Share-based Compensation

6 Months Ended

Jun. 30, 2015

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

The Company included the following amounts for share-based compensation awards in the unaudited condensed consolidated statements of operations (in thousands):



	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Cost of revenues (1)	$	37	$	11	$	58	$	(19	)
Research and development	187		210		402		257
Sales and marketing	143		143		183		222
General and administrative	816		398		1,330		779
Total	$	1,183	$	762	$	1,973	$	1,239


(1)	Negative expense resulted from a change in the estimated forfeiture rates during the first quarter of 2014.

Employee Stock Purchase Plan

The Company’s 2000 Employee Stock Purchase Plan (the “ESPP”) permits eligible employees to purchase newly issued shares of the Company's common stock, at a price equal to 85% of the lower of the fair market value on (i) the first day of the offering period or (ii) the last day of each six-month purchase period, through payroll deductions of up to 10% of their annual cash compensation.

The Company terminated the ESPP in 2012 but reinstated the program effective August 16, 2014. Under the reinstated ESPP, the Company is authorized to issue 1,500,132 shares of common stock purchased by eligible employees under the plan.

During the three and six months ended June 30, 2015, the Company recognized $0.2 million and $0.1 million, respectively, of stock-based compensation expense related to the ESPP.