Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Other Securities (Details 3)

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Fair Value of Other Securities (Details 3) - USD ($)
Jun. 30, 2015
Dec. 31, 2014
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Assets $ 696,477,687 $ 443,815,842
Total Liabilities 237,148,561 106,274,800
Reported Value Measurement [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Assets 650,385 408,740
Total Liabilities 213,787 128,128
Unconsolidated Affiliates [Member] | Reported Value Measurement [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Assets, Current 31,379 25,783
Assets, Noncurrent 619,006 382,957
Liabilities, Current 16,513 14,318
Liabilities, Noncurrent 197,274 113,810
Members' Equity 436,598 280,612
Total liabilities and partner's equity $ 650,385 $ 408,740