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Securities (Tables) | 6 Months Ended
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Jun. 30, 2021
Notes Tables |
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block] | ​ The following table summarizes the Company’s portfolio of securities held-to-maturity at June 30, 2021: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross
​ | ​ | Amortized | ​ | ​ | ​ | ​ | Unrecognized | ​ | Unrecognized
​ |  | Cost |  | Fair Value |  | Gains |  | Losses
​ | ​ | (In thousands)
Securities held-to-maturity: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Municipals | ​ | $ | 50,830 | ​ | $ | 53,598 | ​ | $ | 2,768 | ​ | $ | —
Total other securities | ​ |  | 50,830 | ​ |  | 53,598 | ​ |  | 2,768 | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
FNMA | ​ |  | 7,904 | ​ |  | 8,848 | ​ |  | 944 | ​ |  | —
Total mortgage-backed securities | ​ |  | 7,904 | ​ |  | 8,848 | ​ |  | 944 | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for Credit Losses | ​ | ​ | (844) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Total | ​ | $ | 57,890 | ​ | $ | 62,446 | ​ | $ | 3,712 | ​ | $ | —
​ The following table summarizes the Company’s portfolio of securities held-to-maturity at December 31, 2020: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross
​ | ​ | Amortized | ​ | ​ | ​ | ​ | Unrecognized | ​ | Unrecognized
​ |  | Cost |  | Fair Value |  | Gains |  | Losses
​ | ​ | (In thousands)
Securities held-to-maturity: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Municipals | ​ | $ | 50,825 | ​ | $ | 54,538 | ​ | $ | 3,713 | ​ | $ | —
Total other securities | ​ |  | 50,825 | ​ |  | 54,538 | ​ |  | 3,713 | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
FNMA | ​ |  | 7,914 | ​ |  | 8,991 | ​ |  | 1,077 | ​ |  | —
Total mortgage-backed securities | ​ |  | 7,914 | ​ |  | 8,991 | ​ |  | 1,077 | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for Credit Losses | ​ | ​ | (907) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Total | ​ | $ | 57,832 | ​ | $ | 63,529 | ​ | $ | 4,790 | ​ | $ | —
​ ​ The following table summarizes the Company’s portfolio of securities available for sale at June 30, 2021: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross
​ | ​ | Amortized | ​ | ​ | ​ | ​ | Unrealized | ​ | Unrealized
​ |  | Cost |  | Fair Value |  | Gains |  | Losses
​ | ​ | (In thousands)
Securities available for sale: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S Government Agencies | ​ | $ | 6,206 | ​ | $ | 6,218 | ​ | $ | 15 | ​ | $ | 3
Corporate | ​ |  | 117,420 | ​ |  | 117,602 | ​ |  | 461 | ​ |  | 279
Mutual funds | ​ |  | 12,585 | ​ |  | 12,585 | ​ |  | — | ​ |  | —
Collateralized loan obligations | ​ |  | 87,148 | ​ |  | 86,884 | ​ |  | 18 | ​ |  | 282
Other | ​ |  | 1,495 | ​ |  | 1,495 | ​ |  | — | ​ |  | —
Total other securities | ​ |  | 224,854 | ​ |  | 224,784 | ​ |  | 494 | ​ |  | 564
REMIC and CMO | ​ |  | 222,748 | ​ |  | 224,065 | ​ |  | 3,042 | ​ |  | 1,725
GNMA | ​ |  | 12,033 | ​ |  | 11,802 | ​ |  | 39 | ​ |  | 270
FNMA | ​ |  | 205,159 | ​ |  | 205,782 | ​ |  | 1,783 | ​ |  | 1,160
FHLMC | ​ |  | 155,944 | ​ |  | 155,012 | ​ |  | 589 | ​ |  | 1,521
Total mortgage-backed securities | ​ |  | 595,884 | ​ |  | 596,661 | ​ |  | 5,453 | ​ |  | 4,676
Total securities available for sale | ​ | $ | 820,738 | ​ | $ | 821,445 | ​ | $ | 5,947 | ​ | $ | 5,240
​ The following table summarizes the Company’s portfolio of securities available for sale at December 31, 2020: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross
​ | ​ | Amortized | ​ | ​ | ​ | ​ | Unrealized | ​ | Unrealized
​ |  | Cost |  | Fair Value |  | Gains |  | Losses
​ | ​ | (In thousands)
Securities available for sale: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S Government Agencies | ​ | $ | 6,452 | ​ | $ | 6,453 | ​ | $ | 2 | ​ | $ | 1
Corporate | ​ |  | 130,000 | ​ |  | 123,865 | ​ |  | 131 | ​ |  | 6,266
Mutual funds | ​ |  | 12,703 | ​ |  | 12,703 | ​ |  | — | ​ |  | —
Collateralized loan obligations | ​ |  | 100,561 | ​ |  | 99,198 | ​ |  | — | ​ |  | 1,363
Other | ​ |  | 1,295 | ​ |  | 1,295 | ​ |  | — | ​ |  | —
Total other securities | ​ |  | 251,011 | ​ |  | 243,514 | ​ |  | 133 | ​ |  | 7,630
REMIC and CMO | ​ |  | 175,142 | ​ |  | 180,877 | ​ |  | 5,735 | ​ |  | —
GNMA | ​ |  | 13,009 | ​ |  | 13,053 | ​ |  | 66 | ​ |  | 22
FNMA | ​ |  | 143,154 | ​ |  | 146,169 | ​ |  | 3,046 | ​ |  | 31
FHLMC | ​ |  | 63,796 | ​ |  | 64,361 | ​ |  | 648 | ​ |  | 83
Total mortgage-backed securities | ​ |  | 395,101 | ​ |  | 404,460 | ​ |  | 9,495 | ​ |  | 136
Total securities available for sale | ​ | $ | 646,112 | ​ | $ | 647,974 | ​ | $ | 9,628 | ​ | $ | 7,766
Investments Classified by Contractual Maturity Date [Table Text Block] | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Amortized | ​ | ​ | ​
Securities held-to-maturity: |  | Cost |  | Fair Value
​ |  | (In thousands)
Due after ten years | ​ | $ | 50,830 | ​ | $ | 53,598
Total other securities | ​ | ​ | 50,830 | ​ | ​ | 53,598
Mortgage-backed securities | ​ | ​ | 7,904 | ​ | ​ | 8,848
Total held-to-maturity securities | ​ | ​ | 58,734 | ​ | ​ | 62,446
Allowance for Credit Losses | ​ | ​ | (844) | ​ | ​ | —
Total held-to-maturity securities, net of allowance for credit losses | ​ | $ | 57,890 |  | $ | 62,446
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Amortized | ​ | ​ | ​
Securities available for sale: |  | Cost |  | Fair Value
​ | ​ | (In thousands)
Due after one year through five years | ​ | $ | 30,000 | ​ | $ | 30,242
Due after five years through ten years | ​ |  | 159,551 | ​ |  | 159,243
Due after ten years | ​ | ​ | 22,718 | ​ | ​ | 22,714
Total | ​ |  | 212,269 | ​ |  | 212,199
Mutual funds | ​ |  | 12,585 | ​ |  | 12,585
Total other securities | ​ | ​ | 224,854 | ​ | ​ | 224,784
Mortgage-backed securities | ​ |  | 595,884 | ​ |  | 596,661
Total available for sale securities | ​ | $ | 820,738 | ​ | $ | 821,445
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block] | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At June 30, 2021
​ | ​ | Total | ​ | Less than 12 months | ​ | 12 months or more
​ | ​ | ​ | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​ | ​ | Unrealized
​ |  | Count |  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses
​ | ​ | (Dollars in thousands)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available for sale securities |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S Government Agencies |  | 1 | ​ | $ | 4,897 | ​ | $ | 3 | ​ | $ | 4,897 | ​ | $ | 3 | ​ | $ | — | ​ | $ | —
Corporate |  | 7 | ​ |  | 52,141 | ​ |  | 279 | ​ |  | 22,403 | ​ |  | 16 | ​ |  | 29,738 | ​ |  | 263
Collateralized loan obligations |  | 6 | ​ |  | 44,633 | ​ |  | 282 | ​ |  | — | ​ |  | — | ​ |  | 44,633 | ​ |  | 282
Total other securities |  | 14 | ​ |  | 101,671 | ​ |  | 564 | ​ |  | 27,300 | ​ |  | 19 | ​ |  | 74,371 | ​ |  | 545
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
REMIC and CMO |  | 11 | ​ |  | 112,847 | ​ |  | 1,725 | ​ |  | 112,847 | ​ |  | 1,725 | ​ |  | — | ​ |  | —
GNMA |  | 4 | ​ |  | 11,404 | ​ |  | 270 | ​ |  | 11,404 | ​ |  | 270 | ​ |  | — | ​ |  | —
FNMA |  | 16 | ​ |  | 107,883 | ​ |  | 1,160 | ​ |  | 107,883 | ​ |  | 1,160 | ​ |  | — | ​ |  | —
FHLMC |  | 10 | ​ |  | 85,084 | ​ |  | 1,521 | ​ |  | 85,084 | ​ |  | 1,521 | ​ |  | — | ​ |  | —
Total mortgage-backed securities |  | 41 | ​ |  | 317,218 | ​ |  | 4,676 | ​ |  | 317,218 | ​ |  | 4,676 | ​ |  | — | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total securities available for sale |  | 55 | ​ | $ | 418,889 | ​ | $ | 5,240 | ​ | $ | 344,518 | ​ | $ | 4,695 | ​ | $ | 74,371 | ​ | $ | 545
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At December 31, 2020
​ | ​ | Total | ​ | Less than 12 months | ​ | 12 months or more
​ | ​ | ​ | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​ | ​ | Unrealized
​ |  | Count |  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses
​ | ​ | (Dollars in thousands)
Available for sale securities |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S Government Agencies |  | 1 | ​ | $ | 4,988 | ​ | $ | 1 | ​ | $ | 4,988 | ​ | $ | 1 | ​ | $ | — | ​ | $ | —
Corporate |  | 14 | ​ |  | 113,734 | ​ |  | 6,266 | ​ |  | — | ​ |  | — | ​ |  | 113,734 | ​ |  | 6,266
Collateralized loan obligations |  | 13 | ​ |  | 99,199 | ​ |  | 1,363 | ​ |  | 7,441 | ​ |  | 52 | ​ |  | 91,758 | ​ |  | 1,311
Total other securities |  | 28 | ​ |  | 217,921 | ​ |  | 7,630 | ​ |  | 12,429 | ​ |  | 53 | ​ |  | 205,492 | ​ |  | 7,577
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
GNMA |  | 1 | ​ |  | 10,341 | ​ |  | 22 | ​ |  | 10,341 | ​ |  | 22 | ​ |  | — | ​ |  | —
FNMA |  | 5 | ​ |  | 32,463 | ​ |  | 31 | ​ |  | 23,864 | ​ |  | 28 | ​ |  | 8,599 | ​ |  | 3
FHLMC |  | 3 | ​ |  | 30,095 | ​ |  | 83 | ​ |  | 30,095 | ​ |  | 83 | ​ |  | — | ​ |  | —
Total mortgage-backed securities |  | 9 | ​ |  | 72,899 | ​ |  | 136 | ​ |  | 64,300 | ​ |  | 133 | ​ |  | 8,599 | ​ |  | 3
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total securities available for sale |  | 37 | ​ | $ | 290,820 | ​ | $ | 7,766 | ​ | $ | 76,729 | ​ | $ | 186 | ​ | $ | 214,091 | ​ | $ | 7,580
Schedule of allowance for credit losses for debt securities held-to-maturity | The following table presents the activity in the allowance for credit losses for debt securities held-to-maturity.
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Other Securities
​ | ​ | For the three months ended | ​ | For the six months ended
​ | ​ | June 30, | ​ | June 30,
​ |  | 2021 |  | 2020 |  | 2021 |  | 2020
​ | ​ | (In thousands)
Beginning balance | ​ | $ | 915 | ​ | $ | 402 | ​ | $ | 907 | ​ | $ | 340
Provision (benefit) | ​ |  | (71) | ​ |  | — | ​ |  | (63) | ​ |  | 62
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for credit losses | ​ | $ | 844 | ​ | $ | 402 | ​ | $ | 844 | ​ | $ | 402
Schedule of Realized Gain (Loss) [Table Text Block] | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the three months ended | ​ | For the six months ended
​ | ​ | June 30, | ​ | June 30,
​ |  | 2021 |  | 2020 |  | 2021 |  | 2020
​ | ​ | (In thousands)
Gross gains from the sale of securities | ​ | $ | 123 | ​ | $ | 763 | ​ | $ | 123 | ​ | $ | 1,476
Gross losses from the sale of securities | ​ |  | — | ​ |  | (817) | ​ |  | — | ​ |  | (1,567)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net gains (losses) from the sale of securities | ​ | $ | 123 | ​ | $ | (54) | ​ | $ | 123 | ​ | $ | (91)

X
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