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Principles of Consolidation (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
May 03, 2017 | Apr. 13, 2016 | Jul. 01, 2017 | Jul. 02, 2016 | Sep. 30, 2017 | Oct. 01, 2016
Sale of GNU interest |  |  |  |  |  |
Purchase price received |  |  |  |  | $ 250 | $ 1,100
GNU gain on sale of business assets |  |  |  |  | $ 250 | $ 3,836
Disposal Group, Disposed of by Sale, Not Discontinued Operations | GNU |  |  |  |  |  |
Sale of GNU interest |  |  |  |  |  |
Purchase price receivable |  | $ 1,350 |  |  |  |
Purchase price received | $ 250 | $ 1,100 |  |  |  |
GNU | Disposal Group, Disposed of by Sale, Not Discontinued Operations | GNU |  |  |  |  |  |
Sale of GNU interest |  |  |  |  |  |
GNU gain on sale of business assets |  |  | $ 250 | $ 3,800 |  |
GNU |  |  |  |  |  |
GNU Interest |  |  |  |  |  |
Percentage of ownership interest held by the entity |  |  |  |  | 55.89% |
CRA | Disposal Group, Disposed of by Sale, Not Discontinued Operations | GNU |  |  |  |  |  |
Sale of GNU interest |  |  |  |  |  |
GNU gain on sale of business assets |  |  | $ 140 | $ 2,100 |  |

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