LOANS PAYABLE - Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
LOAN PAYABLE
Loan payable	$ 70,000	$ 70,000
End of term fee	4,165	5,140
Loan payable, gross	74,165	75,140
Less: unamortized debt issuance costs	(6,916)	(7,377)
Loan payable	67,249	67,763
Total loan payable	67,249	67,763
Less: Current portion		(975)
Loan payable non-current	$ 67,249	$ 66,788

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- Definition

Long term debt excluding principal payments

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt classified as other.

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- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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