Revenue

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Revenues

Revenue from the sale of Advanced Products represents the sum of third-party sales of the former Picor and VI Chip operating segments for periods prior to the second quarter of 2019. Revenue from the sale of Brick Products represents the sum of third-party revenues of the former Brick Business Unit operating segment, inclusive of such sales of our Vicor Custom Power and Vicor Japan Company, Ltd. subsidiaries. See Note 14 for a discussion of changes to the Company’s segment reporting.

The following tables present the Company’s net revenues disaggregated by geography based on the location of the customer, by product line (in thousands):


	Three Months Ended June 30, 2019
	Brick Products		Advanced Products		Total
United States	$	25,732		5,323	$	31,055
Europe		6,374		1,642		8,016
Asia Pacific		15,287		7,843		23,130
All other		612		542		1,154

	$	48,005	$	15,350	$	63,355


	Six Months Ended June 30, 2019
	Brick Products		Advanced Products		Total
United States	$	48,024		12,272	$	60,296
Europe		12,383		2,628		15,011
Asia Pacific		32,398		18,743		51,141
All other		1,825		807		2,632

	$	94,630	$	34,450	$	129,080

	Three Months Ended June 30, 2018
	Brick Products		Advanced Products		Total
United States	$	18,295		8,124	$	26,419
Europe		4,877		1,275		6,152
Asia Pacific		23,876		16,387		40,263
All other		1,301		61		1,362

	$	48,349	$	25,847	$	74,196


	Six Months Ended June 30, 2018
	Brick Products		Advanced Products		Total
United States	$	35,286		16,756	$	52,042
Europe		9,602		1,923		11,525
Asia Pacific		42,087		31,532		73,619
All other		2,011		268		2,279

	$	88,986	$	50,479	$	139,465

The following tables present the Company’s net revenues disaggregated by the category of revenue, by product line (in thousands):


	Three Months Ended June 30, 2019
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and non-stocking distributors	$	40,843		12,184	$	53,027
Stocking distributors, net of sales allowances		7,111		2,918		10,029
Non-recurring engineering		51		230		281
Royalties		—		—		—
Other		—		18		18

	$	48,005	$	15,350	$	63,355


	Six Months Ended June 30, 2019
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and non-stocking distributors	$	80,791		26,950	$	107,741
Stocking distributors, net of sales allowances		13,228		6,083		19,311
Non-recurring engineering		599		1,355		1,954
Royalties		12		24		36
Other		—		38		38

	$	94,630	$	34,450	$	129,080

	Three Months Ended June 30, 2018
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and non-stocking distributors	$	43,404		23,130	$	66,534
Stocking distributors, net of sales allowances		4,735		2,208		6,943
Non-recurring engineering		197		465		662
Royalties		13		26		39
Other		—		18		18

	$	48,349	$	25,847	$	74,196


	Six Months Ended June 30, 2018
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and non-stocking distributors	$	78,878		44,416	$	123,294
Stocking distributors, net of sales allowances		9,698		5,151		14,849
Non-recurring engineering		372		800		1,172
Royalties		38		76		114
Other		—		36		36

	$	88,986	$	50,479	$	139,465

The following table presents the changes in certain contract assets and (liabilities) (in thousands):


	June 30, 2019			December 31, 2018			Increase (decrease)
Accounts receivable	$	38,537		$	43,673		$	(5,136	)
Deferred revenue		(5,232	)		(3,820	)		(1,412	)
Deferred expenses		1,216			501			715
Customer prepayments		(1,349	)		(1,250	)		(99	)
Sales allowances		(640	)		(548	)		(92	)

The decrease in accounts receivable was primarily due to a decrease in net revenues in the second quarter of 2019 compared to the fourth quarter of 2018.

Deferred expenses are included in Other current assets, and customer prepayments are included in Deferred revenue, in the accompanying Condensed Consolidated Balance Sheets, respectively.