Accounts Payable and Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Payables and Accruals [Abstract]

Carrying Value of Accounts Payable and Accrued Liabilities

The carrying values of accounts payable and accrued liabilities were as follows:

	December 31,
	2017		2016
	(In thousands)
Accounts payable	$	376,277	$	258,203
Current deferred revenue	90,639		80,503
Wages, severance and related taxes	57,633		76,157
Accrued rebates	38,025		33,071
Employee benefits	25,406		24,395
Accrued interest	22,019		27,202
Other (individual items less than 5% of total current liabilities)	68,929		69,012
Accounts payable and accrued liabilities	$	678,928	$	568,543