XML 27 R16.htm IDEA: XBRL DOCUMENT

Note 4 - Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2016

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Nine Months Ended September 30, 2016
	(unaudited)

Expected dividend yield		0	%
Expected volatility		62	%
Risk-free interest rate		1.42	%
Expected term (years)		6.25

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Nine Months Ended September 30, 2016 (unaudited)
	Number			Average exercise price		Aggregate intrinsic value (in thousands)		Average remaining contractual life (years)

Options outstanding as of January 1, 2016		2,782,560		$	14.026	$	21,337		6.246
Granted		135,000		$	16.870
Exercised		(324,992	)	$	6.661
Forfeited		(75,834	)	$	26.334

Options outstanding as of September 30, 2016		2,516,734		$	14.759	$	40,122		5.927

Vested and expected to vest		2,444,514		$	14.531	$	39,511		5.856

Options exercisable at the end of the period		1,784,407		$	11.569	$	34,033		5.046

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

Range of exercise price			Options outstanding as of September 30, 2016		Weighted average remaining contractual life (years)		Weighted average exercise price		Options exercisable as of September 30, 2016		Weighted average remaining contractual life (years)		Weighted average exercise price of options exercisable

$0.901	-	$1.576		805,988		2.516	$	1.281		805,988		2.516	$	1.281
$6.230	-	8.800		90,873		5.222	$	6.951		90,873		5.222	$	6.951
$12.470	-	16.870		459,166		7.299	$	13.764		275,764		6.414	$	12.470
$19.510	-	21.660		554,457		7.873	$	21.207		278,018		7.803	$	21.204
$22.010	-	24.230		297,128		7.551	$	22.277		173,799		7.541	$	22.317
	$29.880			154,200		8.397	$	29.880		61,045		8.397	$	29.880
	$39.860			154,922		7.477	$	39.860		98,920		7.477	$	39.860

				2,516,734		5.927	$	14.759		1,784,407		5.046	$	11.569

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

	Options for shares of common stock		Exercise price per share		Options exercisable		Exercisable through
	(number)				(number)

February 2013		1,500	$	12.470		1,344		February 2023
August 2013		4,250	$	21.140		3,104		August 2023
October 2013		750	$	24.230		547		October 2023
March 2014		13,494	$	39.860		8,581		March 2024
May 2014		6,912	$	22.010		3,704		May 2024
November 2014		10,321	$	21.660		4,364		November 2024
May 2015		5,250	$	19.510		1,750		May 2025
February 2016		2,500	$	16.870		--		February 2026

		44,977				23,394

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

	Number of shares underlying outstanding restricted stock units			Weighted- average grant date fair value
Unvested balance - January 1, 2016		643,506		$	23.38
Granted		897,244		$	18.17
Vested		(159,585	)	$	23.98
Forfeited		(46,924	)	$	19.07
Unvested balance – September 30, 2016		1,334,241		$	19.96

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
	(unaudited)				(unaudited)
	(in thousands)				(in thousands)

Cost of revenues	$	186	$	98	$	504	$	300
Research and development		805		524		2,263		1,535
Sales and marketing		1,613		756		4,416		2,195
General and administrative		854		679		2,272		1,674

Total	$	3,458	$	2,057	$	9,455	$	5,704

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

+ References + Details