Note 13 - Revenue Recognition - Composition of Revenue From Services (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenue from Contract with Customer, Excluding Assessed Tax	$ 149,952	$ 173,686
Service [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	102,844	126,890
Healthcare Insurers [Member] | Service [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	57,652	74,608
Government Payers [Member] | Service [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	17,155	21,959
Client Payers [Member] | Service [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	25,280	25,687
Self-Pay [Member] | Service [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,757	$ 4,636