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GNU Interest (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Dec. 18, 2018 | Dec. 29, 2018 | Dec. 30, 2017
Sale of GNU interest |  |  |
Purchase price received |  |  | $ 250
GNU gain on sale of business assets |  | $ 258 | 250
Disposal Group, Disposed of by Sale, Not Discontinued Operations | GNU |  |  |
Sale of GNU interest |  |  |
Purchase price received |  |  | 300
GNU |  |  |
GNU Interest |  |  |
Percentage of ownership interest held by the entity | 55.89% |  |
GNU | Disposal Group, Disposed of by Sale, Not Discontinued Operations | GNU |  |  |
Sale of GNU interest |  |  |
GNU gain on sale of business assets |  | $ 300 |
GNU partial distribution gain received on sale of business assets |  |  | 600
CRA | Disposal Group, Disposed of by Sale, Not Discontinued Operations | GNU |  |  |
Sale of GNU interest |  |  |
GNU gain on sale of business assets |  |  | $ 200

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