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Financial Instruments	3 Months Ended
	Mar. 31, 2013
Financial Instruments [Abstract]
Financial Instruments	(9) Financial Instruments The carrying amount of notes receivable from related parties with a fixed rate of interest of 6.0% was $2.6 million as of March 31, 2013, compared with a fair value of $2.8 million based on current market interest rates. The carrying amount of notes receivable from related parties was $2.7 million as of December 31, 2012, compared with a fair value of $2.9 million. The carrying amount of long term debt, including the current installments, was $115.7 million as of March 31, 2013 and approximated fair value based on current market rates. The carrying amount of long-term debt was $116.7 million as of December 31, 2012 and approximated fair value based on current market rates.

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The entire disclosure for financial instruments. This disclosure includes, but is not limited to, fair value measurements of short and long term marketable securities, international currencies forward contracts, and auction rate securities. Financial instruments may include hedging and non-hedging currency exchange instruments, derivatives, securitizations and securities available for sale at fair value. Also included are investment results, realized and unrealized gains and losses as well as impairments and risk management disclosures.

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