Borrowings (Tables) - Debt Instrument [Domain]

3 Months Ended

Mar. 31, 2019

Schedule Of Fed Funds Purchased And Assets Sold Under Agreements To Repurchase Table [Text Block]

(In thousands)	March 31, 2019		December 31, 2018
Assets sold under agreements to repurchase	$	200,871	$	281,529
Total assets sold under agreements to repurchase	$	200,871	$	281,529

Schedule of Repurchase Agreements [Table Text Block]

		March 31, 2019		December 31, 2018
			Repurchase		Repurchase
(In thousands)			liability		liability
U.S. Treasury securities
	Within 30 days	$	31,494	$	138,689
	After 30 to 90 days		14,687		79,374
	After 90 days		123,896		19,558
Total U.S. Treasury securities			170,077		237,621
Obligations of U.S. government sponsored entities
	After 30 to 90 days		-		6,055
Total obligations of U.S. government sponsored entities			-		6,055
Mortgage-backed securities
	Within 30 days		27,146		6,859
	After 90 days		-		20,465
Total mortgage-backed securities			27,146		27,324
Collateralized mortgage obligations
	Within 30 days		3,648		10,529
Total collateralized mortgage obligations			3,648		10,529
Total		$	200,871	$	281,529

Schedule of Notes Payable [Table Text Block]

(In thousands)		March 31, 2019		December 31, 2018
Advances with the FHLB with maturities ranging from 2019 through 2029 paying interest at
	monthly fixed rates ranging from 0.95% to 4.19 %	$	482,820	$	524,052
Advances with the FHLB paying interest monthly
	at a floating rate		-		13,000
Advances with the FHLB maturing on 2019 paying interest quarterly
	at a floating rate of 0.24% over the 3 month LIBOR		14,430		19,724
Unsecured senior debt securities maturing on 2023 paying interest semiannually at a
	fixed rate of 6.125%, net of debt issuance costs of $5,644		294,356		294,039
Junior subordinated deferrable interest debentures (related to trust preferred securities)
	with maturities ranging from 2033 to 2034 with fixed interest rates ranging from
	6.125% to 6.7%, net of debt issuance costs of $416		384,882		384,875
Capital lease obligations			-		20,412
Total notes payable		$	1,176,488	$	1,256,102

Maturity Distribution Of Debt Securities [Text Block]

	Assets sold under			Short-term
(In thousands)	agreements to repurchase			borrowings	Notes payable		Total
2019	$	138,756	$	42	$	150,622	$	289,420
2020		62,115		-		140,149		202,264
2021		-		-		20,040		20,040
2022		-		-		103,147		103,147
2023		-		-		297,617		297,617
Later years		-		-		464,913		464,913
Total borrowings	$	200,871	$	42	$	1,176,488	$	1,377,401