Defined Benefit Pension Plan and Postretirement Benefits - Additional Information (Detail)	12 Months Ended
Dec. 31, 2015 USD ($)
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Company's maximum expected cash contributions to the Pension Plans in the next fiscal year	$ 0
Maximum expected actuarial gain to be recognize as a component of periodic benefit cost next fiscal year	$ 100,000
Percentage of employer's contribution based on participants contribution	50.00%
Maximum [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Percentage of employer's contribution based on participants compensation	2.00%

The actuarial gain expected to be recognized as a component of the periodic benefit cost during the next fiscal year.

No definition available.

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- Definition

Pension Plans, Postretirement and Other Employee Benefits [Line Items]

+ References

No definition available.

+ Details

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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

+ Details

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

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