Fair Value Measurements Fair Value Measurements (Detail 1) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Sep. 01, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Groupings
Business Combination, Contingent Consideration, Liability	$ 30,900	$ 30,700
ASSETS
Cash Equivalents, at Carrying Value	5,616		$ 21,513
Fair Value, Measurements, Recurring
ASSETS
Foreign currency forward contracts not designated as hedging instrument	1,912		791
Assets, Fair Value Disclosure	7,528		22,304
Liabilities [Abstract]
Interest Rate Derivative Liabilities, at Fair Value	1,292		3,630
Foreign currency forward contracts not designated as hedging instrument	986		2,123
Derivative Liability, Fair Value, Gross Liability	2,384		5,753
Fair Value, Measurements, Recurring \| Level 1
ASSETS
Cash Equivalents, at Carrying Value	0		0
Foreign currency forward contracts not designated as hedging instrument	0		0
Assets, Fair Value Disclosure	0		0
Liabilities [Abstract]
Interest Rate Derivative Liabilities, at Fair Value	0		0
Foreign currency forward contracts not designated as hedging instrument	0		0
Derivative Liability, Fair Value, Gross Liability	0		0
Fair Value, Measurements, Recurring \| Level 2
ASSETS
Cash Equivalents, at Carrying Value	5,616		21,513
Foreign currency forward contracts not designated as hedging instrument	1,912		791
Assets, Fair Value Disclosure	7,528		22,304
Liabilities [Abstract]
Interest Rate Derivative Liabilities, at Fair Value	1,292		3,630
Foreign currency forward contracts not designated as hedging instrument	986		2,123
Derivative Liability, Fair Value, Gross Liability	2,384		5,753
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3 [Member]
ASSETS
Cash Equivalents, at Carrying Value	0		0
Foreign currency forward contracts not designated as hedging instrument	0		0
Assets, Fair Value Disclosure	0		0
Liabilities [Abstract]
Interest Rate Derivative Liabilities, at Fair Value	0		0
Foreign currency forward contracts not designated as hedging instrument	0		0
Derivative Liability, Fair Value, Gross Liability	$ 0		$ 0

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of liability recognized arising from contingent consideration in a business combination.

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Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fair value as of the balance sheet date of all foreign currency derivative assets not designated as hedging instruments.

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Fair value as of the balance sheet date of all foreign currency derivative liabilities not designated as hedging instruments.

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Fair value as of the balance sheet date of all interest rate derivatives designated as cash flow hedging instruments.

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