Derivative Instruments (Details 4) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Derivative Instruments
Aggregate fair value of derivative instruments in asset positions and maximum loss if all counterparties failed to perform as contracted	$ 1,900,000
Fair Value of Assets
Gross Amounts of Recognized Assets	1,883,000	1,120,000
Gross derivative amounts not offset in the balance sheet that are eligible for offsetting
Gross derivative amounts not offset that are eligible for offsetting - foreign currency contracts	(217,000)	(286,000)
Net amount	1,666,000	834,000
Fair Value of Liabilities
Gross Amounts of Recognized Liabilities	350,000	646,000
Gross derivative amounts not offset in the balance sheet that are eligible for offsetting
Gross derivative amounts not offset that are eligible for offsetting - foreign currency contracts	(217,000)	(286,000)
Net amount	$ 133,000	$ 360,000

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Fair value of liability associated with derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

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This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

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