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SEGMENT REPORTING (Schedule of Revenue and Long-Lived Assets by Geographical Areas) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues $ 245,627 $ 279,332 $ 253,335
Property and equipment, net 37,653 45,900 50,460
IL [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues 120,515 110,102 116,186
Property and equipment, net 13,784 14,967 16,478
BR [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues 61,470 98,020 90,842
Property and equipment, net 14,462 21,218 24,562
Other Foreign Countries [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues 63,642 71,210 46,307
Property and equipment, net $ 9,407 $ 9,715 $ 9,420