NOTE 20. REVENUES BY PRODUCT CATEGORY AND GEOGRAPHIC REGION AND SIGNIFICANT CONCENTRATIONS

Revenue Information

The following is a summary of our revenues by product category and represents our results from continuing operations (in thousands):

	Year Ended March 31,
Revenues by Product Category	2018		2017		2016
Instruments(1)	$	39,104	$	39,257	$	43,042
Consumables(2)		191,345		175,346		165,025
Other products(3)		14,251		12,617		10,760
Product sales, net		244,700		227,220		218,827
Development and licensing revenue		-		-		74
Total revenues	$	244,700	$	227,220	$	218,901

(1)	Instruments include chemistry analyzers, hematology instruments, VSpro specialty analyzers, i‑STAT analyzers, urinalysis instruments and sediment analyzers.

(2)	Consumables include reagent discs, hematology reagent kits, VSpro specialty cartridges, i‑STAT cartridges, urinalysis tests, and sediment tests and rapid tests.

(3)	Other products include products using the Orbos process and extended maintenance agreements.

The following is a summary of our revenues by geographic region based on customer location and represents our results from continuing operations (in thousands):

	Year Ended March 31,
Revenues by Geographic Region	2018		2017		2016
North America	$	194,660	$	181,853	$	175,019
Europe		36,171		32,764		31,262
Asia Pacific and rest of the world		13,869		12,603		12,620
Total revenues	$	244,700	$	227,220	$	218,901

Significant Concentrations

During fiscal 2018, four distributors, MWI Veterinary Supply, Inc., Henry Schein Animal Health, Patterson Companies, Inc. and Abbott Point of Care, Inc. accounted for 22%, 16% , 11% and 10%, respectively, of our total worldwide revenues.

During fiscal 2017, four distributors, MWI Veterinary Supply, Inc., Henry Schein Animal Health, Patterson Companies, Inc. and Abbott Point of Care, Inc. accounted for 21%, 14% , 11% and 10%, respectively, of our total worldwide revenues.

During fiscal 2016, four distributors, MWI Veterinary Supply, Inc., Henry Schein, Inc., Patterson Companies, Inc. and Abbott Point of Care, Inc. accounted for 20%, 13%, 11% and 10%, respectively, of our total worldwide revenues.

Substantially all of our long-lived assets are located in the United States.