Goodwill (Details) $ in Thousands	9 Months Ended
	Dec. 31, 2015 USD ($)
Goodwill [Roll Forward]
Balance — March 31, 2015	$ 290,651
Adjustments	(6,932)
Effects of foreign currency exchange rates	(1,040)
Balance — December 31, 2015	282,679
North American OTC Healthcare
Goodwill [Roll Forward]
Balance — March 31, 2015	263,411
Adjustments	(6,932)
Effects of foreign currency exchange rates	0
Balance — December 31, 2015	256,479
International OTC Healthcare
Goodwill [Roll Forward]
Balance — March 31, 2015	20,440
Adjustments	0
Effects of foreign currency exchange rates	(1,040)
Balance — December 31, 2015	19,400
Household Cleaning
Goodwill [Roll Forward]
Balance — March 31, 2015	6,800
Adjustments	0
Effects of foreign currency exchange rates	0
Balance — December 31, 2015	$ 6,800