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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Changes in Options Outstanding) (Details)
$ / shares in Units, $ in Thousands
6 Months Ended
Jun. 30, 2016
USD ($)
$ / shares
shares
Number of Options  
Balance | shares 267,289
Granted | shares
Exercised | shares (7,465)
Expired | shares (13,579)
Forfeited | shares (442)
Balance | shares 245,803
Vested and expected to vest | shares 245,201
Exercisable | shares 235,776
Weighted Average Exercise Price  
Balance | $ / shares $ 17.28
Granted | $ / shares
Exercised | $ / shares 13.57
Expired | $ / shares 21.82
Forfeited | $ / shares 16.12
Balance | $ / shares 17.15
Vested and expected to vest | $ / shares 17.18
Exercisable | $ / shares $ 17.31
Weighted Average Remaining Contractual Term  
Balance 3 years 11 months 9 days
Vested and Expected to Vest 3 years 11 months 9 days
Exercisable 3 years 10 months 6 days
Aggregate Intrinsic Value  
Balance | $ $ 334
Vested and expected to vest | $ 326
Exercisable | $ $ 283