Consolidated Balance Sheets (Parentheticals) - shares	Dec. 31, 2016	Dec. 31, 2015
Limited partner's equity, units authorized (in shares)	8,000,000	8,000,000
Limited partner's equity, units issued (in shares)	5,587,616	5,587,616
Limited partner's equity, units outstanding (in shares)	5,587,616	5,587,616