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Goodwill (Narrative) (Details)		1 Months Ended	3 Months Ended					12 Months Ended
	Sep. 03, 2014 USD ($)	Dec. 31, 2014 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2016 USD ($) acquisition unit	Mar. 31, 2015 USD ($) acquisition	Mar. 31, 2014 USD ($)	Feb. 05, 2016 USD ($)	Apr. 30, 2014 USD ($)	Jul. 01, 2013 USD ($)	Mar. 31, 2013 USD ($)
Goodwill [Line Items]
Goodwill				$ 290,651,000				$ 360,191,000	$ 290,651,000	$ 190,911,000				$ 167,546,000
Number of business acquisitions | acquisition								2	2
Gain on sale of asset				$ 0	$ 1,133,000	$ 0	$ 0	$ 0	$ 1,133,000	$ 0
Goodwill impairment charge								$ 0	$ 0
Reporting unit, fair value in excess of carrying amount (percent)								76.40%
Number of reporting units with fair value exceeding carrying value by less than 10% | unit								0
Comet Brand
Goodwill [Line Items]
Gain on sale of asset		$ 1,300,000
Care Pharma
Goodwill [Line Items]
Goodwill													$ 23,122,000
Insight Pharmaceuticals Corporation
Goodwill [Line Items]
Goodwill	$ 96,323,000
Goodwill, post-closing inventory and apportionment adjustment	$ (7,200,000)		$ 300,000
Hydralyte
Goodwill [Line Items]
Goodwill												$ 1,224,000
DenTek Oral Care, Inc.
Goodwill [Line Items]
Goodwill											$ 76,529,000

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