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SEGMENT GEOGRAPHICAL INFORMATION AND MAJOR CUSTOMERS (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Segment Reporting Information [Line Items]      
Total revenues $ 176,030 $ 164,304 $ 144,958
Expenses 154,596 143,578 125,831
Segment operating income (loss) 21,434 20,726 19,127
Depreciation and amortization 9,885 8,594 8,380
Software Services [Member]      
Segment Reporting Information [Line Items]      
Total revenues 67,271 69,861 67,453
Expenses 52,963 54,464 53,164
Segment operating income (loss) 14,308 15,397 14,289
Depreciation and amortization 6,562 6,065 5,917
IT Professional Services [Member]      
Segment Reporting Information [Line Items]      
Total revenues 108,759 94,443 77,505
Expenses 98,384 84,873 68,846
Segment operating income (loss) 10,375 9,570 8,659
Depreciation and amortization 3,042 2,263 2,210
Unallocated Expense [Member]      
Segment Reporting Information [Line Items]      
Total revenues 0 0 0
Expenses 3,249 4,241 3,821
Segment operating income (loss) (3,249) (4,241) (3,821)
Depreciation and amortization $ 281 $ 266 $ 253