Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Millions |
|
3 Months Ended |
12 Months Ended |
Apr. 02, 2015 |
Mar. 28, 2015 |
Dec. 27, 2014 |
Dec. 28, 2013 |
Dec. 29, 2012 |
Dec. 31, 2011 |
| Loss Contingencies [Line Items] |
|
|
|
|
|
|
| Amount funded for loss incurred by joint venture |
|
$ 8.8
|
$ 8.8
|
|
$ 4.0
|
$ 4.8
|
| Accrual recorded in other noncurrent liabilities |
|
4.3
|
4.3
|
$ 4.3
|
|
|
| Recognized losses on indemnification agreement |
|
|
|
|
$ 8.0
|
$ 1.9
|
| Unapproved change orders and claims |
|
3.9
|
3.9
|
3.2
|
|
|
| Unapproved change orders within costs in excess of billings |
|
0.5
|
0.5
|
0.5
|
|
|
| Unapproved change orders within other current assets |
|
2.2
|
2.2
|
2.7
|
|
|
| Unapproved change orders within accounts receivable |
|
$ 1.2
|
1.2
|
|
|
|
| Percentage of ownership interest in joint venture |
|
40.00%
|
|
|
|
|
| Loss from Catastrophes [Member] |
|
|
|
|
|
|
| Loss Contingencies [Line Items] |
|
|
|
|
|
|
| Charge for costs to remove the barge |
|
|
|
0.8
|
|
|
| Charges recognized for lost product included in accrued expenses |
|
|
$ 0.4
|
$ 0.9
|
|
|
| Maximum [Member] |
|
|
|
|
|
|
| Loss Contingencies [Line Items] |
|
|
|
|
|
|
| Duration of commitments |
|
1 year
|
1 year
|
|
|
|
| Subsequent Event [Member] |
|
|
|
|
|
|
| Loss Contingencies [Line Items] |
|
|
|
|
|
|
| Value of damages sought |
$ 29.4
|
|
|
|
|
|