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Summary of Restructuring Accrual Activity (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013
Schedule Of Accrual Activity [Line Items]
December 31, 2012	$ 933,732
Q1 2013 Charges to Operations
Cash Proceeds, Disbursements	(630,804)
Write Offs and Abandonments
Foreign Exchange Impact	7,650
Restructuring Accrual - March 31, 2013	310,578
Employee Severance And Related Benefits
Schedule Of Accrual Activity [Line Items]
December 31, 2012	801,453
Q1 2013 Charges to Operations
Cash Proceeds, Disbursements	(587,662)
Write Offs and Abandonments
Foreign Exchange Impact	7,931
Restructuring Accrual - March 31, 2013	221,722
Activity Termination and Facility Closure Costs
Schedule Of Accrual Activity [Line Items]
December 31, 2012	132,279
Q1 2013 Charges to Operations
Cash Proceeds, Disbursements	(43,142)
Write Offs and Abandonments
Foreign Exchange Impact	(281)
Restructuring Accrual - March 31, 2013	$ 88,856

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 95-3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Number 146

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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Net total Increase or Decrease in the accrual for restructuring costs during the reporting period.

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-Name Statement of Financial Accounting Standard (FAS)

-Number 146

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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Amount of foreign currency translation adjustment increasing or decreasing the accrual for a specified type of restructuring cost.

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-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 146

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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