Note 2 - Acquisitions - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Dubin [Member]
Total revenue	$ 9,271	$ 9,361	$ 28,118	$ 27,146
Net income	$ 1,483	$ 4,246	$ 6,120	$ 9,712
Basic earnings per share (in dollars per share)	$ 0.11	$ 0.31	$ 0.45	$ 0.71
Basic weighted average shares outstanding (in shares)	13,751	13,610	13,709	13,598
Diluted earnings per share (in dollars per share)	$ 0.11	$ 0.31	$ 0.45	$ 0.71
Diluted weighted average shares outstanding (in shares)	13,820	13,677	13,777	13,688
Temporary Alternatives [Member]
Total revenue	$ 9,271	$ 9,361	$ 28,118	$ 26,940
Net income	$ 1,483	$ 4,246	$ 6,120	$ 10,595
Basic earnings per share (in dollars per share)	$ 0.11	$ 0.31	$ 0.45	$ 0.78
Basic weighted average shares outstanding (in shares)	13,751	13,610	13,709	13,598
Diluted earnings per share (in dollars per share)	$ 0.11	$ 0.31	$ 0.45	$ 0.78
Diluted weighted average shares outstanding (in shares)	13,820	13,677	13,777	13,688
Northbound [Member]
Total revenue	$ 9,271	$ 9,361	$ 28,118	$ 26,982
Net income	$ 1,483	$ 4,246	$ 6,120	$ 10,793
Basic earnings per share (in dollars per share)	$ 0.11	$ 0.31	$ 0.45	$ 0.79
Basic weighted average shares outstanding (in shares)	13,751	13,610	13,709	13,598
Diluted earnings per share (in dollars per share)	$ 0.11	$ 0.31	$ 0.45	$ 0.79
Diluted weighted average shares outstanding (in shares)	13,820	13,677	13,777	13,688
MRINetwork [Member]
Total revenue	$ 9,271	$ 10,655	$ 28,118	$ 29,548
Net income	$ 1,483	$ 5,674	$ 6,120	$ 13,446
Basic earnings per share (in dollars per share)	$ 0.11	$ 0.42	$ 0.45	$ 0.99
Basic weighted average shares outstanding (in shares)	13,751	13,610	13,709	13,598
Diluted earnings per share (in dollars per share)	$ 0.11	$ 0.41	$ 0.45	$ 0.98
Diluted weighted average shares outstanding (in shares)	13,820	13,677	13,777	13,688