Debt (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Debt Instrument
Current Portion of Long-Term Debt	$ (2,042)	$ (4,166)
Long-Term Debt	30,281	32,289
Committed lines of credit	125,000
Uncommitted lines of credit	87,640
Letters of credit, Outstanding amount	2,014
Bank guarantees	498
Commitment fees on unused lines of credit	318
Indebtedness to EBITDA ratio	0.43 to 1
EBITDA to interest expense ratio	32.96 to 1
Aggregate maturities of outstanding debt including capital lease obligations
2013	3,101
2014	3,221
2015	4,241
2016	14,002
2017	3,792
Thereafter	8,203
Total minimum obligations	36,560
Less: amount representing interest	(4,237)
Total	32,323	36,455
Bank borrownings
Aggregate maturities of outstanding debt including capital lease obligations
Total	22	49
Credit facility borrowings
Aggregate maturities of outstanding debt including capital lease obligations
Total	30,000	30,000
Notes Payable
Aggregate maturities of outstanding debt including capital lease obligations
Total	750	1,500
Collateralized borrowings
Aggregate maturities of outstanding debt including capital lease obligations
Total	39	127
Capital lease obligations
Aggregate maturities of outstanding debt including capital lease obligations
Total	$ 1,512	$ 4,779

The interest portion included in debt and capital lease obligations.

No definition available.

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Lines of credit that legally bind the lender to provide the funds, rather than giving the lender the option of canceling the credit line based on market conditions.

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No definition available.

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The EBITDA to interest expense ratio as of the Balance Sheet date.

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No definition available.

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The indebtedness to EBITDA ratio as of the Balance Sheet date.

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No definition available.

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Lines of credit that do not legally bind the borrower to take out a loan at a particular time.

+ References

No definition available.

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- Definition

Total minimum obligation of debt and capital lease obligations including interest.

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No definition available.

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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Interpretation (FIN)

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-Paragraph 13

-Subparagraph b

-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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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section H

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Obligation related to long-term debt (excluding convertible debt) and capital leases, the portion which is due in one year or less in the future.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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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 long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

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