Revenue Recognition (Analysis of the Chargeback Provision) (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Beginning balance	$ 21,644	$ 22,423	$ 22,423
Provision for chargebacks and rebates	69,424	58,001
Credits and payments issued to third parties	(72,625)	(61,704)
Ending balance	18,443	$ 18,720	21,644
Accounts Receivable, Net
Provision for chargebacks and rebates	14,100		15,400
Accounts Payable and Accrued Liabilities
Provision for chargebacks and rebates	$ 4,300		$ 6,200