Allowance for Doubtful Accounts Receivable and Sales Returns (Activity in Allowance for Doubtful Accounts Receivable and Sales Returns) (Detail) $ in Thousands	9 Months Ended
Sep. 30, 2017 USD ($)
Allowance for Doubtful Accounts Receivable
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning Balance	$ 633
Addition (reduction) to allowance	(19)
Amounts written off	0
Foreign currency translation	73
Ending Balance	687
Allowance for Sales Returns
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning Balance	169
Addition (reduction) to allowance	13
Amounts written off	(11)
Foreign currency translation	(1)
Ending Balance	$ 170

Valuation Allowances and Currency Translation

No definition available.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

+ Details

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- Definition

Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses.

+ References

+ Details

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- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

+ References

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- Details

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- Details

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