CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($) $ in Thousands	Total	General Partner's Interest General Class A	Common Limited Partners' Interests	Common Limited Partners' Warrants
Balance at Dec. 31, 2017	$ 71,912	$ (2,611)	$ 71,387	$ 3,136
Balance (units) at Dec. 31, 2017		100	23,300,410	2,330,041
Net loss	(45,008)	$ (900)	$ (44,108)
Balance at Dec. 31, 2018	26,904	$ (3,511)	$ 27,279	$ 3,136
Balance (units) at Dec. 31, 2018		100	23,300,410	2,330,041
Net loss	(15,540)	$ (310)	$ (15,230)
Balance at Dec. 31, 2019	11,364	$ (3,821)	$ 12,049	$ 3,136
Balance (units) at Dec. 31, 2019		100	23,300,410	2,330,041
Net loss	(7,637)	$ (152)	$ (7,485)
Balance at Dec. 31, 2020	$ 3,727	$ (3,973)	$ 4,564	$ 3,136
Balance (units) at Dec. 31, 2020		100	23,300,410	2,330,041

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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