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L. SHARE-BASED COMPENSATION - SHARE-BASED COMPENSATION EXPENSE 1 (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Total share-based compensation expense | $ 3,833 | $ 2,120 | $ 2,061
Employee Stock Option [Member] |  |  |
Total share-based compensation expense | 1,460 | 1,538 | 1,660
Restricted stock units |  |  |
Total share-based compensation expense | 2,373 | 582 | 385
Warrants [Member] |  |  |
Total share-based compensation expense |  |  | 16
Cost of sales [Member] |  |  |
Total share-based compensation expense | 190 | 70 | 88
Research and development [Member] |  |  |
Total share-based compensation expense | 591 | 230 | 115
Sales and marketing [Member] |  |  |
Total share-based compensation expense | 357 | 217 | 98
General and administrative [Member] |  |  |
Total share-based compensation expense | $ 2,695 | $ 1,603 | $ 1,760

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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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