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Segment Reporting - Net Income by Segment (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
May. 02, 2015 USD ($) | Jan. 31, 2015 USD ($) | Nov. 01, 2014 USD ($) | Aug. 02, 2014 USD ($) | Apr. 26, 2014 USD ($) | Jan. 25, 2014 USD ($) | Oct. 26, 2013 USD ($) | Jul. 27, 2013 USD ($) | May. 02, 2015 USD ($) segment | Apr. 26, 2014 USD ($) | Apr. 27, 2013 USD ($)
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |
Number of business units | segment |  |  |  |  |  |  |  |  | 5 |  |
Net sales | $ 158,086 | $ 118,123 | $ 173,115 | $ 166,618 | $ 136,240 | $ 115,369 | $ 161,639 | $ 138,722 | $ 615,942 | $ 551,970 | $ 518,322
Contribution margin |  |  |  |  |  |  |  |  | 86,616 | 87,916 | 81,135
Non-allocated operating expenses: |  |  |  |  |  |  |  |  |  |  |
General and administrative |  |  |  |  |  |  |  |  | 30,679 | 27,984 | 27,404
Product design and development |  |  |  |  |  |  |  |  | 24,652 | 23,375 | 23,131
Operating income |  |  |  |  |  |  |  |  | 31,285 | 36,557 | 30,600
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  | 1,119 | 1,294 | 1,523
Interest expense |  |  |  |  |  |  |  |  | (223) | (255) | (355)
Other (expense) income, net |  |  |  |  |  |  |  |  | (498) | (355) | (839)
Income before income taxes |  |  |  |  |  |  |  |  | 31,683 | 37,241 | 30,929
Income tax expense |  |  |  |  |  |  |  |  | 10,801 | 15,035 | 8,150
Net income | $ 3,839 | $ 561 | $ 7,737 | $ 8,745 | $ 1,826 | $ 2,871 | $ 11,790 | $ 5,719 | 20,882 | 22,206 | 22,779
Depreciation and amortization |  |  |  |  |  |  |  |  | 14,968 | 14,501 | 15,607
Commerical |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 165,793 | 154,754 | 144,596
Contribution margin |  |  |  |  |  |  |  |  | 28,541 | 30,313 | 24,241
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 4,846 | 4,243 | 4,940
Live Events |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 231,877 | 197,246 | 158,562
Contribution margin |  |  |  |  |  |  |  |  | 27,334 | 30,503 | 19,071
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 4,610 | 4,461 | 4,473
High School Park and Recreation [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 67,657 | 59,531 | 66,128
Contribution margin |  |  |  |  |  |  |  |  | 11,125 | 5,474 | 8,150
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,836 | 2,053 | 2,233
Transportation |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 48,333 | 54,861 | 73,270
Contribution margin |  |  |  |  |  |  |  |  | 10,404 | 12,810 | 21,330
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,148 | 1,132 | 1,375
International |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 102,282 | 85,578 | 75,766
Contribution margin |  |  |  |  |  |  |  |  | 9,212 | 8,816 | 8,343
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,053 | 873 | 717
Unallocated corporate depreciation |  |  |  |  |  |  |  |  |  |  |
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | $ 1,475 | $ 1,739 | $ 1,869

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