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LEASES - Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Leases [Abstract]    
Cash paid for amounts included in measurement of operating lease liabilities $ 30,613 $ 32,895
Lease liabilities arising from obtaining right-of-use assets $ 7,620 $ 445,142