ACCOUNTS RECEIVABLE AND RELATED ALLOWANCE FOR DOUBTFUL ACCOUNTS (Tables)

12 Months Ended

Dec. 31, 2018

Receivables [Abstract]

Schedule of accounts receivable balances and reserve for doubtful amount

		Net Accounts Receivable
		December 31,
		2018			2017
		(amounts in thousands)

Accounts receivable		$	359,456		$	346,264
Allowance for doubtful accounts and sales reserve			(16,690)			(4,275)
Accounts receivable, net of allowance for doubtful accounts and sales reserves		$	342,766		$	341,989

Schedule of changes in allowance for doubtful accounts

Changes In Allowance For Doubtful Accounts
					Additions
		Balance At			Charged To			Deductions			Balance At
		Beginning			Costs And			From			End Of
Year Ended		Of Year			Expenses			Reserves			Year
		(amounts in thousands)
December 31, 2018		$	3,885		$	8,909		$	(3,375)		$	9,419
December 31, 2017			2,137			3,715			(1,967)			3,885
December 31, 2016			2,134			1,330			(1,327)			2,137

Schedule of Changes in Allowance for Sales Reserves

Changes in Allowance for Sales Reserves
		Balance At			Additions		Deductions				Balance At
		Beginning			Charged To		From				End Of
Year Ended		Of Year			Revenues		Reserves				Year
		(amounts in thousands)
December 31, 2018		$	390		$	14,254	$		(7,373)		$	7,271
December 31, 2017			-			390			-			390