2. Significant Customers (Details 1)	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Accounts Receivable
Cardinal Health, Inc.	38.00%	31.00%
McKesson Corporation	30.00%	29.00%
AmerisourceBergen Drug Corporation	23.00%	27.00%
Total	91.00%	87.00%