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Note 16 - Subsequent Event (Details Textual) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 01, 2020	Jan. 31, 2021	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Business Combination, Acquisition Related Costs			$ 179,000	$ 291,000	$ 417,000	$ 538,000
SciSafe Holdings, Inc [Member]
Business Combination, Acquisition Related Costs			$ 179,000
SciSafe Holdings, Inc [Member] | Forecast [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)		169,911
SciSafe Holdings, Inc [Member] | Subsequent Event [Member]
Payments to Acquire Businesses, Gross	$ 15,000,000
Stock Issued During Period, Shares, Acquisitions (in shares)	441,472
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	611,383
SciSafe Holdings, Inc [Member] | Subsequent Event [Member] | Maximum [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	626,000

X

- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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- Definition

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