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v3.19.2

Organization and Significant Accounting Policies - Revenue by Category (Details) | 3 Months Ended
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Jul. 27, 2019 USD ($) contract | Jul. 28, 2018 USD ($)
Disaggregation of revenue |  |
Number of active contracts | contract | 1 |
Contract Liability |  |
Disaggregation of revenue |  |
Revenue | $ 830,000 | $ 1,548,000
Domestic |  |
Disaggregation of revenue |  |
Revenue | 38,808,000 | 35,352,000
International |  |
Disaggregation of revenue |  |
Revenue | 48,103,000 | 42,691,000
U.S. government |  |
Disaggregation of revenue |  |
Revenue | 49,134,000 | 35,908,000
Non-U.S. government |  |
Disaggregation of revenue |  |
Revenue | 37,777,000 | 42,135,000
FFP |  |
Disaggregation of revenue |  |
Revenue | 67,944,000 | 58,003,000
CPFF |  |
Disaggregation of revenue |  |
Revenue | 18,264,000 | 19,983,000
T&M |  |
Disaggregation of revenue |  |
Revenue | 703,000 | 57,000
Small UAS |  |
Disaggregation of revenue |  |
Revenue | 66,745,000 | 41,216,000
TMS |  |
Disaggregation of revenue |  |
Revenue | 5,587,000 | 22,766,000
HAPS |  |
Disaggregation of revenue |  |
Revenue | 12,335,000 | 11,563,000
Other |  |
Disaggregation of revenue |  |
Revenue | $ 2,244,000 | $ 2,498,000

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