Related Parties - Additional Information (Detail) - Builders FirstSource, Inc [Member] - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Jan. 02, 2016 |
Jan. 03, 2015 |
|
| Related Party Transaction [Line Items] | |||
| Total net sales to Builders FirstSource | $ 12.8 | $ 7.9 | $ 6.7 |
| Accounts receivable due from Builders FirstSource | $ 1.7 | $ 0.7 | |