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Segment Disclosure - Net Income by Segment (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 26, 2013 | Oct. 27, 2012 | Oct. 26, 2013 segment | Oct. 27, 2012
Segment Reporting Information |  |  |  |
Number of business units |  |  | 5 |
Net sales | $ 161,639 | $ 149,871 | $ 300,361 | $ 282,790
Contribution margin | 30,061 | 29,556 | 51,945 | 52,866
Depreciation and amortization |  |  |  |
Depreciation and amortization | 3,549 | 3,955 | 7,371 | 7,831
Non-allocated operating expenses: |  |  |  |
General and administrative | 6,804 | 6,850 | 14,103 | 13,431
Product design and development | 5,692 | 5,845 | 11,681 | 11,866
Operating income | 17,565 | 16,861 | 26,161 | 27,569
Nonoperating income (expense): |  |  |  |
Interest income | 312 | 348 | 655 | 779
Interest expense | (12) | (36) | (127) | (123)
Other income (expense), net | 278 | 150 | (114) | (30)
Income before income taxes | 18,143 | 17,323 | 26,575 | 28,195
Income tax expense | 6,353 | 5,776 | 9,066 | 9,970
Net income | 11,790 | 11,547 | 17,509 | 18,225
Commerical |  |  |  |
Segment Reporting Information |  |  |  |
Net sales | 44,973 | 39,773 | 78,674 | 78,130
Contribution margin | 10,179 | 8,566 | 16,123 | 14,768
Depreciation and amortization |  |  |  |
Depreciation and amortization | 1,065 | 1,213 | 2,117 | 2,493
Live Events |  |  |  |
Segment Reporting Information |  |  |  |
Net sales | 58,175 | 50,604 | 113,252 | 95,113
Contribution margin | 10,287 | 8,073 | 18,629 | 15,149
Depreciation and amortization |  |  |  |
Depreciation and amortization | 1,115 | 1,161 | 2,262 | 2,265
Schools & Theatres |  |  |  |
Segment Reporting Information |  |  |  |
Net sales | 18,823 | 21,688 | 36,740 | 39,861
Contribution margin | 2,355 | 3,434 | 5,503 | 6,011
Depreciation and amortization |  |  |  |
Depreciation and amortization | 529 | 562 | 1,075 | 1,138
Transportation |  |  |  |
Segment Reporting Information |  |  |  |
Net sales | 15,238 | 17,571 | 28,280 | 34,167
Contribution margin | 4,760 | 6,025 | 6,905 | 12,004
Depreciation and amortization |  |  |  |
Depreciation and amortization | 278 | 345 | 564 | 669
International |  |  |  |
Segment Reporting Information |  |  |  |
Net sales | 24,430 | 20,235 | 43,415 | 35,519
Contribution margin | 2,480 | 3,458 | 4,785 | 4,934
Depreciation and amortization |  |  |  |
Depreciation and amortization | 183 | 222 | 419 | 359
Unallocated |  |  |  |
Depreciation and amortization |  |  |  |
Depreciation and amortization | $ 379 | $ 452 | $ 934 | $ 907

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