Note 7 - Investment Securities (Tables)
|
9 Months Ended |
Sep. 30, 2019 |
Notes Tables |
|
Schedule of Available-for-sale Securities Reconciliation [Table Text Block] |
|
|
September 30, 2019 |
|
|
|
|
|
|
|
Gross |
|
|
Gross |
|
|
|
|
|
|
|
Amortized |
|
|
Unrealized |
|
|
Unrealized |
|
|
|
|
|
|
|
Cost |
|
|
Gains |
|
|
Losses |
|
|
Fair Value |
|
|
|
(In thousands) |
|
Securities Available-for-Sale |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. government agency entities |
|
$ |
92,477 |
|
|
$ |
750 |
|
|
$ |
273 |
|
|
$ |
92,954 |
|
U.S. government sponsored entities |
|
|
350,000 |
|
|
|
— |
|
|
|
2,301 |
|
|
|
347,699 |
|
Mortgage-backed securities |
|
|
880,406 |
|
|
|
7,714 |
|
|
|
1,385 |
|
|
|
886,735 |
|
Collateralized mortgage obligations |
|
|
683 |
|
|
|
— |
|
|
|
18 |
|
|
|
665 |
|
Corporate debt securities |
|
|
98,865 |
|
|
|
533 |
|
|
|
13 |
|
|
|
99,385 |
|
Total |
|
$ |
1,422,431 |
|
|
$ |
8,997 |
|
|
$ |
3,990 |
|
|
$ |
1,427,438 |
|
|
|
December 31, 2018 |
|
|
|
|
|
|
|
Gross |
|
|
Gross |
|
|
|
|
|
|
|
Amortized |
|
|
Unrealized |
|
|
Unrealized |
|
|
|
|
|
|
|
Cost |
|
|
Gains |
|
|
Losses |
|
|
Fair Value |
|
|
|
(In thousands) |
|
Securities Available-for-Sale |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. treasury securities |
|
$ |
124,801 |
|
|
$ |
— |
|
|
$ |
50 |
|
|
$ |
124,751 |
|
U.S. government agency entities |
|
|
6,066 |
|
|
|
— |
|
|
|
195 |
|
|
|
5,871 |
|
U.S. government sponsored entities |
|
|
400,000 |
|
|
|
— |
|
|
|
11,638 |
|
|
|
388,362 |
|
Mortgage-backed securities |
|
|
670,874 |
|
|
|
960 |
|
|
|
15,089 |
|
|
|
656,745 |
|
Collateralized mortgage obligations |
|
|
1,005 |
|
|
|
— |
|
|
|
28 |
|
|
|
977 |
|
Corporate debt securities |
|
|
64,985 |
|
|
|
818 |
|
|
|
— |
|
|
|
65,803 |
|
Total |
|
$ |
1,267,731 |
|
|
$ |
1,778 |
|
|
$ |
27,000 |
|
|
$ |
1,242,509 |
|
|
Investments Classified by Contractual Maturity Date [Table Text Block] |
|
|
September 30, 2019 |
|
|
|
Securities Available-For-Sale |
|
|
|
Amortized Cost |
|
|
Fair Value |
|
|
|
(In thousands) |
|
|
|
|
|
|
|
|
|
|
Due in one year or less |
|
$ |
19,993 |
|
|
$ |
20,103 |
|
Due after one year through five years |
|
|
429,449 |
|
|
|
427,578 |
|
Due after five years through ten years |
|
|
41,718 |
|
|
|
41,710 |
|
Due after ten years |
|
|
931,271 |
|
|
|
938,047 |
|
Total |
|
$ |
1,422,431 |
|
|
$ |
1,427,438 |
|
|
Schedule of Unrealized Loss on Investments [Table Text Block] |
|
|
September 30, 2019 |
|
|
|
Less than 12 Months |
|
|
12 Months or Longer |
|
|
Total |
|
|
|
|
|
|
|
Gross |
|
|
|
|
|
|
Gross |
|
|
|
|
|
|
Gross |
|
|
|
Fair |
|
|
Unrealized |
|
|
Fair |
|
|
Unrealized |
|
|
Fair |
|
|
Unrealized |
|
|
|
Value |
|
|
Losses |
|
|
Value |
|
|
Losses |
|
|
Value |
|
|
Losses |
|
|
|
(In thousands) |
|
Securities Available-for-Sale |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. government agency entities |
|
$ |
49,796 |
|
|
$ |
108 |
|
|
$ |
3,748 |
|
|
$ |
165 |
|
|
$ |
53,544 |
|
|
$ |
273 |
|
U.S. government sponsored entities |
|
|
— |
|
|
|
— |
|
|
|
347,699 |
|
|
|
2,301 |
|
|
|
347,699 |
|
|
|
2,301 |
|
Mortgage-backed securities |
|
|
115,727 |
|
|
|
220 |
|
|
|
146,666 |
|
|
|
1,165 |
|
|
|
262,393 |
|
|
|
1,385 |
|
Collateralized mortgage obligations |
|
|
— |
|
|
|
— |
|
|
|
665 |
|
|
|
18 |
|
|
|
665 |
|
|
|
18 |
|
Corporate debt securities |
|
|
28,819 |
|
|
|
13 |
|
|
|
— |
|
|
|
— |
|
|
|
28,819 |
|
|
|
13 |
|
Total |
|
$ |
194,342 |
|
|
$ |
341 |
|
|
$ |
498,778 |
|
|
$ |
3,649 |
|
|
$ |
693,120 |
|
|
$ |
3,990 |
|
|
|
December 31, 2018 |
|
|
|
Less than 12 Months |
|
|
12 Months or Longer |
|
|
Total |
|
|
|
|
|
|
|
Gross |
|
|
|
|
|
|
Gross |
|
|
|
|
|
|
Gross |
|
|
|
Fair |
|
|
Unrealized |
|
|
Fair |
|
|
Unrealized |
|
|
Fair |
|
|
Unrealized |
|
|
|
Value |
|
|
Losses |
|
|
Value |
|
|
Losses |
|
|
Value |
|
|
Losses |
|
|
|
(In thousands) |
|
Securities Available-for-Sale |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. treasury securities |
|
$ |
124,751 |
|
|
$ |
50 |
|
|
$ |
— |
|
|
$ |
— |
|
|
$ |
124,751 |
|
|
$ |
50 |
|
U.S. government agency entities |
|
|
3,388 |
|
|
|
77 |
|
|
|
2,483 |
|
|
|
118 |
|
|
|
5,871 |
|
|
|
195 |
|
U.S. government sponsored entities |
|
|
— |
|
|
|
— |
|
|
|
388,362 |
|
|
|
11,638 |
|
|
|
388,362 |
|
|
|
11,638 |
|
Mortgage-backed securities |
|
|
48,528 |
|
|
|
502 |
|
|
|
507,701 |
|
|
|
14,587 |
|
|
|
556,229 |
|
|
|
15,089 |
|
Collateralized mortgage obligations |
|
|
— |
|
|
|
— |
|
|
|
977 |
|
|
|
28 |
|
|
|
977 |
|
|
|
28 |
|
Total |
|
$ |
176,667 |
|
|
$ |
629 |
|
|
$ |
899,523 |
|
|
$ |
26,371 |
|
|
$ |
1,076,190 |
|
|
$ |
27,000 |
|
|