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Shareholders' Equity - Schedule of Restricted Stock and Common Stock Unit Vested (Details) - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Shareholders' Equity
Restricted stock units vested and settled	4,000	4,000
Common stock issued, net of shares withheld	3,000	3,000

X

- Definition

Common stock issued, net of shares withheld.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Restricted stock units vested and settled.

+ References

No definition available.

+ Details

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Namespace Prefix:	NTN_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration