| Schedule of available-for-sale and held-to-maturity debt securities by date |
| | | | | | | | | | | | | | | March 31, 2026 | | | | | Gross | | Gross | | | | | Amortized | | Unrealized | | Unrealized | | Fair | | | Cost | | Gains | | Losses | | Value | | | | (In thousands) | Securities available-for-sale: | | | | | | | | | | | | | Mortgage-backed securities – agency | | $ | 95,333 | | $ | 80 | | $ | (12,055) | | $ | 83,358 | Collateralized mortgage obligations ("CMOs") – agency | | | 175,605 | | | 845 | | | (1,814) | | | 174,636 | Total available-for-sale | | $ | 270,938 | | $ | 925 | | $ | (13,869) | | $ | 257,994 | | | | | | | | | | | | | | | | | | Gross | | Gross | | | | | Amortized | | Unrecognized | | Unrecognized | | Fair | | | Cost | | Gains | | Losses | | Value | | | | (In thousands) | Securities held-to-maturity: | | | | | | | | | | | | | CMOs – agency | | $ | 58,312 | | $ | 10 | | $ | (5,075) | | $ | 53,247 | Total held-to-maturity | | $ | 58,312 | | $ | 10 | | $ | (5,075) | | $ | 53,247 | | | | | | | | | | | | | | | | December 31, 2025 | | | | | Gross | | Gross | | | | | Amortized | | Unrealized | | Unrealized | | Fair | | | Cost | | Gains | | Losses | | Value | | | | (In thousands) | Securities available-for-sale: | | | | | | | | | | | | | Mortgage-backed securities – agency | | $ | 97,697 | | $ | 92 | | $ | (12,094) | | $ | 85,695 | CMOs – agency | | | 160,723 | | | 1,443 | | | (1,356) | | | 160,810 | Total available-for-sale | | $ | 258,420 | | $ | 1,535 | | $ | (13,450) | | $ | 246,505 | | | | | | | | | | | | | | | | | | Gross | | Gross | | | | | Amortized | | Unrecognized | | Unrecognized | | Fair | | | Cost | | Gains | | Losses | | Value | | | | (In thousands) | Securities held-to-maturity: | | | | | | | | | | | | | CMOs – agency | | $ | 60,193 | | $ | 26 | | $ | (4,719) | | $ | 55,500 | Total held-to-maturity | | $ | 60,193 | | $ | 26 | | $ | (4,719) | | $ | 55,500 |
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| Schedule of gross unrealized and unrecognized losses and fair value for available-for-sale and held-to-maturity debt securities in continuous unrealized loss positions |
| | | | | | | | | | | | | | | | | | | | | March 31, 2026 | | | Less Than 12 Months | | 12 Months or Longer | | Total | | | Fair
Value | | Gross
Unrealized
Losses | | Fair
Value | | Gross
Unrealized
Losses | | Fair
Value | | Gross
Unrealized
Losses | | | | (In thousands) | Securities available-for-sale: | | | | | | | | | | | | | | | | | | | Mortgage-backed securities – agency | | $ | 4,539 | | $ | (37) | | $ | 70,431 | | $ | (12,018) | | $ | 74,970 | | $ | (12,055) | CMOs – agency | | | 39,132 | | | (382) | | | 14,329 | | | (1,432) | | | 53,461 | | | (1,814) | Total available-for-sale | | $ | 43,671 | | $ | (419) | | $ | 84,760 | | $ | (13,450) | | $ | 128,431 | | $ | (13,869) | | | | | | | | | | | | | | | | | | | | | | Less Than 12 Months | | 12 Months or Longer | | Total | | | Fair
Value | | Gross
Unrecognized
Losses | | Fair
Value | | Gross
Unrecognized
Losses | | Fair
Value | | Gross
Unrecognized
Losses | | | | (In thousands) | Securities held-to-maturity: | | | | | | | | | | | | | | | | | | | CMOs – agency | | $ | 3,695 | | $ | (11) | | $ | 46,684 | | $ | (5,064) | | $ | 50,379 | | $ | (5,075) | Total held-to-maturity | | $ | 3,695 | | $ | (11) | | $ | 46,684 | | $ | (5,064) | | $ | 50,379 | | $ | (5,075) | | | | | | | | | | | | | | | | | | | | | | December 31, 2025 | | | Less Than 12 Months | | 12 Months or Longer | | Total | | | Fair
Value | | Gross
Unrealized
Losses | | Fair
Value | | Gross
Unrealized
Losses | | Fair
Value | | Gross
Unrealized
Losses | | | | (In thousands) | Securities available-for-sale: | | | | | | | | | | | | | | | | | | | Mortgage-backed securities – agency | | $ | 1,626 | | $ | (15) | | $ | 72,692 | | $ | (12,079) | | $ | 74,318 | | $ | (12,094) | CMOs – agency | | | — | | | — | | | 20,400 | | | (1,356) | | | 20,400 | | | (1,356) | Total available-for-sale | | $ | 1,626 | | $ | (15) | | $ | 93,092 | | $ | (13,435) | | $ | 94,718 | | $ | (13,450) | | | | | | | | | | | | | | | | | | | | | | Less Than 12 Months | | 12 Months or Longer | | Total | | | Fair
Value | | Gross
Unrecognized
Losses | | Fair
Value | | Gross
Unrecognized
Losses | | Fair
Value | | Gross
Unrecognized
Losses | | | | (In thousands) | Securities held-to-maturity: | | | | | | | | | | | | | | | | | | | CMOs – agency | | $ | — | | $ | — | | $ | 48,406 | | $ | (4,719) | | $ | 48,406 | | $ | (4,719) | Total held-to-maturity | | $ | — | | $ | — | | $ | 48,406 | | $ | (4,719) | | $ | 48,406 | | $ | (4,719) |
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