CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (37,938)	$ (87,396)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	21,946	23,116
Provision for credit losses and inventory	1,006	560
Stock-based compensation expense	14,721	6,786
Stock-based sales incentive charges	8,533	78,053
Change in fair value of derivative instruments	2,114	2,507
Amortization of discount and debt issuance cost	(306)	26
Loss (gain) on disposal of property and equipment	(66)	174
Loss on extinguishment of debt	2,268	25
Loss from equity method investments	2,870	305
Non-cash lease expense	1,687	1,470
Deferred income taxes	62	61
Changes in operating assets and liabilities:
Accounts and other receivables	19,024	2,211
Inventory	(4,487)	(732)
Prepaid expenses and other assets	(2,002)	(11,722)
Operating lease liabilities	(1,747)	(1,751)
Accounts payable	6,912	1,547
Deferred revenue	(1,034)	388
Accrued liabilities and other	(1,325)	(2,711)
Net cash provided by operating activities	32,238	12,917
Cash flows from investing activities:
Purchases of short-term investments	(194,353)	(177,981)
Maturities and sales of short-term investments	194,250	87,301
Purchases of and deposits on property and equipment	(17,447)	(7,888)
Disbursements for loans receivable	(516)	(3,828)
Payments on and proceeds from sales of loans receivable	218	224
Cash received from sale of certain assets of subsidiary, net	3,885	887
Investments in other entities	(51,600)	(50,669)
Payment and deposits on equipment and manure rights for RNG production projects	(4,915)	0
Proceeds from disposal of property and equipment	80	1,577
Net cash used in investing activities	(70,398)	(150,377)
Cash flows from financing activities:
Issuance of common stock	573	203,923
Repurchase of common stock	(6,122)	0
Fees paid for issuance of common stock		(6,534)
Fees paid for debt issuance costs	(50)	0
Proceeds for Adopt-a-Port program	890	4,670
Repayment of proceeds for Adopt-a-Port program	(525)
Proceeds from debt instruments	14,000	4,400
Proceeds from revolving line of credit	0	1,150
Repayments of borrowing under revolving line of credit	0	(650)
Repayments of debt instruments and finance lease obligations	(17,315)	(48,584)
Payments of debt extinguishment costs	(2,186)	(14)
Net cash provided by (used in) financing activities	(10,735)	158,361
Effect of exchange rates on cash, cash equivalents and restricted cash	(66)	167
Net increase (decrease) in cash, cash equivalents and restricted cash	(48,961)	21,068
Cash, cash equivalents and restricted cash, beginning of period	106,456	119,977
Cash, cash equivalents and restricted cash, end of period	57,495	141,045
Supplemental disclosure of cash flow information:
Income taxes paid	50	10
Interest paid, net of $0 and $0 capitalized, respectively	$ 923	$ 2,460