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STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Total
Balance at Dec. 31, 2014 $ 189 $ 203,984 $ 42,826 $ (1,002) $ 245,997
Balance, shares at Dec. 31, 2014 69,202,431         69,202,431
Issuance of shares related to acquisitions $ 5 5,574 $ 5,579
Issuance of shares related to acquisitions, shares 1,798,837          
Issuance of shares in private placement, net of issuance cost of $105 $ 11 10,009 10,020
Issuance of shares in private placement, net of issuance cost of $105, shares 4,436,898          
Stock-based compensation 7,679 7,679
Exercise of stock options and vesting of restricted stock units $ 1 12 13
Exercise of stock options and vesting of restricted stock units, shares 373,321          
Other comprehensive income (loss) (794) (794)
Net loss (68,657) (68,657)
Balance at Dec. 31, 2015 $ 206 227,258 (794) (25,831) (1,002) $ 199,837
Balance, shares at Dec. 31, 2015 75,811,487         75,811,487
Issuance of shares related to acquisitions 675 $ 675
Issuance of shares related to acquisitions, shares 290,981          
Stock-based compensation 3,721 3,721
Exercise of stock options and vesting of restricted stock units $ 1 1
Exercise of stock options and vesting of restricted stock units, shares 224,120          
Other comprehensive income (loss) 881 881
Net loss (5,023) (5,023)
Balance at Jun. 30, 2016 $ 207 $ 231,654 $ 87 $ (30,854) $ (1,002) $ 200,092
Balance, shares at Jun. 30, 2016 76,326,588         76,326,588