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Contingent Liabilities - Additional Information (Detail) $ in Millions	Dec. 31, 2015 USD ($)
Standby Letters of Credit [Member]
Line of Credit Facility [Line Items]
Loss contingency, range of possible loss, portion not accrued	$ 8.2
Bank Guaranties [Member]
Line of Credit Facility [Line Items]
Loss contingency, range of possible loss, portion not accrued	3.0
Surety Bonds [Member]
Line of Credit Facility [Line Items]
Loss contingency, range of possible loss, portion not accrued	$ 2.4

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

+ Details

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Period Type:	instant

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- Details

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- Details

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- Details

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Namespace Prefix:
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Balance Type:
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