12.5% Senior Secured Notes and Loans Payable - 12.5% Senior Secured Notes (Details) $ / shares in Units, $ in Thousands				3 Months Ended			6 Months Ended		12 Months Ended
	Oct. 07, 2021 USD ($) payment	Nov. 03, 2020 USD ($) shares	Jul. 15, 2019 USD ($) $ / shares shares	Jun. 30, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) $ / shares shares	Jun. 30, 2021 USD ($)	Jun. 30, 2025	Sep. 30, 2022	Jun. 08, 2022 $ / shares	Jun. 06, 2022 $ / shares	Dec. 31, 2020 USD ($)
12.5% Senior Secured Notes [Abstract]
Warrants issued (in shares) | shares			2,000,000
Warrant exercise price (in dollars per share) | $ / shares			$ 0.001									$ 0.0001
Net proceeds from issuance of initial notes, warrants and first offer rights			$ 66,082
Long-term debt				$ 51,500			$ 51,500
Premium on early retirement of debt		$ 2,250					2,250
Premium paid to retire debt							675	$ 0
Interest and other income, net					$ 13,822
Amortization expense, deferred debt issuance costs and debt discounts							$ 109	2,388
Forecast
12.5% Senior Secured Notes [Abstract]
Principal payments, percentage of face amount									40.00%	10.00%
Senior notes
12.5% Senior Secured Notes [Abstract]
Proceeds from refinancing of debt		4,000
Payments of loan costs		$ 220
Minimum
12.5% Senior Secured Notes [Abstract]
Warrant exercise price (in dollars per share) | $ / shares											$ 0.96
Maximum
12.5% Senior Secured Notes [Abstract]
Warrant exercise price (in dollars per share) | $ / shares											$ 1.09
Maximum | MAM Pangolin Royalty , LLC
12.5% Senior Secured Notes [Abstract]
Percentage of cash proceeds							30.00%
Senior secured notes due 2025
12.5% Senior Secured Notes [Abstract]
Interest rate				12.50%			12.50%
Principal amount			$ 70,000
Warrants issued (in shares) | shares		714,000
Warrants issued to purchase common stock (in shares) | shares		143,000
Additional borrowing capacity				$ 30,000			$ 30,000
Redemption percentage of debt under change of control provisions							101.00%
Amortization expense, deferred debt issuance costs and debt discounts				4		$ 1,165	$ 8	$ 2,317
Unamortized deferred debt issuance cost and deferred debt discounts				35	$ 43		35
Senior secured notes due 2025 | Put option
12.5% Senior Secured Notes [Abstract]
Fair value of put option				$ 105			$ 105
Senior secured notes due 2025 | Senior notes
12.5% Senior Secured Notes [Abstract]
Interest rate			12.50%	12.50%			12.50%
Repayment of debt		$ 22,500
Long-term debt		$ 70,000		$ 51,500			$ 51,500						$ 51,500
Repurchase price percentage							112.50%
Premium paid to retire debt	$ 2,700
Number of quarterly payments | payment	4
Senior secured notes due 2025 | Minimum
12.5% Senior Secured Notes [Abstract]
Elective redemption percentage of debt							101.56%
Senior secured notes due 2025 | Maximum
12.5% Senior Secured Notes [Abstract]
Principal amount			$ 100,000
Elective redemption percentage of debt							112.50%
Senior secured notes due 2025 - first additional offering
12.5% Senior Secured Notes [Abstract]
Warrant exercise price (in dollars per share) | $ / shares				$ 0.001			$ 0.001
Additional borrowing capacity				$ 10,000			$ 10,000
Senior secured notes due 2025 - first additional offering | Maximum
12.5% Senior Secured Notes [Abstract]
Warrants issued (in shares) | shares				2,143,000			2,143,000
Senior secured notes due 2025 - second additional offering
12.5% Senior Secured Notes [Abstract]
Additional borrowing capacity				$ 20,000			$ 20,000