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Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2019

Earning Per Common Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Year Ended December 31,
	2019			2018			2017
	(In thousands, except per share data)
Net income	$	53,841		$	84,410		$	52,646
Less: Dividends on preferred stock
Non-convertible preferred stock (Series A, B, and D)		(6,512)			(6,511)			(6,512)
Convertible preferred stock (Series C)		-			(5,513)			(7,350)
Income available to common shareholders	$	47,329		$	72,386		$	38,784
Effect of assumed conversion of the convertible preferred stock		-			5,513			7,350
Income available to common shareholders assuming conversion	$	47,329		$	77,899		$	46,134

Weighted average common shares and share equivalents:
Average common shares outstanding		51,335			45,400			43,939
Effect of dilutive securities:
Average potential common shares-options		384			142			19
Average potential common shares-assuming conversion of convertible preferred stock		-			5,807			7,138
Total weighted average common shares outstanding and equivalents		51,719			51,349			51,096
Earnings per common share - basic	$	0.92		$	1.59		$	0.88
Earnings per common share - diluted	$	0.92		$	1.52		$	0.88