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Note 16 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 02, 2020	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Sep. 30, 2021	Dec. 31, 2018
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)				70,000	86,462
Gross Proceeds from Stock Options Exercised				$ 170	$ 170
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total (in shares)				243,998	201,560
Stock Repurchased During Period, Value		$ 557	$ 441
Common Stock, Dividends, Per Share, Declared (in dollars per share)				$ 0	$ 0
Share Buyback Program [Member]
Stock Repurchase Program, Authorized Amount							$ 5,000
Stock Repurchased and Retired During Period, Shares (in shares)				259,310	0
Stock Repurchased During Period, Value				$ 998
Assets Acquisition of Amika Mobile Corporation [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares, Each Anniversaries (in shares)	191,267
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	573,801			139,128
Business Acquisition, Share Price (in dollars per share)	$ 5.98
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 3,431
Assets Acquisition of Amika Mobile Corporation [Member] | Former Owner of Amika Mobile [Member]
Stock Issued During Period, Shares, Acquisitions (in shares)				69,564		365,109

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Aggregate dividends declared during the period for each share of common stock outstanding.

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