Consolidated Statements of Partners' Equity (unaudited)	USD ($)
PARTNERS' EQUITY - BEGINNING OF PERIOD at Dec. 31, 2017	$ 14,273,208
Net income	756,525
PARTNERS' EQUITY - END OF PERIOD at Mar. 31, 2018	15,029,733
PARTNERS' EQUITY - BEGINNING OF PERIOD at Dec. 31, 2018	18,709,962
Net income	1,373,899
PARTNERS' EQUITY - END OF PERIOD at Mar. 31, 2019	$ 20,083,861