Significant Accounting Policies, Accumulated Other Comprehensive Loss (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Significant Accounting Policies [Abstract]
Accumulated currency translation loss	$ 1,700,000	$ 1,500,000
Accumulated unrealized gains (losses) on investments	$ (23,000)	$ 0

Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

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Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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