Note 8 - Per Share Data - Antidilutive Securities Excluded from Computation (Details) - shares		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Antidilutive securities (in shares)		40,075	59,312	51,518	42,238
Share-Based Payment Arrangement, Option [Member]
Antidilutive securities (in shares)			240,006		232,873
Restricted Stock Units (RSUs) [Member]
Antidilutive securities (in shares)	[1]		486,635		404,240

[1] For the three months ended September 30, 2023, the total includes a weighted average of 59,312 units which were settled in cash. For the nine months ended September 30, 2023, the total includes a weighted average of 42,238 units which were settled in cash.