Amount of amortization expense attributable to debt issuance costs.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Borrowings - NMNLC Credit Facility II (Details) - USD ($) $ in Thousands				3 Months Ended		9 Months Ended
	Nov. 01, 2022	Dec. 07, 2021	Dec. 06, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Mar. 16, 2022	Mar. 15, 2022	Dec. 31, 2021
Line of Credit Facility [Line Items]
Amortization of financing costs						$ 5,082	$ 5,660
Revolving Credit Facility \| NMNLC Credit Facility II
Line of Credit Facility [Line Items]
Credit facility outstanding balance				$ 2,934		2,934				$ 15,200
Revolving Credit Facility \| NMNLC Credit Facility II \| Credit Facility
Line of Credit Facility [Line Items]
Maximum amount of borrowings available				10,000		10,000		$ 10,000	$ 20,000
Commitment fee percentage on unused capacity		0.05%	0.05%
Interest expense				25	$ 27	225	27
Non-usage fee				1	1	2	3
Amortization of financing costs				$ 5	$ 24	$ 40	$ 55
Weighted average interest rate				5.00%		3.40%
Effective interest rate				6.10%		4.00%
Revolving Credit Facility \| NMNLC Credit Facility II \| Credit Facility \| Subsequent Event
Line of Credit Facility [Line Items]
Maximum amount of borrowings available	$ 27,500
Revolving Credit Facility \| NMNLC Credit Facility II \| Credit Facility \| LIBOR
Line of Credit Facility [Line Items]
Interest rate margin			2.75%
Revolving Credit Facility \| NMNLC Credit Facility II \| Credit Facility \| SOFR
Line of Credit Facility [Line Items]
Interest rate margin		2.75%
Revolving Credit Facility \| NMNLC Credit Facility II \| Credit Facility \| SOFR \| Subsequent Event
Line of Credit Facility [Line Items]
Interest rate margin	2.25%
Revolving Credit Facility \| NMNLC Credit Facility II \| Credit Facility \| SOFR \| Minimum
Line of Credit Facility [Line Items]
Interest rate margin		0.35%