Other Borrowings and Subordinated Debentures (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Schedule of Debt

Debt at December 31, 2018 and 2017 consisted of the following components. 

(In thousands)	2018			2017
Other Borrowings
FHLB advances, net of discount, due 2019 to 2033, 1.38% to 7.37% secured by residential real estate loans	$	1,345,450		$	1,261,642
Revolving credit agreement, due 10/4/2019, floating rate of 1.50% above the one month LIBOR rate, unsecured	—			75,000
Notes payable, due 10/15/2020, 3.85%, fixed rate, unsecured	—			43,382
Total other borrowings	1,345,450			1,380,024
Subordinated Notes and Debentures
Subordinated notes payable, due 4/1/2028, fixed-to-floating rate (fixed rate of 5.00% through 3/31/2023, floating rate of 2.15% above the three month LIBOR rate, reset quarterly)	330,000			—
Trust preferred securities, due 12/30/2033, floating rate of 2.80% above the three month LIBOR rate, reset quarterly, callable without penalty	—			20,620
Trust preferred securities, net of discount, due 6/30/2035, floating rate of 1.75% above the three month LIBOR rate, reset quarterly, callable without penalty	—			9,327
Trust preferred securities, net of discount, due 9/15/2037, floating rate of 1.37% above the three month LIBOR rate, reset quarterly	10,310			10,284
Trust preferred securities, net of discount, due 12/5/2033, floating rate of 2.88% above the three month LIBOR rate, reset quarterly, callable without penalty	—			5,156
Trust preferred securities, net of discount, due 10/18/2034, floating rate of 2.00% above the three month LIBOR rate, reset quarterly, callable without penalty	—			5,148
Trust preferred securities, net of discount, due 6/6/2037, floating rate of 1.57% above the three month LIBOR rate, reset quarterly, callable without penalty	10,310			10,288
Trust preferred securities, due 12/15/2035, floating rate of 1.45% above the three month LIBOR rate, reset quarterly, callable without penalty	6,702			6,702
Trust preferred securities, due 6/26/2033, floating rate of 3.10% above the three month LIBOR rate, reset quarterly, callable without penalty	—			20,619
Trust preferred securities, due 10/7/2033, floating rate of 2.85% above the three month LIBOR rate, reset quarterly, callable without penalty	—			25,774
Trust preferred securities, due 9/15/2037, floating rate of 2.00% above the three month LIBOR rate, reset quarterly, callable without penalty	—			8,248
Other subordinated debentures, net of discount, due 9/30/2023, floating rate equal to daily average of prime rate, reset quarterly	—			18,399
Unamortized debt issuance costs	(3,372		)	—
Total subordinated notes and debentures	353,950			140,565
Total other borrowings and subordinated debt	$	1,699,400		$	1,520,589

Schedule of Aggregate Annual Maturities of Long-term Debt

Aggregate annual maturities of long-term debt at December 31, 2018, are as follows:

Year	(In thousands)
2019	$	2,135
2020	2,109
2021	1,800
2022	949
2023	923
Thereafter	361,484
Total	$	369,400