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SEGMENT REPORTING (Reconciliation of Reporting Information from Segments to Consolidated Totals) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Segment Reporting Information [Line Items] |  |  |  |
Total revenues of reportable segment and consolidated revenues |  | $ 234,636 | $ 199,574 | $ 175,628
Operating Income |  |  |  |
Total operating income for reportable segments |  | 56,535 | 47,998 | 40,644
Consolidated income before taxes on income |  | 55,546 | 50,054 | 41,833
Assets |  |  |  |
Current assets |  | 137,112 | 111,189 |
Property and equipment, net |  | 39,047 | 35,644 | 31,514
Total assets |  | 215,159 | 178,019 |
Other significant items |  |  |  |
Expenditures for assets |  | 10,027 | 9,331 | 14,871
Asset expenditures, reportable segments and unallocated amounts |  | 16,308 | 13,829 | 18,547
Depreciation, amortization and impairment for reportable segments |  | 10,358 | 9,160 | 8,788
Depreciation and amortization |  | 13,519 | 11,635 | 11,962
Reportable Segment [Member] |  |  |  |
Operating Income |  |  |  |
Total operating income for reportable segments |  | 56,535 | 47,998 | 40,644
Assets |  |  |  |
Total assets | [1] | 116,353 | 103,976 | 76,055
Other significant items |  |  |  |
Expenditures for assets |  | 10,027 | 9,331 | 14,871
Depreciation, amortization and impairment for reportable segments |  | 10,358 | 9,160 | 9,717
Segment Reconciling Items [Member] |  |  |  |
Operating Income |  |  |  |
Financing income, net |  | (989) | 2,056 | 1,189
Assets |  |  |  |
Current assets |  | 59,412 | 43,874 | 46,119
Investments in affiliated and other companies |  | 16,221 | 12,060 | 4,783
Property and equipment, net |  | 15,092 | 10,912 | 8,730
Other unallocated amounts |  | 8,081 | 7,197 | 6,316
Other significant items |  |  |  |
Expenditure for assets unallocated amounts |  | 6,281 | 4,498 | 3,676
Depreciation and amortization, unallocated amounts |  | $ 3,161 | $ 2,475 | $ 2,245
[1] | Including goodwill.

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