Goodwill and Intangible Assets - Generic (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Mar. 31, 2017
Schedule of changes in the carrying amount of goodwill
Goodwill, Balance	$ 333,611	$ 333,611
Goodwill, Balance		339,566
Generic Pharmaceuticals
Schedule of changes in the carrying amount of goodwill
Goodwill, Balance	333,611	333,611
Measurement-period adjustments		5,955
Goodwill, Balance		$ 339,566
Measurement-period adjustment to returns reserve	$ 6,000