Annual report pursuant to Section 13 and 15(d)

Fair Value - Balance Sheet of Unconsolidated Affiliate (Details)

v3.6.0.2
Fair Value - Balance Sheet of Unconsolidated Affiliate (Details) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Assets    
Total Assets $ 650,732,571 $ 677,979,621
Liabilities    
Total Liabilities 216,823,091 233,785,315
Reported Value Measurement [Member] | Unconsolidated Affiliates [Member]    
Assets    
Current assets 20,413 24,276
Noncurrent assets 698,745 696,461
Total Assets 719,158 720,737
Liabilities    
Current liabilities 14,307 19,993
Noncurrent liabilities 268,175 246,808
Total Liabilities 282,482 266,801
Partner's equity 436,676 453,936
Total liabilities and partner's equity $ 719,158 $ 720,737