CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 129,400	$ 126,900
Accounts receivable – third parties	300	200
Accounts receivable – related parties	10,100	11,000
Prepaid expenses	4,200	6,600
Other current assets	2,900	2,900
Total current assets	146,900	147,600
Equity method investments (Note 3)	520,000	519,900
Property, plant and equipment, net (Note 4)	68,200	67,900
Other assets	3,600	3,500
Total assets	738,700	738,900
Current liabilities
Accounts payable – third parties	700	1,900
Accounts payable – related parties	1,800	1,900
Deferred revenues and credits – related parties	900	1,800
Other current liabilities (Note 5)	5,800	7,800
Total current liabilities	9,200	13,400
Long-term debt – related parties (Note 6)	468,000	468,000
Other liabilities	3,600	3,500
Total liabilities	480,800	484,900
Commitments and contingencies (Note 10)
EQUITY
General partner	1,200	1,200
Total partner's capital	126,000	121,500
Non-controlling interests	131,900	132,500
Total equity	257,900	254,000
Total liabilities and equity	738,700	738,900
Common Units | Public
EQUITY
Common stock	124,800	800,500
Subordinated Units | BP Holdco
EQUITY
Common stock	$ 0	$ (680,200)