Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (Details)

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VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Reserve for bad debts and allowances [Member]      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balances at beginning of period $ 2,799 $ 2,735 $ 1,687
Charged to costs and expenses 574 1,657 1,665
Charged to other accounts
Charged to income 2,020 1,593 617
Charged to other accounts
Balances at end of period 1,353 2,799 2,735
Valuation allowances on deferred tax assets [Member]      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balances at beginning of period 152,659 152,062 201,376
Charged to costs and expenses 597 22,998
Charged to other accounts
Charged to income 65,572
Charged to other accounts 888 6,740
Balances at end of period $ 151,771 $ 152,659 $ 152,062