Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2016

Debt Instrument [Line Items]

Schedule of Maturities of Long-term Debt [Table Text Block]

(In thousands)	Consolidated		Parent only
2017	$	152,608	$	152,411
2018	225		—
2019	259		—
2020	59		—
2021	—		—
Thereafter	381,699		381,699
Total	$	534,850	$	534,110

Schedule Of Long-Term Debt

	December 31,
(In thousands)	2016		2015
Junior subordinated debentures related to trust preferred securities	$	—	$	164,950
Subordinated notes	246,550		246,170
Senior notes	287,560		400,334
Capital lease obligations	740		912
Total	$	534,850	$	812,366

Schedule Of Trust Preferred Securities

(In thousands)	December 31, 2016		December 31, 2015		Coupon rate 1	Redemption Date
Amegy Statutory Trust I	$	—	$	51,547	3mL+2.85% (3.38%)	September 17, 2016
Amegy Statutory Trust II	—		36,083		3mL+1.90% (2.22%)	October 7, 2016
Amegy Statutory Trust III	—		61,856		3mL+1.78% (2.29%)	September 15, 2016
Stockmen’s Statutory Trust II	—		7,732		3mL+3.15% (3.75%)	September 26, 2016
Stockmen’s Statutory Trust III	—		7,732		3mL+2.89% (3.42%)	September 17, 2016
Total	$	—	$	164,950

Schedule Of Subordinated Notes

(In thousands)	Subordinated notes
Coupon rate	Balance		Par amount		Maturity
5.65%	$	160,195	$	162,000	Nov 2023
6.95%	86,355		87,891		Sep 2028
Total	$	246,550	$	249,891

Schedule Of Senior Medium-Term Notes

(In thousands)	Senior notes
Coupon rate	Balance		Par amount		Maturity
4.50%	152,411		163,857		March 2017
4.50%	135,149		145,231		June 2023
Total	$	287,560	$	309,088

Debt Redemptions and Repurchases

(In thousands)	2016		2015
Note type	Par amount		Par amount
Trust preferred:
3mL+2.85%			$	3,093
3mL+2.85% (3.38%)	$	51,547
3mL+1.90% (2.22%)	36,083
3mL+1.78% (2.29%)	61,856
3mL+3.15% (3.75%)	7,732
3mL+2.89% (3.42%)	7,732
	164,950		3,093
Convertible subordinated notes:
6.00%			79,276
5.50%			71,592
	—		150,868
Subordinated notes:
6.00%			32,366
5.50%			52,078
	—		84,444
Senior notes:
3.30% - 3.70%			27,281
3.60%	11,108
4.00%	89,360
	100,468		27,281
Federal Home Loan Bank Advances			22,009
Total	$	265,418	$	287,695

Schedule Of Maturities On Long-Term Debt

(Amounts in thousands)	2016
Note type	Coupon rate Min		Coupon rate Max
Senior notes	4.50	%	4.50	%