Note 5 - Fair Value Measurements - Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 21, 2021	Oct. 06, 2021
Interest Rate Swap [Member]
Interest rate swap	$ 388
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member]
Interest rate swap	0
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Interest rate swap	388
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member]
Interest rate swap	0
Z-Sciences [Member]
Contingent consideration liability	179		$ 200
Z-Sciences [Member] | Fair Value, Inputs, Level 1 [Member]
Contingent consideration liability	0
Z-Sciences [Member] | Fair Value, Inputs, Level 2 [Member]
Contingent consideration liability	0
Z-Sciences [Member] | Fair Value, Inputs, Level 3 [Member]
Contingent consideration liability	179
Acculogic [Member]
Contingent consideration liability	1,435	$ 1,430
Acculogic [Member] | Fair Value, Inputs, Level 1 [Member]
Contingent consideration liability	0
Acculogic [Member] | Fair Value, Inputs, Level 2 [Member]
Contingent consideration liability	0
Acculogic [Member] | Fair Value, Inputs, Level 3 [Member]
Contingent consideration liability	$ 1,435