Schedule of Investments (Details) - Condensed Consolidated Schedule of Investments (Securities) (Parentheticals) (USD $)			9 Months Ended		9 Months Ended		9 Months Ended																12 Months Ended				9 Months Ended		12 Months Ended		12 Months Ended				9 Months Ended				9 Months Ended
	Sep. 30, 2013 Corporate Bond Securities [Member] National Australia Bank, Floating Note [Member]	Dec. 31, 2012 Corporate Bond Securities [Member] National Australia Bank, Floating Note [Member]	Sep. 30, 2013 Corporate Bond Securities [Member] BB&T Corp Note [Member]	Dec. 31, 2012 Corporate Bond Securities [Member] BB&T Corp Note [Member]	Sep. 30, 2013 Corporate Bond Securities [Member] Goldman Sachs Group Inc. Nt [Member]	Dec. 31, 2012 Corporate Bond Securities [Member] Goldman Sachs Group Inc. Nt [Member]	Sep. 30, 2013 Corporate Bond Securities [Member] JP Morgan Corp Note [Member]	Dec. 31, 2012 Corporate Bond Securities [Member] JP Morgan Corp Note [Member]	Sep. 30, 2013 Commercial Paper [Member] Suncorp Metway Ltd. [Member]	Dec. 31, 2012 Commercial Paper [Member] Suncorp Metway Ltd. [Member]	Sep. 30, 2013 Commercial Paper [Member] Banco De Chile [Member]	Dec. 31, 2012 Commercial Paper [Member] Banco De Chile [Member]	Sep. 30, 2013 Commercial Paper [Member] Korea Development Bank [Member]	Dec. 31, 2012 Commercial Paper [Member] Korea Development Bank [Member]	Sep. 30, 2013 Commercial Paper [Member] Shinhan Bank CP [Member]	Dec. 31, 2012 Commercial Paper [Member] Shinhan Bank CP [Member]	Sep. 30, 2013 Commercial Paper [Member] Macquarie Bank CP [Member]	Dec. 31, 2012 Commercial Paper [Member] Macquarie Bank CP [Member]	Sep. 30, 2013 Commercial Paper [Member] Nextra Energy Capital Holdings [Member]	Dec. 31, 2012 Commercial Paper [Member] Nextra Energy Capital Holdings [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member] Federal Home Loan Bank [Member]	Dec. 31, 2012 US Government Agencies Debt Securities [Member] Federal Home Loan Bank [Member]	Dec. 31, 2012 US Government Agencies Debt Securities [Member] Federal Home Loan Bank [Member] Minimum [Member]	Dec. 31, 2012 US Government Agencies Debt Securities [Member] Federal Home Loan Bank [Member] Maximum [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member] Federal Home Loan Bank #2 [Member]	Dec. 31, 2012 US Government Agencies Debt Securities [Member] Federal Home Loan Bank #2 [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member] Federal Home Loan Bank #2 [Member] Minimum [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member] Federal Home Loan Bank #2 [Member] Maximum [Member]	Dec. 31, 2012 US Government Agencies Debt Securities [Member] Freddie Mac Bond [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member] Freddie Mac Bond [Member]	Dec. 31, 2012 US Government Agencies Debt Securities [Member] Freddie Mac Note [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member] Freddie Mac Note [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member] Freddie Mac Bond #2 [Member]	Dec. 31, 2012 US Government Agencies Debt Securities [Member] Freddie Mac Bond #2 [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member] Freddie Mac Bond #2 [Member] Minimum [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member] Freddie Mac Bond #2 [Member] Maximum [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member] Fannie Mae [Member]	Dec. 31, 2012 US Government Agencies Debt Securities [Member] Fannie Mae [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member] Fannie Mae [Member] Minimum [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member] Fannie Mae [Member] Maximum [Member]	Sep. 30, 2013 Private Equity Funds, Domestic [Member]	Dec. 31, 2012 Private Equity Funds, Domestic [Member]	Sep. 30, 2013 Fixed Income Securities [Member]	Dec. 31, 2012 Fixed Income Securities [Member]
Schedule of Investments [Line Items]
Cost	$ 0	$ 1,504,227	$ 762,124	$ 0	$ 739,575	$ 0	$ 636,316	$ 0	$ 748,330	$ 999,542	$ 0	$ 999,222	$ 749,303	$ 999,316	$ 698,563	$ 0	$ 748,469	$ 0	$ 0	$ 999,611	$ 0	$ 2,000,000			$ 1,500,000	$ 0			$ 2,000,084	$ 0	$ 1,500,000	$ 0	$ 2,502,144	$ 0			$ 1,250,000	$ 0			$ 2,371	$ 3,600	$ 10,337,195	$ 11,005,602
Interest rate			2.05%		6.00%		2.05%																0.30%	0.45%			0.60%	0.75%	0.35%		0.50%				0.35%	0.625%			0.55%	0.65%