Summary of Revenue and Operating Results of Astromec Included in Discontinued Operations (Detail) (Astromec, USD $)	3 Months Ended	9 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Astromec
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	$ 43,000	$ 513,000	$ 135,000	$ 2,389,000
Income (loss) before provision for (benefit from) income taxes	$ 33,000	$ (209,000)	$ 111,000	$ (72,000)

Amount of operating income or loss attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration