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Subsequent Events (Details) In Millions, unless otherwise specified |  | 1 Months Ended
--- | --- | ---
Apr. 11, 2012 Precision Photonics Corporation [Member] USD ($) | Apr. 30, 2012 ERC [Member] USD ($) | Apr. 30, 2012 ERC [Member] JPY (¥)
Subsequent Event [Line Items] |  |  |
Purchase price paid (in cash) | $ 20.5 | $ 20.0 | ¥ 1,650.0
Annual revenue of entity acquired |  | $ 27.0 | ¥ 2,140.0

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- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=6909870&loc=d3e1392-128463 + Details
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