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BUSINESS ACQUISITONS - PENDING MERGER (Details) - USD ($)
shares in Thousands, $ in Thousands
12 Months Ended
Nov. 14, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Business Acquisition [Line Items]        
Payments to Acquire Businesses, Net of Cash Acquired   $ 0 $ 46,389 $ 42,951
Eclipse Communications Ltd.        
Business Acquisition [Line Items]        
Shares issued to selling shareholders (in shares) 32,500      
Payments to Acquire Businesses, Net of Cash Acquired $ 324,000      
Eclipse Communications Ltd.        
Business Acquisition [Line Items]        
Proceeds from Sale of Real Estate $ 31,000