SUPPLEMENTARY CONSOLIDATED BALANCE SHEETS INFORMATION (Tables)

12 Months Ended

Dec. 31, 2015

Supplementary Statement Of Balance Sheet Information [Abstract]

Schedule of other current assets

​	December 31,
​	2015		2014
​	U.S. dollars in thousands
a. Other current assets	​		​
Government institutions	​	1,822	​	1,026
Prepaid expenses	​	2,363	​	1,948
Deferred taxes	​	—	​	605
Other account receivables	​	4,612	​	5,277
Interest receivable	​	2,161	​	221
Restricted bank deposits	​	3,061	​	2,315
Other	​	798	​	743
​	​	14,817	​	12,135

Schedule of property and equipment

​	December 31,
​	2015		2014
​	U.S. dollars in thousands
b. Property and equipment, net	​		​
Computers, electronic equipment and software	​	12,538	​	13,848
Vehicles	​	1,007	​	617
Office furniture and equipment	​	759	​	665
Leasehold improvements	​	4,071	​	3,839
Equipment	​	476	​	476
Prepayment of property	​	745	​	—​
​	​	19,596	​	19,445
Less – accumulated depreciation	​	8,565	​	10,658
​	​	11,031	​	8,787

Schedule of account payable and accrued expenses

​	December 31,
​	2015		2014
​	U.S. dollars in thousands
c. Account payable and accrued expenses	​		​
Account payable	​	17,461	​	12,016
Accrued expenses	​	7,132	​	5,854
​	​	24,593	​	17,870

Schedule of other current Liabilities

​	December 31,
​	2015		2014
​	U.S. dollars in thousands
d. Other current Liabilities	​	​	​	​
Institutions	​	1,490	​	2,215
Advances from NRE arrangements	​	2,628	​	1,303
Advances from customers	​	1,712	​	1,180
Other	​	857	​	471
​	​	6,687	​	5,169