Revenue (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

Total net sales based on the disaggregation criteria described above are as follows:

			Year Ended December 31,
	2019
(In thousands)
Net sales:	Point-in-Time		Over Time		Total
Americas	$	446,703	$	91,976	$	538,679
EMEIA	324,410		79,014		403,424
APAC	376,631		34,481		411,112
Total net sales (1)	$	1,147,744	$	205,471	$	1,353,215
(1) Net sales contain hedging gains and losses, which do not represent revenues recognized from customers. See Note 5 -Derivative instruments and hedging activities of Notes to Consolidated Financial Statements for more information on the impact of our hedging activities on our results of operations

			Year Ended December 31,
	2018
(In thousands)
Net sales:	Point-in-Time		Over Time		Total
Americas	$	451,047	$	87,341	$	538,388
EMEIA	356,070		76,907		432,977
APAC	355,024		32,743		387,767
Total net sales (1)	$	1,162,141	$	196,991	$	1,359,132
(1) Net sales contain hedging gains and losses, which do not represent revenues recognized from customers. See Note 5 -Derivative instruments and hedging activities of Notes to Consolidated Financial Statements for more information on the impact of our hedging activities on our results of operations

Total net sales by the major geographic areas in which we operate, are as follows:

(In thousands)	Years Ended December 31,
	2019		2018		2017 (1)
Net sales:
Americas	$	538,679	$	538,388	$	504,626
EMEIA	403,424		432,977		408,625
APAC	411,112		387,767		376,135
Total	$	1,353,215	$	1,359,132	$	1,289,386
(1) As discussed in Note 1 - Operations and summary of significant accounting policies of Notes to Consolidated Financial Statements, prior periods have not been adjusted for adoption of ASU 2014-09

Changes in Deferred Revenue

Changes in deferred revenue, current and long-term, during the twelve months ended December 31, 2019 were as follows:

	Amount
	(In thousands)
Deferred Revenue at January 1, 2019	$	159,924
Deferral of revenue billed in current period, net of recognition	116,842
Recognition of revenue deferred in prior periods	(111,417		)
Foreign currency translation impact	(424		)
Balance as of December 31, 2019	$	164,925