Partners' Capital, Mezzanine Capital and Distributions (Distributions Paid-in-kind) (Details) - Class A Convertible Preferred Stock Units $ in Thousands	May 15, 2019 USD ($) shares
Temporary Equity [Line Items]
Date Issued	May 15, 2019
Number of Units (in units) | shares	364,180
Total Amount | $	$ 12,277