Revenue Recognition - Product Revenue Allowance and Accrual Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Contractual Adjustments
Balance at Beginning of Period	$ 83,712	$ 105,143	$ 95,221
Provisions related to current period sales	129,402	111,508	147,235
Adjustments related to prior period sales	565	(634)	(4,060)
Payments/returns relating to current period sales	(115,634)	(112,821)	(95,284)
Payments/returns relating to prior period sales	(5,803)	(19,484)	(37,969)
Balance at End of Period	92,242	83,712	105,143
Governmental Rebates
Balance at Beginning of Period	38,064	39,935	47,623
Provisions related to current period sales	17,410	21,904	20,982
Adjustments related to prior period sales	(1,867)	378	976
Payments/returns relating to current period sales	(14,259)	(13,913)	0
Payments/returns relating to prior period sales	(830)	(10,240)	(29,646)
Balance at End of Period	38,518	38,064	39,935
Total
Balance at Beginning of Period	121,776	145,078	142,844
Provisions related to current period sales	146,812	133,412	168,217
Adjustments related to prior period sales	(1,302)	(256)	(3,084)
Payments/returns relating to current period sales	(129,893)	(126,734)	(95,284)
Payments/returns relating to prior period sales	(6,633)	(29,724)	(67,615)
Balance at End of Period	$ 130,760	$ 121,776	$ 145,078