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ENTITY-WIDE DISCLOSURE (Tables)
12 Months Ended
Dec. 31, 2015
Risks and Uncertainties [Abstract]  
Schedule of total revenues based on the country and long-lived assets

Year ended December 31,
2015
2014
2013
U.S. dollars in thousands
North America, mainly USA
111,334 77,680 52,679
Japan
7,234 2,476 9,642​
South Korea
16,265 3,293 801
Germany
11,229 3,237 2,220
Sweden
28,541 16,356 8,743
United Kingdom
31,402 20,404 724
EUROPE – other
6,471 3,380 1,525
Israel
20,533 12,512 1,995
APAC – other
5,790 2,706 1,304
South America
1,867 1,267 1,496
Africa
206 326 116
240,872 143,637 81,245

Year ended December 31,
2015
2014
2013
U.S. dollars in thousands
Revenues from major customers
139,975 103,713 56,941
Percent of total revenues
Customer A
31% 33% 18%
Customer B
15% 23% 34%
Customer C
12% 11% 11%