1. Company Overview Significant Customers (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Company's customers that individually comprised greater than 10% of total gross product sales
Percentage of gross product sales	90.00%	92.00%	90.00%	94.00%
Percentage of accounts receivable, net	90.00%		90.00%		92.00%
McKesson Corporation
Company's customers that individually comprised greater than 10% of total gross product sales
Percentage of gross product sales	34.00%	35.00%	34.00%	36.00%
Percentage of accounts receivable, net	31.00%		31.00%		36.00%
Amerisource Bergen Drug Corporation
Company's customers that individually comprised greater than 10% of total gross product sales
Percentage of gross product sales	33.00%	31.00%	31.00%	32.00%
Percentage of accounts receivable, net	29.00%		29.00%		28.00%
Cardinal Health Inc
Company's customers that individually comprised greater than 10% of total gross product sales
Percentage of gross product sales	23.00%	26.00%	25.00%	26.00%
Percentage of accounts receivable, net	30.00%		30.00%		28.00%