SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Estimated Useful Lives (Details) |
12 Months Ended |
|---|---|
Dec. 30, 2016 | |
| Equipment | Minimum | |
| Equipment and Leasehold Improvements | |
| Estimated useful life | 2 years |
| Equipment | Maximum | |
| Equipment and Leasehold Improvements | |
| Estimated useful life | 5 years |
| Furniture and fixtures | |
| Equipment and Leasehold Improvements | |
| Estimated useful life | 5 years |
| Computer hardware | |
| Equipment and Leasehold Improvements | |
| Estimated useful life | 2 years |
| Computer software | |
| Equipment and Leasehold Improvements | |
| Estimated useful life | 3 years |
| Automobiles and trucks | |
| Equipment and Leasehold Improvements | |
| Estimated useful life | 3 years |
| Field equipment | |
| Equipment and Leasehold Improvements | |
| Estimated useful life | 5 years |