Annual report pursuant to Section 13 and 15(d)

OPERATING BUSINESS SEGMENT AND INTERNATIONAL OPERATION INFORMATION (Narrative) (Details)

v3.20.4
OPERATING BUSINESS SEGMENT AND INTERNATIONAL OPERATION INFORMATION (Narrative) (Details)
12 Months Ended
Dec. 31, 2020
segment
Segment Reporting Information [Line Items]  
Number of business segments 4
NSP Americas; NSP Russia, Central and Eastern Europe; and NSP China  
Segment Reporting Information [Line Items]  
Number of operating segments 3
Synergy WorldWide  
Segment Reporting Information [Line Items]  
Number of operating segments 1