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GOODWILL AND OTHER INTANGIBLE ASSETS (Details Narrative) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Goodwill and Other Intangible Assets
Amortization expense relating to all intangible assets	$ 94,000	$ 101,000	$ 187,000	$ 202,000

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- Definition

Custom Element.

+ References

No definition available.

+ Details

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Namespace Prefix:	ntn_
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Balance Type:	debit
Period Type:	duration

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Balance Type:	na
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