Notes Payable and Convertible Notes - Summary of Notes Payable and Convertible Notes (Details) - USD ($) $ in Thousands			6 Months Ended	12 Months Ended
	May 28, 2020	May 14, 2020	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Beginning Balance			$ 67,015	$ 87,989
Loans advanced, net			930	9,146
Equity exchanged				13,661
Equity component				(5,842)
Accretion income				(643)
Loan payments			(2,674)	(47,380)
Gain on extinguishment of debt				(1,218)
Converted to equity			(17,719)	(1,939)
Accrued interest			7,649	13,241
Ending Balance			55,201	67,015	$ 87,989
Gotham Green Partners LLC
Debt Instrument [Line Items]
Beginning Balance				35,607
Loans advanced, net				2,810
Equity component				(692)	(4,874)
Accretion income				(643)
Loan payments				(39,855)
Gain on extinguishment of debt				(1,218)
Accrued interest				3,991
Ending Balance					35,607
LI Lending, LLC
Debt Instrument [Line Items]
Beginning Balance			45,362	44,289
Loan payments			(2,317)	(6,840)
Accrued interest			3,798	7,913
Ending Balance			46,843	45,362	44,289
May 2020 Convertible Notes
Debt Instrument [Line Items]
Beginning Balance			2,855
Loans advanced, net		$ 5,827		5,827
Equity component				(3,982)
Converted to equity			(5,852)	(145)
Accrued interest			2,997	1,155
Ending Balance				2,855
May 2020 Convertible Notes (Swap)
Debt Instrument [Line Items]
Beginning Balance			11,867
Equity exchanged	$ 13,661			13,661
Converted to equity			(11,867)	(1,794)
Ending Balance				11,867
Other Loans
Debt Instrument [Line Items]
Beginning Balance			6,931	8,093
Loans advanced, net			930	509
Equity component				(1,168)
Loan payments			(357)	(685)
Accrued interest			854	182
Ending Balance			$ 8,358	$ 6,931	$ 8,093