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Segment Reporting - Net Income by Segment (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 29, 2017 USD ($) | Jan. 28, 2017 USD ($) | Oct. 29, 2016 USD ($) | Jul. 30, 2016 USD ($) | Apr. 30, 2016 USD ($) | Jan. 30, 2016 USD ($) | Oct. 31, 2015 USD ($) | Aug. 01, 2015 USD ($) | Apr. 29, 2017 USD ($) segment | Apr. 30, 2016 USD ($) | May 02, 2015 USD ($)
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |
Number of business units | segment |  |  |  |  |  |  |  |  | 5 |  |
Net sales | $ 143,682 | $ 115,719 | $ 169,992 | $ 157,146 | $ 138,463 | $ 123,816 | $ 157,668 | $ 150,221 | $ 586,539 | $ 570,168 | $ 615,942
Contribution margin |  |  |  |  |  |  |  |  | 78,728 | 62,207 | 86,616
Non-allocated operating expenses: |  |  |  |  |  |  |  |  |  |  |
General and administrative |  |  |  |  |  |  |  |  | 34,226 | 32,801 | 30,679
Product design and development |  |  |  |  |  |  |  |  | 29,081 | 26,911 | 24,652
Operating income |  |  |  |  |  |  |  |  | 15,421 | 2,495 | 31,285
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  | 751 | 987 | 1,119
Interest expense |  |  |  |  |  |  |  |  | (230) | (228) | (223)
Other (expense) income, net |  |  |  |  |  |  |  |  | (354) | (128) | (498)
Income before income taxes |  |  |  |  |  |  |  |  | 15,588 | 3,126 | 31,683
Income tax expense |  |  |  |  |  |  |  |  | 5,246 | 1,065 | 10,801
Net income | $ 909 | $ (5,127) | $ 9,021 | $ 5,539 | $ (2,930) | $ (1,953) | $ 3,168 | $ 3,776 | 10,342 | 2,061 | 20,882
Depreciation, amortization, and impairment |  |  |  |  |  |  |  |  | 19,392 | 16,943 | 15,136
Commerical |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 148,073 | 148,261 | 165,793
Contribution margin |  |  |  |  |  |  |  |  | 18,046 | 13,210 | 28,541
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Depreciation, amortization, and impairment |  |  |  |  |  |  |  |  | 6,337 | 4,925 | 4,846
Live Events |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 213,982 | 205,151 | 231,877
Contribution margin |  |  |  |  |  |  |  |  | 27,750 | 23,178 | 27,334
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Depreciation, amortization, and impairment |  |  |  |  |  |  |  |  | 5,032 | 4,970 | 4,610
High School Park and Recreation |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 82,798 | 70,035 | 67,657
Contribution margin |  |  |  |  |  |  |  |  | 16,114 | 10,314 | 11,125
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Depreciation, amortization, and impairment |  |  |  |  |  |  |  |  | 1,725 | 1,722 | 1,836
Transportation |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 52,426 | 52,249 | 48,333
Contribution margin |  |  |  |  |  |  |  |  | 13,465 | 12,466 | 10,404
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Depreciation, amortization, and impairment |  |  |  |  |  |  |  |  | 1,267 | 1,364 | 1,148
International |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 89,260 | 94,472 | 102,282
Contribution margin |  |  |  |  |  |  |  |  | 3,353 | 3,039 | 9,212
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Depreciation, amortization, and impairment |  |  |  |  |  |  |  |  | 2,317 | 1,227 | 1,053
Unallocated corporate depreciation |  |  |  |  |  |  |  |  |  |  |
Nonoperating income (expense): |  |  |  |  |  |  |  |  |  |  |
Depreciation, amortization, and impairment |  |  |  |  |  |  |  |  | $ 2,714 | $ 2,735 | $ 1,643

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