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Pension Plans - Additional Information (Detail) - USD ($)		12 Months Ended
	Mar. 11, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Pension And Other Employee Benefit Plans [Line Items]
Prior service cost		$ 0
Pretax unfunded pension obligation gain		700,000
Decreased cost resulting from a .25% increase in the discount rate		$ 1,500,000
Expected long-term return on plan assets		8.00%	8.00%	8.00%
Contribution to pension plan		$ 0
Expense for contribution plan		$ 5,500,000	$ 6,100,000	$ 5,600,000
Weighted average of one year treasury bill		1.00%
Interest rate for the supplemental profit sharing plan		1.22%	1.12%
Expense for the supplemental profit sharing plan		$ 300,000	$ 500,000	$ 300,000
Supplemental profit sharing plan unfunded status		3,900,000	$ 3,500,000
Subsequent Event [Member]
Pension And Other Employee Benefit Plans [Line Items]
Estimated net loss for the PLP-USA pension plan	$ 500,000
Additional Loss on Industry Updates to Mortality Table [Member]
Pension And Other Employee Benefit Plans [Line Items]
Pretax unfunded pension obligation gain		$ 700,000

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- Definition

Defined benefit plan unfunded status of plan.

+ References

No definition available.

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- Definition

Pension And Other Employee Benefit Plans [Line Items]

+ References

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- Definition

Retirement and profit sharing plan expenses.

+ References

No definition available.

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- Definition

Supplemental profit sharing plan interest rate.

+ References

No definition available.

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- Definition

Supplemental profit sharing plan variable rate basis.

+ References

No definition available.

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- Definition

Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (obligation).

+ References

No definition available.

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- Definition

Amount before tax, after reclassification adjustments, of actuarial gain (loss) that has not been recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Expected Long-Term Rate of Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512046

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (m)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

+ References

No definition available.

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- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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