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Investments (Narrative) (Details) (USD $)	6 Months Ended
Investments (Narrative) (Details) (USD $)	Jun. 30, 2013	Jun. 30, 2012
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sale of investments	$ 1,948,839	$ 658,233
Gross realized gains	151,472	37,405
Gross realized losses	$ 30,192	$ 15,014
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Investment Securities	3

Disclosure regarding factors used to determine that the impairment of securities not categorized as either held-to-maturity securities or trading securities (hence equal to available for sale securities) where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of the number of investment positions in the available-for-sale investments determined to be temporarily impaired.

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