Segment Information (Schedule of Segment Perfomance Measures by Segment) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Segment Reporting Information [Line Items]
Net sales	$ 111,748	$ 101,317
Gross profit	21,505	18,519
Income (loss) before income taxes	7,622	4,739
Human Health[Member]
Segment Reporting Information [Line Items]
Net sales	26,409	22,753
Gross profit	8,103	6,591
Income (loss) before income taxes	3,119	2,551
Pharmaceutical Ingredients[Member]
Segment Reporting Information [Line Items]
Net sales	40,608	42,309
Gross profit	6,576	6,772
Income (loss) before income taxes	2,553	2,880
Performance Chemicals[Member]
Segment Reporting Information [Line Items]
Net sales	44,731	36,255
Gross profit	6,826	5,156
Income (loss) before income taxes	3,085	1,590
Unallocated Corporate [Member]
Segment Reporting Information [Line Items]
Income (loss) before income taxes	$ (1,135)	$ (2,282)

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=6880815&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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