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Debt (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Dec. 31, 2011
Short-term debt	$ 26,065		$ 39,181
Long-term debt:
Other Long-term debt	405		75
Long-term debt	218,883		227,957
Current portion of long-term debt	37,076		44,246
Long-term debt	181,807		183,711
Senior Notes [Member]
Long-term debt:
Long-term debt	173,274	[1]	172,271	[1]
Long-term Debt, Weighted Average Interest Rate	9.50%	[1]
Debt, Maturity	Oct - 2017	[1]
Pst Notes Payable [Member]
Short-term debt	29,570		38,296
Long-term debt:
Long-term debt	14,126		15,697
Debt Instrument Maturity Period Range Start	2013
Debt Instrument Maturity Period Range End	2019
Pst Notes Payable [Member] | Minimum [Member]
Long-term debt:
Short-term debt, Weighted Average Interest as of June 30, 2012	9.60%
Long-term Debt, Weighted Average Interest Rate	4.00%
Pst Notes Payable [Member] | Maximum [Member]
Long-term debt:
Short-term debt, Weighted Average Interest as of June 30, 2012	15.60%
Long-term Debt, Weighted Average Interest Rate	4.50%
Bcs Installment Note [Member]
Long-term debt:
Long-term debt	92		188
Long-term Debt, Weighted Average Interest Rate	5.50%
Debt, Maturity	Sept - 2012
Suzhou Long Term Note [Member]
Long-term debt:
Long-term debt	1,416		1,430
Long-term Debt, Weighted Average Interest Rate	8.33%
Debt, Maturity	Sept - 2012
Letter Of Credit [Member]
Short-term debt	25,000		38,000
Long-term debt:
Short-term debt, Weighted Average Interest as of June 30, 2012	1.70%
Debt, Maturity	within 1 year
Bcs Revolver [Member]
Short-term debt	$ 1,065		$ 1,181
Long-term debt:
Short-term debt, Weighted Average Interest as of June 30, 2012	5.25%
Debt, Maturity	Sept - 2012
Pst Term Loans [Member]
Long-term debt:
Debt, Maturity	Various 2012
Suzhou Short Term Note [Member]
Long-term debt:
Debt, Maturity	Sept - 2012
[1] Weighted average interest rate excludes the impact of the Company's interest rate swap and the accretion of debt discount.

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Latest period the outstanding debt instruments are required to be repaid.

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Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

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-Publisher SEC

-Name Regulation S-X (SX)

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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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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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