Debt Instrument, Discount Rate

No definition available.

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- Definition

Amount of amortization expense attributable to debt issuance costs.

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- Definition

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

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

Represents the charge against earnings during the period for commitment fees and debt issuance expenses.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

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

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- Definition

Aggregate amount of interest paid or due on all long-term debt.

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- Definition

The effective interest rate during the reporting period.

+ References

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

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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- Definition

Period between issuance and maturity of long-term debt, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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- Definition

Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Schedule I - Parent Company Only - Long-Term Debt (Detail) - USD ($)				12 Months Ended
	Mar. 16, 2020	Feb. 26, 2020	Nov. 28, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jun. 16, 2020	Nov. 06, 2018	Nov. 01, 2018
Debt Instrument
Long-term debt				$ 680,385,000	$ 589,294,000
Proceeds from warehouse facilities				12,374,231,000	8,783,225,000	$ 8,612,671,000
Repayments of lines of credit				$ 11,522,677,000	$ 9,545,964,000	8,000,725,000
Line of Credit \| Revolving Credit Facility
Debt Instrument
Stated interest rate (in percentage)				1.90%	3.76%
Long-term debt				$ 137,613,000	$ 48,917,000
Principal balance				140,000,000	50,000,000
Less: Debt issue cost				2,387,000	1,083,000
Interest expense				6,618,000	1,865,000	0
Debt issue cost amortization				1,012,000	565,000	47,000
Debt discount amortization				354,000	627,000	71,000
Total				7,984,000	$ 3,057,000	118,000
Maximum revolving credit	$ 465,000,000.0	$ 425,000,000.0
Long-term debt term (in years)			3 years
Proceeds from warehouse facilities				365,000,000.0
Repayments of lines of credit				$ 275,000,000.0
Line of Credit \| Revolving Credit Facility \| Weighted Average
Debt Instrument
Interest rate in the period (in percentage)				2.37%	3.76%
Line of Credit \| Revolving Credit Facility \| LIBOR
Debt Instrument
Basis spread on variable rate (in percentage)	1.75%	1.75%
6.125% Senior Notes \| Senior Notes
Debt Instrument
Stated interest rate (in percentage)				6.125%			6.125%	6.125%
Long-term debt				$ 542,772,000	$ 540,377,000
Debt instrument face amount								$ 550,000,000.0
Debt price level (in percentage)									98.94%
Debt instrument yield (in percentage)								6.375%
Principal balance				550,000,000	550,000,000
Less: Debt issue cost				3,688,000	4,972,000
Less: debt discount				3,540,000	4,651,000
Interest expense				33,687,000	34,730,000	5,300,000
Debt issue cost amortization				1,284,000	1,282,000	198,000
Debt discount amortization				1,111,000	565,000	47,000
Total				36,082,000	36,577,000	5,545,000
Authorized debt repurchase program (up to)							$ 50,000,000.0
NEWMARK Group Inc Parent
Debt Instrument
Long-term debt				680,385,000	589,294,000
Total				44,067,000	$ 39,634,000	27,249,000
Remaining from debt repurchase authorization				$ 50,000,000.0
NEWMARK Group Inc Parent \| Line of Credit \| Revolving Credit Facility
Debt Instrument
Stated interest rate (in percentage)				1.90%	3.76%
Long-term debt				$ 137,613,000	$ 48,917,000
Principal balance				140,000,000	50,000,000
Less: Debt issue cost				2,387,000	1,083,000
Interest expense				6,618,000	1,865,000	0
Debt issue cost amortization				1,012,000	565,000	47,000
Debt discount amortization				354,000	627,000	71,000
Total				7,984,000	$ 3,057,000	118,000
Maximum revolving credit	$ 465,000,000.0	$ 425,000,000.0	$ 250,000,000.0
Long-term debt term (in years)			3 years
Proceeds from warehouse facilities				365,000,000.0
Repayments of lines of credit				$ 275,000,000.0
NEWMARK Group Inc Parent \| Line of Credit \| Revolving Credit Facility \| Weighted Average
Debt Instrument
Interest rate in the period (in percentage)				2.37%	3.76%
NEWMARK Group Inc Parent \| Line of Credit \| Revolving Credit Facility \| LIBOR
Debt Instrument
Basis spread on variable rate (in percentage)	1.75%	1.75%
NEWMARK Group Inc Parent \| Line of Credit \| Revolving Credit Facility \| Interest Rate Option Two \| Federal Funds Rate
Debt Instrument
Basis spread on variable rate (in percentage)			0.50%
NEWMARK Group Inc Parent \| Line of Credit \| Revolving Credit Facility \| Interest Rate Option Two \| One-month LIBOR
Debt Instrument
Basis spread on variable rate (in percentage)			1.00%
NEWMARK Group Inc Parent \| Line of Credit \| Revolving Credit Facility \| Interest Rate Option Two \| LIBOR
Debt Instrument
Basis spread on variable rate (in percentage)			2.00%
NEWMARK Group Inc Parent \| Line of Credit \| Revolving Credit Facility \| Interest Rate Option Two \| LIBOR \| Minimum
Debt Instrument
Basis spread on variable rate (in percentage)			1.25%
NEWMARK Group Inc Parent \| Line of Credit \| Revolving Credit Facility \| Interest Rate Option Two \| LIBOR \| Maximum
Debt Instrument
Basis spread on variable rate (in percentage)			2.25%
NEWMARK Group Inc Parent \| Line of Credit \| Revolving Credit Facility \| Interest Rate Option One \| LIBOR
Debt Instrument
Basis spread on variable rate (in percentage)			1.00%
NEWMARK Group Inc Parent \| Line of Credit \| Revolving Credit Facility \| Interest Rate Option One \| LIBOR \| Minimum
Debt Instrument
Basis spread on variable rate (in percentage)			0.25%
NEWMARK Group Inc Parent \| Line of Credit \| Revolving Credit Facility \| Interest Rate Option One \| LIBOR \| Maximum
Debt Instrument
Basis spread on variable rate (in percentage)			1.25%
NEWMARK Group Inc Parent \| 6.125% Senior Notes \| Senior Notes
Debt Instrument
Stated interest rate (in percentage)				6.125%			6.125%	6.125%
Long-term debt				$ 542,772,000	$ 540,377,000
Debt instrument face amount								$ 550,000,000.0
Debt price level (in percentage)									98.94%
Debt instrument yield (in percentage)								6.375%
Principal balance				550,000,000	550,000,000
Less: Debt issue cost				3,688,000	4,972,000
Less: debt discount				3,540,000	4,651,000
Interest expense				33,687,000	34,730,000	5,300,000
Debt issue cost amortization				1,284,000	1,282,000	198,000
Debt discount amortization				1,111,000	565,000	47,000
Total				$ 36,082,000	$ 36,577,000	$ 5,545,000
Authorized debt repurchase program (up to)							$ 50,000,000.0