Note 1 - Nature of Business and Summary of Significant Accounting Policies - Major Customers (Details) - Customer Concentration Risk [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Revenue Benchmark [Member]
Percent	100.00%	100.00%	100.00%	100.00%
Revenue Benchmark [Member] \| Major Customers [Member]
Percent	46.70%	21.60%	47.50%	40.20%
Revenue Benchmark [Member] \| Other Customer [Member]
Percent	53.30%	78.40%	52.50%	59.80%
Accounts Receivable [Member]
Percent	100.00%	100.00%	100.00%	100.00%
Accounts Receivable [Member] \| Major Customers [Member]
Percent	55.50%	29.50%	55.50%	29.50%
Accounts Receivable [Member] \| Other Customer [Member]
Percent	44.50%	70.50%	44.50%	70.50%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.