Share-based compensation

3 Months Ended

Mar. 31, 2015

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

8. Share-based compensation

All share-based compensation costs are measured at the grant date, based on the estimated fair value of the award, and are recognized as expense in the condensed consolidated statements of operations over the requisite service period.

The following table shows the detail of share-based compensation by line item in the condensed consolidated statements of operations:

	Three Months Ended March 31,
(U.S. Dollars, in thousands)	2015		2014
Cost of sales	$	111	$	29
Sales and marketing		306		444
General and administrative		1,269		642
Research and development		91		72
Total	$	1,777	$	1,187

On June 30, 2014, the Company granted restricted share awards to executive employees. Vesting is based on achieving earnings targets in two consecutive rolling four quarter periods. As of March 31, 2015, no expense has been recognized for these contingent restricted share awards.

During the three months ended March 31, 2015 and 2014, there were 153,367 and 263,575 shares, respectively, of common stock issued related to stock purchase plan issuances, stock option exercises and the vesting of restricted stock awards.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

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