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Securities (Tables) | 3 Months Ended
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Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract] |
Debt Securities, Available-for-sale | The amortized cost, estimated fair value, and allowance for credit losses of debt securities available-for-sale and held-to-maturity at March 31, 2020, and December 31, 2019, are as follows (in thousands):
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value |  |
At March 31, 2020 |  |  |  |  |  |  |  |  |
Debt securities available-for-sale: |  |  |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |  |  |
U.S. government and agency obligations | $ | 149,261 |  |  | $ | 4,051 |  |  | $ | (4 | ) |  | $ | 153,308 |  |  |
State and municipal obligations | 25 |  |  | — |  |  | — |  |  | 25 |  |  |
Total investment securities | 149,286 |  |  | 4,051 |  |  | (4 | ) |  | 153,333 |  |  |
Mortgage-backed securities - FNMA | 397 |  |  | 8 |  |  | — |  |  | 405 |  |  |
Total debt securities available-for-sale | $ | 149,683 |  |  | $ | 4,059 |  |  | $ | (4 | ) |  | $ | 153,738 |  |  |
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value |  | Allowance for Credit Losses
At March 31, 2020 |  |  |  |  |  |  |  |  |
Debt securities held-to-maturity: |  |  |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |  |  |
U.S. government and agency obligations | $ | 6,238 |  |  | $ | 54 |  |  | $ | — |  |  | $ | 6,292 |  |  | $ | — |
State and municipal obligations | 232,167 |  |  | 3,014 |  |  | (425 | ) |  | 234,756 |  |  | (35 | )
Corporate debt securities | 82,277 |  |  | 510 |  |  | (8,568 | ) |  | 74,219 |  |  | (1,651 | )
Total investment securities | 320,682 |  |  | 3,578 |  |  | (8,993 | ) |  | 315,267 |  |  | (1,686 | )
Mortgage-backed securities: |  |  |  |  |  |  |  |  |
FHLMC | 198,263 |  |  | 5,835 |  |  | (30 | ) |  | 204,068 |  |  | — |
FNMA | 240,839 |  |  | 7,604 |  |  | (165 | ) |  | 248,278 |  |  | — |
GNMA | 104,891 |  |  | 2,027 |  |  | (416 | ) |  | 106,502 |  |  | — |
SBA | 6,108 |  |  | 9 |  |  | (46 | ) |  | 6,071 |  |  | — |
CMO | 49,904 |  |  | — |  |  | (1,508 | ) |  | 48,396 |  |  | (843 | )
Total mortgage-backed securities | 600,005 |  |  | 15,475 |  |  | (2,165 | ) |  | 613,315 |  |  | (843 | )
Total debt securities held-to-maturity | $ | 920,687 |  |  | $ | 19,053 |  |  | $ | (11,158 | ) |  | $ | 928,582 |  |  | $ | (2,529 | )
Total debt securities | $ | 1,070,370 |  |  | $ | 23,112 |  |  | $ | (11,162 | ) |  | $ | 1,082,320 |  |  | $ | (2,529 | )
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
At December 31, 2019 |  |  |  |  |  |  |
Debt securities available-for-sale: |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |
U.S. government and agency obligations | $ | 149,120 |  |  | $ | 1,408 |  |  | $ | (93 | ) |  | $ | 150,435 |
State and municipal obligations | 25 |  |  | — |  |  | — |  |  | 25 |
Total investment securities | 149,145 |  |  | 1,408 |  |  | (93 | ) |  | 150,460 |
Mortgage-backed securities - FNMA | 495 |  |  | 5 |  |  | — |  |  | 500 |
Total debt securities available-for-sale | $ | 149,640 |  |  | $ | 1,413 |  |  | $ | (93 | ) |  | $ | 150,960 |
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
December 31, 2019 |  |  |  |  |  |  |
Debt securities held-to-maturity: |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |
U.S. government and agency obligations | $ | 4,984 |  |  | $ | 14 |  |  | $ | — |  |  | $ | 4,998 |
State and municipal obligations | 124,430 |  |  | 1,537 |  |  | (208 | ) |  | 125,759 |
Corporate debt securities | 79,547 |  |  | 833 |  |  | (2,421 | ) |  | 77,959 |
Total investment securities | 208,961 |  |  | 2,384 |  |  | (2,629 | ) |  | 208,716 |
Mortgage-backed securities: |  |  |  |  |  |  |
FHLMC | 206,985 |  |  | 2,221 |  |  | (524 | ) |  | 208,682 |
FNMA | 244,428 |  |  | 2,680 |  |  | (493 | ) |  | 246,615 |
GNMA | 110,661 |  |  | 939 |  |  | (212 | ) |  | 111,388 |
SBA | 1,940 |  |  | — |  |  | (51 | ) |  | 1,889 |
Total mortgage-backed securities | 564,014 |  |  | 5,840 |  |  | (1,280 | ) |  | 568,574 |
Total debt securities held-to-maturity | $ | 772,975 |  |  | $ | 8,224 |  |  | $ | (3,909 | ) |  | $ | 777,290 |
Total debt securities | $ | 922,615 |  |  | $ | 9,637 |  |  | $ | (4,002 | ) |  | $ | 928,250 |
Carrying Value of Held-to-Maturity Investment Securities | The amortized cost, estimated fair value, and allowance for credit losses of debt securities available-for-sale and held-to-maturity at March 31, 2020, and December 31, 2019, are as follows (in thousands):
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value |  |
At March 31, 2020 |  |  |  |  |  |  |  |  |
Debt securities available-for-sale: |  |  |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |  |  |
U.S. government and agency obligations | $ | 149,261 |  |  | $ | 4,051 |  |  | $ | (4 | ) |  | $ | 153,308 |  |  |
State and municipal obligations | 25 |  |  | — |  |  | — |  |  | 25 |  |  |
Total investment securities | 149,286 |  |  | 4,051 |  |  | (4 | ) |  | 153,333 |  |  |
Mortgage-backed securities - FNMA | 397 |  |  | 8 |  |  | — |  |  | 405 |  |  |
Total debt securities available-for-sale | $ | 149,683 |  |  | $ | 4,059 |  |  | $ | (4 | ) |  | $ | 153,738 |  |  |
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value |  | Allowance for Credit Losses
At March 31, 2020 |  |  |  |  |  |  |  |  |
Debt securities held-to-maturity: |  |  |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |  |  |
U.S. government and agency obligations | $ | 6,238 |  |  | $ | 54 |  |  | $ | — |  |  | $ | 6,292 |  |  | $ | — |
State and municipal obligations | 232,167 |  |  | 3,014 |  |  | (425 | ) |  | 234,756 |  |  | (35 | )
Corporate debt securities | 82,277 |  |  | 510 |  |  | (8,568 | ) |  | 74,219 |  |  | (1,651 | )
Total investment securities | 320,682 |  |  | 3,578 |  |  | (8,993 | ) |  | 315,267 |  |  | (1,686 | )
Mortgage-backed securities: |  |  |  |  |  |  |  |  |
FHLMC | 198,263 |  |  | 5,835 |  |  | (30 | ) |  | 204,068 |  |  | — |
FNMA | 240,839 |  |  | 7,604 |  |  | (165 | ) |  | 248,278 |  |  | — |
GNMA | 104,891 |  |  | 2,027 |  |  | (416 | ) |  | 106,502 |  |  | — |
SBA | 6,108 |  |  | 9 |  |  | (46 | ) |  | 6,071 |  |  | — |
CMO | 49,904 |  |  | — |  |  | (1,508 | ) |  | 48,396 |  |  | (843 | )
Total mortgage-backed securities | 600,005 |  |  | 15,475 |  |  | (2,165 | ) |  | 613,315 |  |  | (843 | )
Total debt securities held-to-maturity | $ | 920,687 |  |  | $ | 19,053 |  |  | $ | (11,158 | ) |  | $ | 928,582 |  |  | $ | (2,529 | )
Total debt securities | $ | 1,070,370 |  |  | $ | 23,112 |  |  | $ | (11,162 | ) |  | $ | 1,082,320 |  |  | $ | (2,529 | )
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
At December 31, 2019 |  |  |  |  |  |  |
Debt securities available-for-sale: |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |
U.S. government and agency obligations | $ | 149,120 |  |  | $ | 1,408 |  |  | $ | (93 | ) |  | $ | 150,435 |
State and municipal obligations | 25 |  |  | — |  |  | — |  |  | 25 |
Total investment securities | 149,145 |  |  | 1,408 |  |  | (93 | ) |  | 150,460 |
Mortgage-backed securities - FNMA | 495 |  |  | 5 |  |  | — |  |  | 500 |
Total debt securities available-for-sale | $ | 149,640 |  |  | $ | 1,413 |  |  | $ | (93 | ) |  | $ | 150,960 |
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
December 31, 2019 |  |  |  |  |  |  |
Debt securities held-to-maturity: |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |
U.S. government and agency obligations | $ | 4,984 |  |  | $ | 14 |  |  | $ | — |  |  | $ | 4,998 |
State and municipal obligations | 124,430 |  |  | 1,537 |  |  | (208 | ) |  | 125,759 |
Corporate debt securities | 79,547 |  |  | 833 |  |  | (2,421 | ) |  | 77,959 |
Total investment securities | 208,961 |  |  | 2,384 |  |  | (2,629 | ) |  | 208,716 |
Mortgage-backed securities: |  |  |  |  |  |  |
FHLMC | 206,985 |  |  | 2,221 |  |  | (524 | ) |  | 208,682 |
FNMA | 244,428 |  |  | 2,680 |  |  | (493 | ) |  | 246,615 |
GNMA | 110,661 |  |  | 939 |  |  | (212 | ) |  | 111,388 |
SBA | 1,940 |  |  | — |  |  | (51 | ) |  | 1,889 |
Total mortgage-backed securities | 564,014 |  |  | 5,840 |  |  | (1,280 | ) |  | 568,574 |
Total debt securities held-to-maturity | $ | 772,975 |  |  | $ | 8,224 |  |  | $ | (3,909 | ) |  | $ | 777,290 |
Total debt securities | $ | 922,615 |  |  | $ | 9,637 |  |  | $ | (4,002 | ) |  | $ | 928,250 |
The carrying value of the debt securities held-to-maturity at March 31, 2020, and December 31, 2019, is as follows (in thousands):
| March 31, 2020 |  | December 31, 2019
Amortized cost | $ | 920,687 |  |  | $ | 772,975 |
Net loss on date of transfer from available-for-sale | (13,347 | ) |  | (13,347 | )
Allowance for credit loss | (2,529 | ) |  | — |
Accretion of net unrealized loss on securities reclassified as held-to-maturity | 9,444 |  |  | 9,245 |
Carrying value | $ | 914,255 |  |  | $ | 768,873 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | The following table presents the activity in the allowance for credit losses for debt securities held-to-maturity by major security type for the three months ended March 31, 2020 (in thousands):
| Investment securities |  | Mortgage-backed securities
Allowance for credit losses |  |  |
Beginning balance | $ | — |  |  | $ | — |
Impact of CECL adoption | (1,268 | ) |  | — |
Provision for credit loss expense | (418 | ) |  | (843 | )
Total ending allowance balance | $ | (1,686 | ) |  | $ | (843 | )
Amortized Cost and Estimated Fair Value of Investment Securities by Contractual Maturity | The amortized cost and estimated fair value of investment securities at March 31, 2020 by contractual maturity are shown below (in thousands). Actual maturities may differ from contractual maturities in instances where issuers have the right to call or prepay obligations with or without call or prepayment penalties. At March 31, 2020, corporate debt securities with an amortized cost of $57.0 million and estimated fair value of $49.0 million were callable prior to the maturity date.
March 31, 2020 | Amortized Cost |  | Estimated Fair Value
Less than one year | $ | 82,453 |  |  | $ | 82,780 |
Due after one year through five years | 199,795 |  |  | 204,837 |
Due after five years through ten years | 77,653 |  |  | 70,576 |
Due after ten years | 110,067 |  |  | 110,407 |
| $ | 469,968 |  |  | $ | 468,600 |
Estimated Fair Value and Unrealized Loss for Securities Available-for-Sale and Held-to-Maturity | The estimated fair value and unrealized losses of debt securities available-for-sale and held-to-maturity at March 31, 2020 and December 31, 2019, segregated by the duration of the unrealized losses, are as follows (in thousands):
| At March 31, 2020
| Less than 12 months |  | 12 months or longer |  | Total
| Estimated Fair Value |  | Unrealized Losses |  | Estimated Fair Value |  | Unrealized Losses |  | Estimated Fair Value |  | Unrealized Losses
Debt securities available-for-sale: |  |  |  |  |  |  |  |  |  |  |
Investment securities - U.S. government and agency obligations | $ | 4,900 |  |  | $ | (4 | ) |  | $ | — |  |  | $ | — |  |  | $ | 4,900 |  |  | $ | (4 | )
Total debt securities available-for-sale | 4,900 |  |  | (4 | ) |  | — |  |  | — |  |  | 4,900 |  |  | (4 | )
Debt securities held-to-maturity: |  |  |  |  |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |  |  |  |  |
U.S. government and agency obligations | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
State and municipal obligations | 38,712 |  |  | (247 | ) |  | 8,532 |  |  | (178 | ) |  | 47,244 |  |  | (425 | )
Corporate debt securities | 20,259 |  |  | (1,528 | ) |  | 31,292 |  |  | (7,040 | ) |  | 51,551 |  |  | (8,568 | )
Total investment securities | 58,971 |  |  | (1,775 | ) |  | 39,824 |  |  | (7,218 | ) |  | 98,795 |  |  | (8,993 | )
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |
FHLMC | 1,653 |  |  | (22 | ) |  | 1,772 |  |  | (8 | ) |  | 3,425 |  |  | (30 | )
FNMA | 20,857 |  |  | (154 | ) |  | 444 |  |  | (11 | ) |  | 21,301 |  |  | (165 | )
GNMA | 15,906 |  |  | (266 | ) |  | 7,222 |  |  | (150 | ) |  | 23,128 |  |  | (416 | )
SBA | — |  |  | — |  |  | 1,763 |  |  | (46 | ) |  | 1,763 |  |  | (46 | )
CMO | 48,396 |  |  | (1,508 | ) |  | — |  |  | — |  |  | 48,396 |  |  | (1,508 | )
Total mortgage-backed securities | 86,812 |  |  | (1,950 | ) |  | 11,201 |  |  | (215 | ) |  | 98,013 |  |  | (2,165 | )
Total debt securities held-to-maturity | 145,783 |  |  | (3,725 | ) |  | 51,025 |  |  | (7,433 | ) |  | 196,808 |  |  | (11,158 | )
Total debt securities | $ | 150,683 |  |  | $ | (3,729 | ) |  | $ | 51,025 |  |  | $ | (7,433 | ) |  | $ | 201,708 |  |  | $ | (11,162 | )
| At December 31, 2019
| Less than 12 months |  | 12 months or longer |  | Total
| Estimated Fair Value |  | Unrealized Losses |  | Estimated Fair Value |  | Unrealized Losses |  | Estimated Fair Value |  | Unrealized Losses
Debt securities available-for-sale: |  |  |  |  |  |  |  |  |  |  |
Investment securities - U.S. government and agency obligations | $ | 25,021 |  |  | $ | (54 | ) |  | $ | 22,451 |  |  | $ | (39 | ) |  | $ | 47,472 |  |  | $ | (93 | )
Total debt securities available-for-sale | 25,021 |  |  | (54 | ) |  | 22,451 |  |  | (39 | ) |  | 47,472 |  |  | (93 | )
Debt securities held-to-maturity: |  |  |  |  |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |  |  |  |  |
State and municipal obligations | 7,308 |  |  | (58 | ) |  | 14,531 |  |  | (150 | ) |  | 21,839 |  |  | (208 | )
Corporate debt securities | 9,727 |  |  | (213 | ) |  | 37,628 |  |  | (2,208 | ) |  | 47,355 |  |  | (2,421 | )
Total investment securities | 17,035 |  |  | (271 | ) |  | 52,159 |  |  | (2,358 | ) |  | 69,194 |  |  | (2,629 | )
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |
FHLMC | 6,329 |  |  | (29 | ) |  | 38,641 |  |  | (495 | ) |  | 44,970 |  |  | (524 | )
FNMA | 13,682 |  |  | (59 | ) |  | 38,568 |  |  | (434 | ) |  | 52,250 |  |  | (493 | )
GNMA | 30,268 |  |  | (93 | ) |  | 19,828 |  |  | (119 | ) |  | 50,096 |  |  | (212 | )
SBA | — |  |  | — |  |  | 1,889 |  |  | (51 | ) |  | 1,889 |  |  | (51 | )
Total mortgage-backed securities | 50,279 |  |  | (181 | ) |  | 98,926 |  |  | (1,099 | ) |  | 149,205 |  |  | (1,280 | )
Total debt securities held-to-maturity | 67,314 |  |  | (452 | ) |  | 151,085 |  |  | (3,457 | ) |  | 218,399 |  |  | (3,909 | )
Total debt securities | $ | 92,335 |  |  | $ | (506 | ) |  | $ | 173,536 |  |  | $ | (3,496 | ) |  | $ | 265,871 |  |  | $ | (4,002 | )
Amortized Cost, Estimated Fair Value and Credit Rating of Corporate Debt Securities | At March 31, 2020, the amortized cost, estimated fair value and credit rating of the individual corporate debt securities in an unrealized loss position for greater than one year are as follows (in thousands):
Security Description | Amortized Cost |  | Estimated Fair Value |  | Credit Rating Moody’s/ S&P
Chase Capital | $ | 10,000 |  |  | $ | 8,300 |  |  | Baa1/BBB-
Wells Fargo Capital | 5,000 |  |  | 4,200 |  |  | A1/BBB
Huntington Capital | 5,000 |  |  | 3,850 |  |  | Baa2/BB+
Keycorp Capital | 5,000 |  |  | 4,100 |  |  | Baa2/BB+
PNC Capital | 5,000 |  |  | 4,010 |  |  | Baa1/BBB-
State Street Capital | 3,332 |  |  | 2,732 |  |  | A3/BBB
SunTrust Capital | 5,000 |  |  | 4,100 |  |  | Not Rated/BBB-
| $ | 38,332 |  |  | $ | 31,292 |  |  |
Debt Securities, Held-to-maturity, Credit Quality Indicator | The following table summarized the amortized cost of debt securities held-to-maturity at March 31, 2020, aggregated by credit quality indicator (in thousands):
| AAA |  | AA |  | A |  | BBB |  | BB |  | Total
As of March 31, 2020 |  |  |  |  |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |  |  |  |  |
U.S. government and agency obligations | $ | — |  |  | $ | 6,238 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 6,238 |
State and municipal obligations | 41,863 |  |  | 135,634 |  |  | 49,366 |  |  | 5,304 |  |  | — |  |  | 232,167 |
Corporate debt securities | — |  |  | 1,493 |  |  | 17,450 |  |  | 52,803 |  |  | 10,531 |  |  | 82,277 |
Total investment securities | 41,863 |  |  | 143,365 |  |  | 66,816 |  |  | 58,107 |  |  | 10,531 |  |  | 320,682 |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |
CMO | 16,924 |  |  | 32,980 |  |  | — |  |  | — |  |  | — |  |  | 49,904 |
Total mortgage-backed securities | 16,924 |  |  | 32,980 |  |  | — |  |  | — |  |  | — |  |  | 49,904 |
Total debt securities held-to-maturity | $ | 58,787 |  |  | $ | 176,345 |  |  | $ | 66,816 |  |  | $ | 58,107 |  |  | $ | 10,531 |  |  | $ | 370,586 |

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27290-111563 + Details
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