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Segment Disclosure - Net Income by Segment (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 27, 2018 USD ($) | Jul. 28, 2018 USD ($) | Oct. 28, 2017 USD ($) | Jul. 29, 2017 USD ($) | Oct. 27, 2018 USD ($) segment | Oct. 28, 2017 USD ($)
Segment Reporting Information |  |  |  |  |  |
Number of business units | segment |  |  |  |  | 5 |
Net sales | $ 172,692 |  | $ 169,309 |  | $ 326,880 | $ 342,037
Gross profit | 42,757 |  | 42,604 |  | 81,004 | 87,250
Non-allocated operating expenses: |  |  |  |  |  |
General and administrative | 8,574 |  | 8,868 |  | 17,111 | 17,803
Product design and development | 9,039 |  | 8,948 |  | 18,331 | 17,995
Operating income | 9,019 |  | 9,438 |  | 13,059 | 21,163
Nonoperating income (expense): |  |  |  |  |  |
Interest income | 188 |  | 151 |  | 385 | 362
Interest expense | (2) |  | (47) |  | (41) | (133)
Other (expense) income, net | (66) |  | (87) |  | (220) | 58
Income before income taxes | 9,139 |  | 9,455 |  | 13,183 | 21,450
Income tax expense | 533 |  | 2,323 |  | 3 | 5,889
Net income | 8,606 | $ 4,574 | 7,132 | $ 8,429 | 13,180 | 15,561
Operating Segments |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |
Net sales | 172,692 |  | 169,309 |  | 326,880 | 342,037
Gross profit | 42,757 |  | 42,604 |  | 81,004 | 87,250
Contribution Margin | 26,632 |  | 27,254 |  | 48,501 | 56,961
Depreciation and amortization |  |  |  |  |  |
Depreciation, amortization, and impairment | 4,812 |  | 4,442 |  | 9,300 | 8,902
Operating Segments | Commerical |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |
Net sales | 46,069 |  | 34,377 |  | 76,638 | 67,240
Gross profit | 11,757 |  | 5,271 |  | 18,651 | 13,539
Contribution Margin | 7,050 |  | 602 |  | 9,524 | 4,176
Depreciation and amortization |  |  |  |  |  |
Depreciation, amortization, and impairment | 1,236 |  | 1,544 |  | 2,414 | 3,078
Operating Segments | Live Events |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |
Net sales | 55,099 |  | 68,653 |  | 104,571 | 146,265
Gross profit | 12,312 |  | 16,255 |  | 22,545 | 33,309
Contribution Margin | 8,918 |  | 12,854 |  | 15,903 | 26,590
Depreciation and amortization |  |  |  |  |  |
Depreciation, amortization, and impairment | 1,334 |  | 1,196 |  | 2,506 | 2,434
Operating Segments | High School Park and Recreation |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |
Net sales | 31,580 |  | 29,660 |  | 59,700 | 58,139
Gross profit | 9,759 |  | 10,553 |  | 19,261 | 20,904
Contribution Margin | 6,706 |  | 7,810 |  | 13,258 | 15,557
Depreciation and amortization |  |  |  |  |  |
Depreciation, amortization, and impairment | 517 |  | 422 |  | 960 | 844
Operating Segments | Transportation |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |
Net sales | 18,077 |  | 16,476 |  | 35,234 | 35,388
Gross profit | 6,140 |  | 6,181 |  | 11,591 | 13,126
Contribution Margin | 4,991 |  | 5,079 |  | 9,286 | 10,987
Depreciation and amortization |  |  |  |  |  |
Depreciation, amortization, and impairment | 277 |  | 285 |  | 551 | 579
Operating Segments | International |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |
Net sales | 21,867 |  | 20,143 |  | 50,737 | 35,005
Gross profit | 2,789 |  | 4,344 |  | 8,956 | 6,372
Contribution Margin | (1,033) |  | 909 |  | 530 | (349)
Depreciation and amortization |  |  |  |  |  |
Depreciation, amortization, and impairment | 723 |  | 270 |  | 1,423 | 551
Operating Segments | Unallocated |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |
Depreciation, amortization, and impairment | $ 725 |  | $ 725 |  | $ 1,446 | $ 1,416

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