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GOODWILL AND INTANGIBLE ASSETS, NET (Schedule of Intangible assets, net) (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Intangible assets, Net    
Balance at beginning of period $ 2,635 $ 6,496
Additions 16,726 442
Amortization (2,159) (4,256)
OCI (3) (47)
Balance at end of period 17,199 2,635
Acquired technology [Member]    
Intangible assets, Gross    
Balance at beginning of period 31,159 30,807
Additions 12,483 442
Amortization
OCI 25 (90)
Balance at end of period 43,667 31,159
Accumulated amortization    
Balance at beginning of period (21,810) (21,242)
Additions
Amortization (1,320) (649)
OCI (30) 81
Balance at end of period (23,160) (21,810)
Impairment    
Balance at beginning of period (8,749) (8,749)
Additions
Amortization
OCI
Balance at end of period (8,749) (8,749)
Intangible assets, Net    
Balance at beginning of period 600 816
Additions 12,483 442
Amortization (1,320) (649)
OCI (5) (9)
Balance at end of period 11,758 600
Customer Relationships [Member]    
Intangible assets, Gross    
Balance at beginning of period 31,911 31,940
Additions 4,243
Amortization
OCI 9 (29)
Balance at end of period 36,163 31,911
Accumulated amortization    
Balance at beginning of period (20,727) (19,825)
Additions
Amortization (659) (928)
OCI (8) 26
Balance at end of period (21,394) (20,727)
Impairment    
Balance at beginning of period (10,426) (10,426)
Additions
Amortization
OCI
Balance at end of period (10,426) (10,426)
Intangible assets, Net    
Balance at beginning of period 758 1,689
Additions 4,243
Amortization (659) (928)
OCI 1 (3)
Balance at end of period 4,343 758
Tradename and other [Member]    
Intangible assets, Gross    
Balance at beginning of period 18,284 18,415
Additions
Amortization
OCI 38 (131)
Balance at end of period 18,322 18,284
Accumulated amortization    
Balance at beginning of period (11,897) (9,314)
Additions
Amortization (180) (2,679)
OCI (37) 96
Balance at end of period (12,114) (11,897)
Impairment    
Balance at beginning of period (5,110) (5,110)
Additions
Amortization  
OCI
Balance at end of period (5,110) (5,110)
Intangible assets, Net    
Balance at beginning of period 1,277 3,991
Additions
Amortization (180) (2,679)
OCI 1 (35)
Balance at end of period $ 1,098 $ 1,277