XML 47 R35.htm IDEA: XBRL DOCUMENT
v3.22.4

Investment Securities (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract] |
Available for Sale and Held For Maturity Securities | The amortized cost, gross unrealized gains and losses and estimated fair values for available-for-sale and held-to-maturity securities by major security type at December 31, 2022 and 2021 were as follows (in thousands):
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  |  |
|  | Cost |  |  | Gains |  |  | (Losses) |  |  | Fair Value |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities and obligations of U.S. government corporations and agencies |  | $ | 252,934 |  |  | $ | — |  |  | $ | (32,407 | ) |  | $ | 220,527 |
Obligations of states and political subdivisions |  |  | 347,409 |  |  |  | 134 |  |  |  | (59,845 | ) |  |  | 287,698 |
Mortgage-backed securities: GSE residential |  |  | 744,636 |  |  |  | 3 |  |  |  | (116,759 | ) |  |  | 627,880 |
Other securities |  |  | 87,393 |  |  |  | 6 |  |  |  | (4,519 | ) |  |  | 82,880 |
Total available-for-sale |  | $ | 1,432,372 |  |  | $ | 143 |  |  | $ | (213,530 | ) |  | $ | 1,218,985 |
Held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |
Other securities |  | $ | 2,954 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,954 |
Total held-to-maturity |  | $ | 2,954 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,954 |
December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities and obligations of U.S. government corporations and agencies |  | $ | 208,598 |  |  | $ | 80 |  |  | $ | (4,863 | ) |  | $ | 203,815 |
Obligations of states and political subdivisions |  |  | 383,991 |  |  |  | 12,123 |  |  |  | (657 | ) |  |  | 395,457 |
Mortgage-backed securities: GSE residential |  |  | 799,456 |  |  |  | 4,292 |  |  |  | (12,710 | ) |  |  | 791,038 |
Other securities |  |  | 30,546 |  |  |  | 671 |  |  |  | (105 | ) |  |  | 31,112 |
Total available-for-sale |  | $ | 1,422,591 |  |  | $ | 17,166 |  |  | $ | (18,335 | ) |  | $ | 1,421,422 |
Held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities and obligations of U.S. government corporations and agencies |  | $ | 5,001 |  |  | $ | 5 |  |  | $ | — |  |  | $ | 5,006 |
Other securities |  |  | 2,029 |  |  |  | — |  |  |  | — |  |  |  | 2,029 |
Total held-to-maturity |  | $ | 7,030 |  |  | $ | 5 |  |  | $ | — |  |  | $ | 7,035 |
Proceeds From Sales of Available for Sale Investment Securities, Realized Gains and Losses and Income Tax Expense | Proceeds from sales of available-for-sale investment securities, realized gains and losses and income tax expense were as follows during the years ended December 31, 2022, 2021, and 2020 (in thousands):
|  | 2022 |  |  | 2021 |  |  | 2020 |
Proceeds from sales |  | $ | 36,257 |  |  | $ | 611 |  |  | $ | 9,061 |
Gross gains |  |  | 202 |  |  |  | 124 |  |  |  | 1,132 |
Gross losses |  |  | (169 | ) |  |  | — |  |  |  | (26 | )
Income tax expense |  |  | (10 | ) |  |  | 36 |  |  |  | 321 |
Investments Classified by Contractual Maturity Date | The following table indicates the expected maturities of investment securities classified as available-for-sale presented at fair value, and held-to-maturity presented at amortized cost at December 31, 2022 and the weighted average yield for each range of maturities (dollars in thousands):
|  | One |  |  | After 1 |  |  | After 5 |  |  |  |  |  |  |
|  | year or |  |  | through |  |  | through |  |  | After |  |  |  |
|  | less |  |  | 5 years |  |  | 10 years |  |  | ten years |  |  | Total |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities and obligations of U.S. government corporations and agencies |  | $ | 161,688 |  |  | $ | 49,187 |  |  | $ | 9,652 |  |  | $ | — |  |  | $ | 220,527 |
Obligations of state and political subdivisions |  |  | 19,446 |  |  |  | 76,847 |  |  |  | 190,232 |  |  |  | 1,173 |  |  |  | 287,698 |
Mortgage-backed securities: GSE residential |  |  | 4,762 |  |  |  | 97,333 |  |  |  | 524,164 |  |  |  | 1,621 |  |  |  | 627,880 |
Other securities |  |  | 20,636 |  |  |  | 60,533 |  |  |  | 1,711 |  |  |  | — |  |  |  | 82,880 |
Total available-for-sale |  | $ | 206,532 |  |  | $ | 283,900 |  |  | $ | 725,759 |  |  | $ | 2,794 |  |  | $ | 1,218,985 |
Weighted average yield |  |  | 1.56 | % |  |  | 2.44 | % |  |  | 1.75 | % |  |  | 2.92 | % |  |  | 1.87 | %
Full tax equivalent yield |  |  | 1.66 | % |  |  | 2.70 | % |  |  | 1.92 | % |  |  | 3.44 | % |  |  | 2.05 | %
Held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other securities |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,954 |  |  | $ | 2,954 |
Total held-to-maturity |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,954 |  |  | $ | 2,954 |
Weighted average yield |  |  | — | % |  |  | — | % |  |  | — | % |  |  | — | % |  |  | — | %
Full tax equivalent yield |  |  | — | % |  |  | — | % |  |  | — | % |  |  | — | % |  |  | — | %
Fair Value of Investments with Sustained Gross Unrealized Losses | The following table presents the aging of gross unrealized losses and fair value by investment category as of December 31, 2022 and 2021 (in thousands):
|  | Less than 12 months |  |  | 12 months or more |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities and obligations of U.S. government corporations and agencies |  | $ | 57,007 |  |  | $ | (3,493 | ) |  | $ | 163,520 |  |  | $ | (28,914 | ) |  | $ | 220,527 |  |  | $ | (32,407 | )
Obligations of states and political subdivisions |  |  | 220,102 |  |  |  | (43,221 | ) |  |  | 45,419 |  |  |  | (16,624 | ) |  |  | 265,521 |  |  |  | (59,845 | )
Mortgage-backed securities: GSE residential |  |  | 165,966 |  |  |  | (19,859 | ) |  |  | 461,446 |  |  |  | (96,900 | ) |  |  | 627,412 |  |  |  | (116,759 | )
Other securities |  |  | 64,676 |  |  |  | (3,675 | ) |  |  | 6,698 |  |  |  | (844 | ) |  |  | 71,374 |  |  |  | (4,519 | )
Total |  | $ | 507,751 |  |  | $ | (70,248 | ) |  | $ | 677,083 |  |  | $ | (143,282 | ) |  | $ | 1,184,834 |  |  | $ | (213,530 | )
December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities and obligations of U.S. government corporations and agencies |  | $ | 48,316 |  |  | $ | (1,927 | ) |  | $ | 139,846 |  |  | $ | (2,936 | ) |  | $ | 188,162 |  |  | $ | (4,863 | )
Obligations of states and political subdivisions |  |  | 61,535 |  |  |  | (657 | ) |  |  | — |  |  |  | — |  |  |  | 61,535 |  |  |  | (657 | )
Mortgage-backed securities: GSE residential |  |  | 562,699 |  |  |  | (11,019 | ) |  |  | 46,504 |  |  |  | (1,691 | ) |  |  | 609,203 |  |  |  | (12,710 | )
Other securities |  |  | 7,976 |  |  |  | (105 | ) |  |  | — |  |  |  | — |  |  |  | 7,976 |  |  |  | (105 | )
Total |  | $ | 680,526 |  |  | $ | (13,708 | ) |  | $ | 186,350 |  |  | $ | (4,627 | ) |  | $ | 866,876 |  |  | $ | (18,335 | )
Maturities of Investment Securities | Maturities of investment securities were as follows at December 31, 2022 (in thousands):
|  | Amortized |  |  | Estimated |
|  | Cost |  |  | Fair Value |
Available-for-sale: |  |  |  |  |  |
Due in one year or less |  | $ | 228,998 |  |  | $ | 201,770 |
Due after one-five years |  |  | 203,048 |  |  |  | 186,567 |
Due after five-ten years |  |  | 254,473 |  |  |  | 201,595 |
Due after ten years |  |  | 1,217 |  |  |  | 1,173 |
|  |  | 687,736 |  |  |  | 591,105 |
Mortgage-backed securities: GSE residential |  |  | 744,636 |  |  |  | 627,880 |
Total available-for-sale |  | $ | 1,432,372 |  |  | $ | 1,218,985 |
Held-to-maturity: |  |  |  |  |  |
Due in one year or less |  | $ | — |  |  | $ | — |
Due after ten years |  |  | 2,954 |  |  |  | 2,954 |
Total held-to-maturity |  | $ | 2,954 |  |  | $ | 2,954 |

X
- Definition Tabular disclosure of available-for-sale and held-for-maturity securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures. + References No definition available. + Details
Name: | fmbh_AvailableForSaleAndHeldForMaturitySecuritiesTableTextBlock
Namespace Prefix: | fmbh_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Table Text Block] + References No definition available. + Details
Name: | fmbh_AvailableForSaleSecuritiesDebtMaturitiesFairValueFiscalYearMaturityTableTextBlock
Namespace Prefix: | fmbh_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
Name: | us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of realized gains and losses on investments reported in the statement of income. + References No definition available. + Details
Name: | us-gaap_RealizedGainLossOnInvestmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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 https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563 + Details
Name: | us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration