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Note 8 - OMIDRIA Royalty Obligation (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Schedule of Royalty Obligation [Table Text Block]

Balance at December 31, 2022		$	126,278
Principal payments			(1,152	)
Balance at December 31, 2023		$	125,126

Maximum Scheduled Principal and Interest Payments of Royalty Obligation [Table Text Block]

										*Total*
		*Principal*				*Interest*				*Annual Cap*
		(In thousands)
2024		$	8,576			$	11,424			$	20,000
2025			14,641				10,359				25,000
2026			16,081				8,919				25,000
2027			17,664				7,336				25,000
2028			19,402				5,598				25,000
Thereafter			48,762				4,988				53,750
Total scheduled payments		$	125,126			$	48,624			$	173,750