Revenues

3 Months Ended

Mar. 31, 2020

Revenue from Contract with Customer [Abstract]

Revenue from the sale of Advanced Products represents the sum of third-party sales of the products sold under the Advanced Products line, which were sold under the former Picor and VI Chip operating segments during periods prior to the second quarter of 2019. Revenue from the sale of Brick Products represents the sum of third-party sales of the products sold under the Brick Products line, which were also sold under the former Brick Business Unit operating segment, inclusive of such sales of our Vicor Custom Power and Vicor Japan Company, Ltd. subsidiaries.

The following tables present the Company’s net revenues disaggregated by geography based on the locati

n of the customer, by product line (in thousands):


	Three Months Ended March 31, 2020
	Brick Products		Advanced Products		Total
United States	$	25,970	$	7,597	$	33,567
Europe		4,568		879		5,447
Asia Pacific		13,656		9,376		23,032
All other		1,323		32		1,355

	$	45,517	$	17,884	$	63,401


	Three Months Ended March 31, 2019
	Brick Products		Advanced Products		Total
United States	$	22,292	$	6,949	$	29,241
Europe		6,009		986		6,995
Asia Pacific		17,111		10,900		28,011
All other		1,213		265		1,478

	$	46,625	$	19,100	$	65,725

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


	Three Months Ended March 31, 2020
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and non-stocking distributors	$	35,739	$	14,767	$	50,506
Stocking distributors, net of sales allowances		9,622		3,062		12,684
Non-recurring engineering		156		37		193
Other		—		18		18

	$	45,517	$	17,884	$	63,401


	Three Months Ended March 31, 2019
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and non-stocking distributors	$	39,948	$	14,766	$	54,714
Stocking distributors, net of sales allowances		6,117		3,166		9,283
Non-recurring engineering		548		1,125		1,673
Royalties		12		24		36
Other		—		19		19

	$	46,625	$	19,100	$	65,725

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


	March 31, 2020			December 31, 2019			Change
Accounts receivable	$	41,279		$	38,115		$	3,164
Short-term deferred revenue and customer prepayments		(6,753	)		(5,507	)		(1,246	)
Long-term deferred revenue		(974	)		(1,054	)		80
Deferred expenses		2,023			1,897			126
Sales allowances		(781	)		(741	)		(40	)

The increase in accounts receivable was primarily due to an increase in net revenues of approximately $5,634,000 in March 2020 compared to December 2019.

Deferred expenses are included in Other current assets in the accompanying Condensed Consolidated Balance Sheets.

The Company records deferred revenue, which represents a contract liability, when cash payments are received or due in advance of performance under a contract with a customer. The Company recognized revenue of approximately $36,000 for the three months ended March 31, 2020, and $0 for the three months ended March 31, 2019, respectively, that was included in deferred revenue at the beginning of each respective period.