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Note 2 - Acquisitions and Dispositions (Details) - Purchase Price Allocation - Amega (USD $) |  |  |  | 0 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2012 | Nov. 06, 2013 Amega Scientific Corporation [Member]
Note 2 - Acquisitions and Dispositions (Details) - Purchase Price Allocation - Amega [Line Items] |  |  |  |
Cash consideration |  |  |  | $ 11,268,000
Holdback payment liability |  |  |  | 1,000,000
Contingent consideration liability | 1,620,000 | 2,140,000 |  | 500,000
Aggregate consideration |  |  |  | 12,768,000
Total purchase price allocation |  |  |  | 12,768,000
Accounts receivable, net |  |  |  | 663,000
Inventories, net |  |  |  | 410,000
Prepaid expenses and other |  |  |  | 11,000
Property, plant and equipment, net |  |  |  | 115,000
Intangibles, net |  |  |  | 5,838,000
Goodwill | 37,866,000 | 23,640,000 | 14,450,000 | 6,827,000
Accrued salaries and payroll taxes |  |  |  | (53,000)
Unearned revenues |  |  |  | $ (1,043,000)

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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- Definition Amount of deferred revenue expected to be recognized as such within one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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