Debt - Narrative (Details) - USD ($)		1 Months Ended
	Apr. 15, 2021	Apr. 30, 2020	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Debt collateral amount	$ 71,200,000
Long-term debt			$ 67,035,000	$ 66,962,000
2021 Bonds
Debt Instrument [Line Items]
Aggregate principal amount	$ 68,155,000
Interest Rate	1.50%
Debt collateral amount	$ 71,200,000
Debt premium	800,000		600,000
Debt issuance costs	3,000,000		2,100,000
Used bond proceeds			53,000,000
Unused bond proceeds			$ 15,200,000
2021 Bonds | Letter of Credit
Debt Instrument [Line Items]
Cash deposited in bank	$ 71,200,000
2021 Bonds | Loans Payable
Debt Instrument [Line Items]
Interest Rate			1.50%
Long-term debt			$ 66,669,000	66,486,000
SBA Loans | Loans Payable
Debt Instrument [Line Items]
Interest Rate	1.00%		1.00%
Proceeds from issuance of long-term debt		$ 1,000,000
Debt instrument, decrease, forgiveness	$ 500,000
Long-term debt	300,000		$ 296,000	$ 320,000
Debt Instrument, monthly payment	8,230
SBA Loans | Loans Payable | Agri-Energy
Debt Instrument [Line Items]
Debt instrument, decrease, forgiveness	$ 100,000