XML 49 R21.htm IDEA: XBRL DOCUMENT v2.4.0.8

6. STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Weighted-Average Assumptions of Stock Based Compensation

		Three months ended June 30,				Six months ended June 30,
		2014		2013		2014		2013
Weighted-average risk-free rate		1.26%		0.55%		1.25%		0.56%
Weighted-average volatility		81.42%		79.47%		81.62%		79.80%
Dividend yield		0.00%		0.00%		0.00%		0.00%
Expected life		4.89 years		4.92 years		4.75 years		4.82 years

X

- Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
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