Segment Information (Schedule of Segment Perfomance Measures by Segment) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Net sales	$ 129,261	$ 111,748
Gross profit	33,734	21,505
Income before income taxes	17,574	7,622
Operating Segments [Member] \| Human Health [Member]
Segment Reporting Information [Line Items]
Net sales	38,694	26,409
Gross profit	11,141	8,103
Income before income taxes	5,535	3,119
Operating Segments [Member] \| Pharmaceutical Ingredients [Member]
Segment Reporting Information [Line Items]
Net sales	48,424	40,608
Gross profit	15,262	6,576
Income before income taxes	11,004	2,553
Operating Segments [Member] \| Performance Chemicals [Member]
Segment Reporting Information [Line Items]
Net sales	42,143	44,731
Gross profit	7,331	6,826
Income before income taxes	3,302	3,085
Unallocated Corporate [Member]
Segment Reporting Information [Line Items]
Income before income taxes	$ (2,267)	$ (1,135)

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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- Definition

This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 10

-Article 5

+ Details

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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- Details

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