Segment and Major Customer Information (Detail) - Schedule of segment reporting information by segment (USD $) In Thousands, unless otherwise specified	3 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Net revenues	$ 40,206	$ 43,992
Gross profit	17,493	21,617
Gross margin	44.00%	49.00%
Metrology Solutions [Member]
Net revenues	25,878	29,842
Gross profit	14,335	17,370
Gross margin	55.00%	58.00%
Optical Systems [Member]
Net revenues	14,328	14,150
Gross profit	$ 3,158	$ 4,247
Gross margin	22.00%	30.00%

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.

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

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