CONDENSED BALANCE SHEETS (Unaudited) (Parenthetical) - shares	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Partners' Equity, common units authorized	100,000,000	100,000,000
Partners' Equity, common units issued	86,554,634	85,975,911
Partners' Equity, common units outstanding	86,554,634	85,975,911