XML 27 R22.htm IDEA: XBRL DOCUMENT v2.4.0.6

6. STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2013

Stock-Based Compensation Tables

Weighted-Average Assumptions of Stock Based Compensation

		Three months ended March 31,
		2013		2012
Weighted-average risk-free rate		0.57%		0.82%
Weighted-average volatility		80.59%		95.97%
Dividend yield		0.00%		0.00%
Expected life		4.57 years		6.98 years

X

- Details

Name:	ntn_StockbasedCompensationTablesAbstract
Namespace Prefix:	ntn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration