Segments and Major Customers (Tables)

12 Months Ended

Dec. 31, 2018

Concentration Risk

Reported segment revenues, and reported segment operating income (loss)

The tables below present reported segment operating income (loss) for the years ended December 31, 2018, 2017 and 2016:

	For the Year Ended December 31, 2018
	MID		RSD		Other			Total
	(In thousands)
Revenues	$	168,528	$	60,232	$	2,441		$	231,201
Segment operating expenses	94,999		53,177		14,560			162,736
Segment operating income (loss)	$	73,529	$	7,055	$	(12,119	)	$	68,465
Reconciling items								(155,432		)
Operating loss								$	(86,967	)
Interest and other income (expense), net								16,339
Loss before income taxes								$	(70,628	)

	For the Year Ended December 31, 2017
	MID		RSD		Other			Total
	(In thousands)
Revenues	$	280,704	$	96,663	$	15,729		$	393,096
Segment operating expense	86,044		50,010		33,860			169,914
Segment operating income (loss)	$	194,660	$	46,653	$	(18,131	)	$	223,182
Reconciling items								(168,775		)
Operating income								$	54,407
Interest and other income (expense), net								(13,418		)
Income before income taxes								$	40,989

	For the Year Ended December 31, 2016
	MID		RSD		Other			Total
	(In thousands)
Revenues	$	239,843	$	76,175	$	20,579		$	336,597
Segment operating expenses	68,460		51,855		30,397			150,712
Segment operating income (loss)	$	171,383	$	24,320	$	(9,818	)	$	185,885
Reconciling items								(152,243		)
Operating income								$	33,642
Interest and other income (expense), net								(11,005		)
Income before income taxes								$	22,637

The Company’s CODM does not review information regarding assets on an operating segment basis. Additionally, the Company does not record intersegment revenue or expense.

Revenue from external customer by geographic regions

Revenue from customers in the geographic regions based on the location of contracting parties is as follows:

	Years Ended December 31,
	2018		2017		2016
	(In thousands)
USA	$	129,567	$	165,263	$	121,209
Taiwan	21,749		9,953		6,439
South Korea	13,421		115,811		129,542
Japan	23,222		23,378		30,215
Europe	15,668		22,597		16,031
Canada	4,960		4,373		3,478
Singapore	19,140		22,554		17,908
Asia-Other	3,474		29,167		11,775
Total	$	231,201	$	393,096	$	336,597

Accounts Receivable [Member]

Concentration Risk

Schedule of customer accounts representing 10% or more than 10% of total revenue

Accounts receivable from the Company's major customers representing 10% or more of total accounts receivable at December 31, 2018 and December 31, 2017, respectively, was as follows:

	As of December 31,
Customer	2018		2017
Customer 1 (MID reportable segment)	12	%	*
Customer 2 (Other segment)	*		12	%
Customer 3 (MID reportable segment)	39	%	*
Customer 4 (MID and RSD reportable segment)	*		13	%
Customer 5 (RSD reportable segment)	*		11	%

_________________________________________

*    Customer accounted for less than 10% of total accounts receivable in the period

Sales, net

Concentration Risk

Schedule of customer accounts representing 10% or more than 10% of total revenue

Revenue from the Company’s major customers representing 10% or more of total revenue for the years ended December 31, 2018, 2017 and 2016 were as follows:

	Years Ended December 31,
	2018		2017		2016
Customer A (MID and RSD reportable segments)	*		17	%	19	%
Customer B (MID reportable segment)	*		13	%	20	%
Customer C (MID reportable segment)	*		13	%	13	%
Customer D (MID reportable segment)	15	%	*		*
Customer E (MID and RSD reportable segments)	11	%	*		*