Customer, Supplier and Product Concentration (Tables)

12 Months Ended

Dec. 31, 2016

Schedules of Concentration of Risk, by Risk Factor

The following table sets forth the percentage of the Company’s gross and net sales and gross accounts receivable attributable to these three distributors for the periods indicated:



	2016			2015			2014
	Gross Sales	Net Revenue	Gross Accounts Receivable	Gross Sales	Net Revenue	Gross Accounts Receivable	Gross Sales	Net Revenue	Gross Accounts Receivable
Amerisource	29.5%	23.3%	35.6%	28.0%	23.2%	28.8%	38.3%	29.2%	45.4%
Cardinal	15.4%	16.3%	15.1%	19.7%	19.5%	26.1%	15.9%	13.6%	16.9%
McKesson	32.5%	24.2%	33.2%	30.1%	27.3%	27.9%	22.7%	19.1%	22.7%
Combined Total	77.4%	63.8%	83.9%	77.8%	70.0%	82.8%	76.9%	61.9%	85.0%