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Revenue and Accounts Receivable, Net

12 Months Ended

Dec. 31, 2020

Receivables [Abstract]

Revenue and Accounts Receivable, Net

Revenue and Accounts Receivable, Net

Revenue Details

The pattern of revenue recognition was as follows:


			Year Ended December 31,
(In thousands)			2020						2019						2018
Goods and services transferred at a point in time			$	495,033					$	558,361					$	577,085
Goods and services transferred over time			119,647						195,116						103,156
Net sales			$	614,680					$	753,477					$	680,241

Our net sales to external customers by geographic area were as follows:


			Year Ended December 31,
(In thousands)			2020						2019						2018
United States			$	255,651					$	407,291					$	315,214
Asia (excluding the PRC)			117,142						104,324						124,657
Europe			108,185						94,491						85,228
People's Republic of China			88,246						83,677						91,446
Latin America			17,481						30,006						30,954
Other			27,975						33,688						32,742
Total net sales			$	614,680					$	753,477					$	680,241

Specific identification of the customer billing location was the basis used for attributing revenues from external customers to geographic areas.

Net sales to the following customer totaled more than 10% of our net sales:


			Year Ended December 31,
			2020												2019												2018
			$ (thousands)						% of Net Sales						$ (thousands)						% of Net Sales						$ (thousands)						% of Net Sales
Comcast Corporation			$	123,574					20.1		%				$	119,561					15.9		%				$	119,809					17.6		%

Accounts Receivable, Net

Accounts receivable, net were as follows:


			December 31,
(In thousands)			2020						2019
Trade receivables, gross			$	122,828					$	130,888
Allowance for credit losses			(1,412)						(1,492)
Allowance for sales returns			(761)						(623)
Trade receivables. net			120,655						128,773
Other			8,778						10,425
Accounts receivable, net			$	129,433					$	139,198

Allowance for Credit Losses

Changes in the allowance for credit losses were as follows:


(In thousands)			Year Ended December 31,
			2020						2019						2018
Balance at beginning of period			$	1,492					$	1,121					$	1,064
Additions to costs and expenses			332						441						305
Cash receipts			(157)						—						—
Write-offs/Foreign exchange effects			(255)						(70)						(248)
Balance at end of period			$	1,412					$	1,492					$	1,121

Trade receivables associated with these significant customers that totaled more than 10% of our accounts receivable, net were as follows:


			December 31,
			2020												2019
			$ (thousands)						% of Accounts Receivable, Net						$ (thousands)						% of Accounts Receivable, Net
Comcast Corporation			$	19,782					15.3		%				$	—		(1)			—		%	(1)
Dish Network Corporation			$	—		(1)			—		%	(1)			$	14,677					10.5		%

(1) Trade receivables associated with this customer did not total more than 10% of our accounts receivable, net for the indicated period.