Consolidated Statements of Partners' Equity (Unaudited)	USD ($)
PARTNERS' EQUITY - BEGINNING OF PERIOD at Dec. 31, 2017	$ 14,273,208
Net income	2,402,763
Cash distributions ($0.30 per unit in 2019)
Repurchase of Units	(7,509)
Options exercised	3,300
PARTNERS' EQUITY - END OF PERIOD at Jun. 30, 2018	16,671,762
PARTNERS' EQUITY - BEGINNING OF PERIOD at Dec. 31, 2018	18,709,962
Net income	2,179,548
Cash distributions ($0.30 per unit in 2019)	(1,684,936)
Repurchase of Units	(129,582)
Options exercised	45,000
PARTNERS' EQUITY - END OF PERIOD at Jun. 30, 2019	$ 19,119,992