Note 16 - Stockholders' Equity - Summary of Changes in Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Balance	$ 40,553	$ 33,812	$ 47,604	$ 50,393	$ 33,812	$ 50,393	$ 50,393
Share-based compensation expense	524	446	513	420
Issuance of common stock upon exercise of stock options, net (in shares)					0	69,679
Issuance of common stock upon offering, net of issuance costs		10,449
Issuance of common stock upon exercise of stock options, net			54	32
Issuance of common stock upon vesting of restricted stock units (in shares)					232,387	233,812
Issuance of common stock upon vesting of restricted stock units	0	0	(2)	0
Stock Issued During Period, Value, Acquisitions		1,924
Release of obligation to issue common stock		0		0
Accumulated other comprehensive loss	(59)	119	81	266
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock	158	527
Net loss	(6,938)	(6,724)	(3,403)	(3,507)	$ (13,662)	$ (6,910)
Issuance of common stock upon cashless exercise of stock options, net			0
Shares retained for payment of taxes in connection with settlement of restricted stock units	(12)		(45)
Balance	34,882	$ 40,553	$ 44,802	$ 47,604	$ 34,882	$ 44,802	$ 33,812
Contingent Consideration Liability [Member]
Stock Issued During Period, Value, Acquisitions	$ 656
Common Stock [Member]
Balance (in shares)	44,027,121	37,211,071	36,713,471	36,611,240	37,211,071	36,611,240	36,611,240
Balance	$ 440	$ 372	$ 367	$ 366	$ 372	$ 366	$ 366
Share-based compensation expense	$ 0	$ 0	$ 0
Issuance of common stock upon offering, net of issuance costs (in shares)		5,750,000
Issuance of common stock upon exercise of stock options, net (in shares)			33,765	20,000
Issuance of common stock upon offering, net of issuance costs		$ 57
Issuance of common stock upon exercise of stock options, net			$ 1	$ 0
Issuance of common stock upon vesting of restricted stock units (in shares)	229,233	10,000	232,761	12,667
Issuance of common stock upon vesting of restricted stock units	$ 2	$ 0	$ 2	$ 0
Stock Issued During Period, Shares, Acquisitions		986,486
Release of obligation to issue common stock (in shares)		69,564		69,564
Stock Issued During Period, Value, Acquisitions		$ 10
Release of obligation to issue common stock		1		$ 1
Accumulated other comprehensive loss	0	0	0	0
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock	0	0
Net loss	$ 0	$ 0	$ 0	$ 0
Issuance of common stock upon cashless exercise of stock options, net (in shares)			15,914
Issuance of common stock upon cashless exercise of stock options, net			$ 0
Shares retained for payment of taxes in connection with settlement of restricted stock units (in shares)	(6,846)		(11,616)
Shares retained for payment of taxes in connection with settlement of restricted stock units	$ 0		$ 0
Balance (in shares)	44,485,851	44,027,121	36,984,295	36,713,471	44,485,851	36,984,295	37,211,071
Balance	$ 445	$ 440	$ 370	$ 367	$ 445	$ 370	$ 372
Common Stock [Member] | Contingent Consideration Liability [Member]
Stock Issued During Period, Shares, Acquisitions	236,343
Stock Issued During Period, Value, Acquisitions	$ 3
Additional Paid-in Capital [Member]
Balance	123,725	110,379	109,003	108,551	110,379	108,551	108,551
Share-based compensation expense	524	446	513	420
Issuance of common stock upon offering, net of issuance costs		10,449
Issuance of common stock upon exercise of stock options, net			54	32
Issuance of common stock upon vesting of restricted stock units	0	0	(2)	0
Stock Issued During Period, Value, Acquisitions		1,924
Release of obligation to issue common stock		0		0
Accumulated other comprehensive loss	0	0	0	0
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock	158	527
Net loss	0	0	0	0
Issuance of common stock upon cashless exercise of stock options, net			0
Shares retained for payment of taxes in connection with settlement of restricted stock units	(12)		(45)
Balance	125,051	123,725	109,523	109,003	125,051	109,523	110,379
Additional Paid-in Capital [Member] | Contingent Consideration Liability [Member]
Stock Issued During Period, Value, Acquisitions	656
Retained Earnings [Member]
Balance	(82,786)	(76,062)	(60,873)	(57,366)	(76,062)	(57,366)	(57,366)
Share-based compensation expense	0	0	0	0
Issuance of common stock upon offering, net of issuance costs		0
Issuance of common stock upon exercise of stock options, net			0	0
Issuance of common stock upon vesting of restricted stock units	0	0	0	0
Stock Issued During Period, Value, Acquisitions		0
Release of obligation to issue common stock		0		0
Accumulated other comprehensive loss	0	0	0	0
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock	0	0
Net loss	(6,938)	(6,724)	(3,403)	(3,507)
Issuance of common stock upon cashless exercise of stock options, net			0
Shares retained for payment of taxes in connection with settlement of restricted stock units	0		0
Balance	(89,724)	(82,786)	(64,276)	(60,873)	(89,724)	(64,276)	(76,062)
Retained Earnings [Member] | Contingent Consideration Liability [Member]
Stock Issued During Period, Value, Acquisitions	0
AOCI Attributable to Parent [Member]
Balance	(386)	(505)	(526)	(792)	(505)	(792)	(792)
Share-based compensation expense	0	0	0	0
Issuance of common stock upon offering, net of issuance costs		0
Issuance of common stock upon exercise of stock options, net			0	0
Issuance of common stock upon vesting of restricted stock units	0	0	0	0
Stock Issued During Period, Value, Acquisitions		0
Release of obligation to issue common stock		0
Accumulated other comprehensive loss	(59)	119	81	266
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock	0	0
Net loss	0	0	0
Issuance of common stock upon cashless exercise of stock options, net			0
Shares retained for payment of taxes in connection with settlement of restricted stock units	0		0
Balance	(445)	$ (386)	$ (445)	$ (526)	$ (445)	$ (445)	$ (505)
AOCI Attributable to Parent [Member] | Contingent Consideration Liability [Member]
Stock Issued During Period, Value, Acquisitions	$ 0