Note 5 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Total financial assets	$ 3,974	$ 3,760
Fair Value, Inputs, Level 1 [Member]
Total financial assets	3,385	3,324
Fair Value, Inputs, Level 2 [Member]
Total financial assets	589	436
Fair Value, Inputs, Level 3 [Member]
Total financial assets	0	0
Deferred Compensation Plan [Member]
Deferred compensation plan	3,742	3,722
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Deferred compensation plan	3,385	3,324
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Deferred compensation plan	357	398
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Deferred compensation plan	0	0
Foreign Exchange Forward [Member]
Derivative assets	181
Derivative liabilities	(94)	(277)
Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative assets	0
Derivative liabilities	0	0
Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative assets	181
Derivative liabilities	(94)	(277)
Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative assets	0
Derivative liabilities	0	0
Interest Rate Swap [Member]
Derivative assets	51	38
Interest Rate Swap [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative assets	0	0
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative assets	51	38
Interest Rate Swap [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative assets	$ 0	$ 0