1,168 | 2,418 | 2,315
High School Park and Recreation [Member] |  |  |  |
Segment Reporting Information |  |  |  |
Net sales | 24,253 | 24,243 | 43,212 | 44,354
Contribution margin | 3,785 | 4,431 | 7,560 | 9,589
Depreciation and amortization |  |  |  |
Depreciation and amortization | 368 | 468 | 858 | 921
Transportation |  |  |  |
Segment Reporting Information |  |  |  |
Net sales | 13,294 | 12,015 | 27,061 | 25,328
Contribution margin | 3,183 | 2,429 | 6,363 | 5,710
Depreciation and amortization |  |  |  |
Depreciation and amortization | 339 | 278 | 668 | 543
International |  |  |  |
Segment Reporting Information |  |  |  |
Net sales | 29,294 | 30,288 | 55,657 | 48,026
Contribution margin | 2,925 | 3,634 | 4,911 | 4,593
Depreciation and amortization |  |  |  |
Depreciation and amortization | 342 | 305 | 598 | 555
Unallocated |  |  |  |
Depreciation and amortization |  |  |  |
Depreciation and amortization | $ 921 | $ 348 | $ 1,323 | $ 742

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