GOODWILL AND OTHER INTANGIBLE ASSETS - Gross Amount and Amortization (Details) - USD ($)
|
9 Months Ended |
12 Months Ended |
Sep. 30, 2016 |
Dec. 30, 2016 |
Jan. 01, 2016 |
Jan. 02, 2015 |
| Goodwill and other intangible assets |
|
|
|
|
| Gross Amount |
|
$ 9,036,000
|
$ 2,716,000
|
|
| Accumulated Amortization |
|
3,095,000
|
1,171,000
|
|
| Amortization expense for acquired identifiable intangible assets |
|
1,900,000
|
1,200,000
|
$ 0
|
| Decreased other receivables |
$ 300,000
|
|
|
|
| Estimated amortization expense for acquired identifiable intangible assets |
|
|
|
|
| 2017 |
|
2,120,000
|
|
|
| 2018 |
|
1,951,000
|
|
|
| 2019 |
|
1,087,000
|
|
|
| 2020 |
|
674,000
|
|
|
| 2021 |
|
109,000
|
|
|
| Total estimated amortization expense |
|
5,941,000
|
|
|
| Goodwill impairment |
|
|
|
|
| Goodwill impairment |
|
0
|
0
|
$ 0
|
| Backlog |
|
|
|
|
| Goodwill and other intangible assets |
|
|
|
|
| Gross Amount |
|
1,398,000
|
348,000
|
|
| Accumulated Amortization |
|
$ 639,000
|
340,000
|
|
| Amortization Period (in years) |
|
5 years
|
|
|
| Tradename |
|
|
|
|
| Goodwill and other intangible assets |
|
|
|
|
| Gross Amount |
|
$ 2,739,000
|
1,049,000
|
|
| Accumulated Amortization |
|
$ 1,142,000
|
329,000
|
|
| Tradename | Minimum |
|
|
|
|
| Goodwill and other intangible assets |
|
|
|
|
| Amortization Period (in years) |
|
2 years 6 months
|
|
|
| Tradename | Maximum |
|
|
|
|
| Goodwill and other intangible assets |
|
|
|
|
| Amortization Period (in years) |
|
3 years 6 months
|
|
|
| Non-compete agreements |
|
|
|
|
| Goodwill and other intangible assets |
|
|
|
|
| Gross Amount |
|
$ 1,331,000
|
1,011,000
|
|
| Accumulated Amortization |
|
$ 463,000
|
194,000
|
|
| Non-compete agreements | Minimum |
|
|
|
|
| Goodwill and other intangible assets |
|
|
|
|
| Amortization Period (in years) |
|
4 years
|
|
|
| Non-compete agreements | Maximum |
|
|
|
|
| Goodwill and other intangible assets |
|
|
|
|
| Amortization Period (in years) |
|
5 years
|
|
|
| License to bid |
|
|
|
|
| Goodwill and other intangible assets |
|
|
|
|
| Gross Amount |
|
$ 308,000
|
308,000
|
|
| Accumulated Amortization |
|
308,000
|
$ 308,000
|
|
| Customer relationships |
|
|
|
|
| Goodwill and other intangible assets |
|
|
|
|
| Gross Amount |
|
3,260,000
|
|
|
| Accumulated Amortization |
|
$ 543,000
|
|
|
| Amortization Period (in years) |
|
5 years
|
|
|