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Acquisitions and Dispositions (Details) (USD $) |  |  | 0 Months Ended | 1 Months Ended | 0 Months Ended | 3 Months Ended | 6 Months Ended
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Sep. 30, 2013 | Mar. 31, 2013 | May 15, 2012 Bios | May 31, 2012 Bios | Jul. 02, 2013 ST Acquisitions | Sep. 30, 2013 ST Acquisitions | Sep. 30, 2012 ST Acquisitions | Sep. 30, 2013 ST Acquisitions | Sep. 30, 2012 ST Acquisitions
Acquisition |  |  |  |  |  |  |  |  |
Holdback payment period from effective date, less any losses incurred by buyer, payable to seller |  |  |  |  | 1 year |  |  |  |
Earn-out period for determination of contingent consideration |  |  |  | 3 years |  |  |  |  |
Minimum revenue required in three years subsequent to the acquisition for payment of contingent consideration |  |  | $ 22,127,000 |  |  |  |  |  |
Potential undiscounted future payments, low end of range |  |  | 0 |  |  |  |  |  |
Potential undiscounted future payments, high end of range |  |  | 6,710,000 |  |  |  |  |  |
Estimated amount of payment resulting from contingent consideration |  |  | 2,240,000 |  |  |  |  |  |
Cash consideration |  |  | 16,660,000 |  | 1,721,000 |  |  |  |
Contingent purchase price liability |  |  | 2,140,000 |  | 100,000 |  |  |  |
Aggregate consideration |  |  | 18,800,000 |  | 1,821,000 |  |  |  |
The purchase price was allocated as follows: |  |  |  |  |  |  |  |  |
Accounts receivable, net |  |  | 478,000 |  |  |  |  |  |
Inventories, net |  |  | 910,000 |  | 230,000 |  |  |  |
Other current assets |  |  | 28,000 |  |  |  |  |  |
Property, plant and equipment |  |  | 63,000 |  | 7,000 |  |  |  |
Intangible assets |  |  | 8,200,000 |  | 1,005,000 |  |  |  |
Goodwill | 24,219,000 | 23,640,000 | 9,190,000 |  | 579,000 |  |  |  |
Current liabilities |  |  | (69,000) |  |  |  |  |  |
Total purchase price allocation |  |  | 18,800,000 |  | 1,821,000 |  |  |  |
Schedule of pro forma effects of the acquisition on the results of operations |  |  |  |  |  |  |  |  |
Total net revenue |  |  |  |  |  | 12,676,000 | 11,993,000 | 24,311,000 | 22,840,000
Net income |  |  |  |  |  | $ 1,932,000 | $ 2,370,000 | $ 3,969,000 | $ 4,591,000
Net Income per common share: |  |  |  |  |  |  |  |  |
Basic (in dollars per share) |  |  |  |  |  | $ 0.57 | $ 0.71 | $ 1.17 | $ 1.37
Diluted (in dollars per share) |  |  |  |  |  | $ 0.54 | $ 0.67 | $ 1.11 | $ 1.30

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- Definition Represents the holdback payment period from the effective date, less any losses incurred by buyer, payable to seller, as defined in the agreement. + References No definition available. + Details
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- Definition Represents the earn-out period over which the revenue growth will be assessed to determine the contingent consideration payable. + References No definition available. + Details
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- Definition Represents the minimum revenue required in three years subsequent to the acquisition for payment of contingent consideration. + References No definition available. + Details
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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a 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=25497992&loc=d3e1392-128463 + Details
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- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a 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=25497992&loc=d3e1392-128463 + Details
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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=25497992&loc=d3e1392-128463 + Details
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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 liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
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- Definition Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired 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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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired 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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- Definition Amount of liabilities due within one year or within 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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- Definition Amount of intangible assets, excluding goodwill, acquired 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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- Definition The amount of inventory recognized as of 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
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- Definition The amount of property, plant, and equipment recognized as of 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
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- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + 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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