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Note 13 - Commitments and Contingencies (Details Textual) - USD ($)		1 Months Ended				6 Months Ended	12 Months Ended
	Nov. 06, 2013	Feb. 28, 2018	Nov. 30, 2017	Oct. 31, 2015	Nov. 30, 2014	Sep. 30, 2017	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability							$ (905,000)	$ (9,554,000)	$ (2,058,000)
Business Combination, Subsequent Adjustment to Initial Contingent Consideration Liability							$ 300,000
PCD [Member]
Business Acquisition, Earn Out Period for Determination of Contingent Consideration							3 years
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low							$ 0
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High							1,500,000
Business Combination, Contingent Consideration, Liability, Total							300,000
Business Combination, Payment of Contingent Consideration			$ 450,000						150,000
PCD [Member] | Other Expense, Net [Member]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability								$ 450,000
Business Combination, Subsequent Adjustment to Initial Contingent Consideration Liability						$ 300,000
PCD [Member] | Minimum [Member]
Business Acquisition, Revenue Required in Three Years Subsequent to Acquisition for Payment of Contingent Consideration							9,900,000
PCD [Member] | Maximum [Member]
Business Acquisition, Revenue Required in Three Years Subsequent to Acquisition for Payment of Contingent Consideration							$ 12,600,000
Amega Scientific Corporation [Member]
Business Acquisition, Earn Out Period for Determination of Contingent Consideration	3 years
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low	$ 0
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	10,000,000
Business Combination, Contingent Consideration, Liability, Total	$ 500,000
Business Acquisition, Agreement Holdback, Payment Period from Effective Date Less Any Losses Incurred by Buyer Payable To Seller	3 years
Amega Scientific Corporation [Member] | Minimum [Member]
Business Acquisition, Revenue Required in Three Years Subsequent to Acquisition for Payment of Contingent Consideration	$ 31,625,000
Amega Scientific Corporation [Member] | Maximum [Member]
Business Acquisition, Revenue Required in Three Years Subsequent to Acquisition for Payment of Contingent Consideration	$ 43,500,000
Civil Class Action for Violation of TCPA [Member]
Loss Contingency, Damages Sought, Value Per Violation		$ 500
Loss Contingency, Damages Sought, Value Per Knowing and Willful Violation		$ 1,500
Anthony Amato and Amega Scientific Corporation [Member]
Loss Contingency, Damages Sought, Value					$ 10,000,000
Loss Contingency Expected Immeditate Accelaration of Stock Option Granted					10,000
Payments for Legal Settlements				$ 3,165,000
Litigation Settlement, Insurance Covered				415,000
Loss Contingency Accrual, Ending Balance				$ 1,041,000
Anthony Amato and Amega Scientific Corporation [Member] | Improperly with holding Amount [Member]
Loss Contingency, Damages Sought, Value					704,065.86
Anthony Amato and Amega Scientific Corporation [Member] | General and Administrative Expense [Member]
Gain (Loss) Related to Litigation Settlement, Total									$ 1,709,000
Anthony Amato and Amega Scientific Corporation [Member] | Minimum [Member] | Lost Future Earnings and Punitive Damages [Member]
Loss Contingency, Damages Sought, Value					$ 500,000

X

- 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.

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X

- Definition

Represents the earn-out period over which the revenue growth will be assessed to determine the contingent consideration payable.

+ References

No definition available.

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- Definition

Represents the cumulative revenue required based upon a sliding scale of three years subsequent to the acquisition for payment of contingent consideration.

+ References

No definition available.

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- Definition

Amount of contingent consideration paid by the acquirer.

+ References

No definition available.

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- Definition

Amount of adjustment to the initial contingent consideration liability recorded upon the commencement of a business combination.

+ References

No definition available.

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- Definition

Amount of a litigation settlement that covered by insurance.

+ References

No definition available.

+ Details

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X

- Definition

The value (monetary amount) of the award for each knowing and willful violation the plaintiff seeks in the legal matter.

+ References

No definition available.

+ Details

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- Definition

The value (monetary amount) of the award for each violation the plaintiff seeks in the legal matter.

+ References

No definition available.

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- Definition

The plaintiffs seeks an immediate acceleration of the stock options which was granted upon initial employment.

+ References

No definition available.

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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

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- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 1
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- Definition

For contingent consideration arrangements and indemnification assets recognized in connection with a business combination, this element represents an estimate of the low-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

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-Publisher FASB
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-Section 25
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- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

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+ References

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- Definition

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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