Note 9 - Fair Value Measurements - Assets and Liabilities Measured At Fair Value On a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Total fair value of assets measured on a recurring basis	$ 1,823	$ 1,388
Total fair value of liabilities measured on a recurring basis	566	307
Foreign Exchange Contract [Member]
Derivate asset	1,823	1,388
Derivate liability	22	276
Interest Rate Swap [Member]
Derivate liability	544	31
Fair Value, Inputs, Level 1 [Member]
Total fair value of assets measured on a recurring basis	0	0
Total fair value of liabilities measured on a recurring basis	0	0
Fair Value, Inputs, Level 1 [Member] | Foreign Exchange Contract [Member]
Derivate asset	0	0
Derivate liability	0	0
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member]
Derivate liability	0	0
Fair Value, Inputs, Level 2 [Member]
Total fair value of assets measured on a recurring basis	1,823	1,388
Total fair value of liabilities measured on a recurring basis	566	307
Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Contract [Member]
Derivate asset	1,823	1,388
Derivate liability	22	276
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Derivate liability	544	31
Fair Value, Inputs, Level 3 [Member]
Total fair value of assets measured on a recurring basis	0	0
Total fair value of liabilities measured on a recurring basis	0	0
Fair Value, Inputs, Level 3 [Member] | Foreign Exchange Contract [Member]
Derivate asset	0	0
Derivate liability	0	0
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member]
Derivate liability	$ 0	$ 0