XML 54 R31.htm IDEA: XBRL DOCUMENT v3.19.2

STOCKHOLDERS' EQUITY (Tables)

6 Months Ended

Jun. 30, 2019

Stockholders' Equity:

Schedule of assumptions used in the Black-Scholes Model of stock options

	Six months ended June 30,
	2019		2018
Risk-free interest rate	2.19—2.54 %		2.38—2.63 %
Volatility	61.25—61.85 %		61.82—64.04 %
Term (in years)	5.5—6.25		5.1—6.25
Dividend yield	0.00%		0.00%

Schedule of activity of 2009 and 2012 Plans

A summary of activity under the 2009, 2012 and 2019 Plans and related information follows:

		Number of Shares Underlying Stock Options				Weighted Average Exercise Price				Weighted Average Remaining Contractual Life in Years				Aggregate Intrinsic Value
Balance at December 31, 2018			20,872,824			$	4.93				5.94			$	12,239,876
Granted			1,544,500			$	4.40
Exercised			(288,480	)		$	0.35							$	1,315,238
Expired/Forfeited			(56,375	)		$	5.77
Balance at June 30, 2019			22,072,469			$	4.95				5.80			$	3,945,665
Vested and Exercisable at June 30, 2019			17,125,888			$	4.79				4.94			$	3,945,665
Unvested at June 30, 2019			4,946,581			$	5.48				8.79			$	0

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

+ Details

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

X

- References

No definition available.

+ Details

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