Note 15 - Share-based Compensation - Assumptions (Details) - Share-Based Payment Arrangement, Option [Member] - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Risk-free interest rate	0.82%	0.32%
Expected dividend yield	2.15%	1.18%
Expected volatility of Rocky's common stock	54.70%	51.87%
Expected option term (years) (Year)	5 years 1 month 6 days	5 years 7 months 6 days
Weighted-average grant date fair value per share (in dollars per share)	$ 12.85	$ 12.16