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Note 7 - Capital Stock (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Common Stock Outstanding Roll Forward [Table Text Block]

($ in thousands, except per share amounts)
			*Weighted*
			*Average*
			*Price*
			*Received*								*Net*
Type of Offering	*Period*		*Per Share(1)*				*Shares*				*Proceeds(2)*
2022
At the Market Offering Program⁽³⁾	First Quarter		$	-				-			$	-
At the Market Offering Program⁽³⁾	Second Quarter			-				-				-
At the Market Offering Program⁽³⁾	Third Quarter			-				-				-
At the Market Offering Program⁽³⁾	Fourth Quarter			10.45				3,885,048				40,580
								3,885,048			$	40,580
2021
At the Market Offering Program⁽³⁾	First Quarter		$	25.50				61,610			$	1,572
Follow-on Offerings	First Quarter			26.55				3,588,000				95,336
At the Market Offering Program⁽³⁾	Second Quarter			27.00				4,617,418				124,746
At the Market Offering Program⁽³⁾	Third Quarter			24.70				7,163,668				177,007
At the Market Offering Program⁽³⁾	Fourth Quarter			24.34				4,734,940				115,398
								20,165,635			$	514,059

Dividends Declared [Table Text Block]

(in thousands, except per share amounts)
Year		*Per Share Amount*				*Total*
2013		$	6.975			$	4,662
2014			10.800				22,643
2015			9.600				38,748
2016			8.400				41,388
2017			8.400				70,717
2018			5.350				55,814
2019			4.800				54,421
2020			3.950				53,570
2021			3.900				97,601
2022			2.475				87,906
2023 YTD⁽¹⁾			0.320				12,540
Totals		$	64.970			$	540,010