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SEGMENT GEOGRAPHICAL INFORMATION AND MAJOR CUSTOMERS (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Total revenues $ 126,380 $ 113,328 $ 88,578
Expenses 109,972 98,611 79,240
Segment operating income (loss) 16,408 14,717 9,338
Depreciation and amortization 7,444 5,040 4,566
Software Services [Member]
      
Total revenues 65,410 58,137 46,262
Expenses 50,497 44,086 36,556
Segment operating income (loss) 14,913 14,051 9,706
Depreciation and amortization 5,937 3,837 3,610
IT Professional Services [Member]
      
Total revenues 60,970 55,191 42,316
Expenses 55,456 50,468 39,249
Segment operating income (loss) 5,514 4,723 3,067
Depreciation and amortization 1,182 853 615
Unallocated Expense [Member]
      
Total revenues 0 0 0
Expenses 4,019 4,057 3,435
Segment operating income (loss) (4,019) (4,057) (3,435)
Depreciation and amortization $ 344 $ 350 $ 341