v2.4.0.6

Loans and Allowance for Loan Losses, Part II (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Minimum Balance Of Loans For Which Credit Quality Analysis Is Performed | $ 100 |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
30 to 59 Days Past Due | 2,737 | 2,899 |
60 to 89 Days Past Due | 1,303 | 521 |
90 Days or More Past Due | 2,204 | 3,263 |
Total Past Due | 6,244 | 6,683 |
Current | 904,821 | 853,391 |
Total Loans Receivable | 911,065 | 860,074 |
Total Loans Greater than 90 Days Past Due and Still Accruing | 0 | 0 |
Number of days past due when interest is not accrued | ninety days |  |
Period of satisfactory performance before returning to accrual status | six months |  |
Loans with a specific allowance [Abstract] |  |  |
Recorded Balance | 2,060 | 2,700 |
Unpaid Principal Balance | 2,562 | 3,216 |
Specific Allowance | 511 | 575 |
Loans without a specific allowance [Abstract] |  |  |
Recorded Balance | 5,533 | 4,740 |
Unpaid Principal Balance | 6,794 | 5,554 |
Total Loans [Abstract] |  |  |
Recorded Balance | 7,593 | 7,440 |
Unpaid Principal Balance | 9,356 | 8,770 |
Average recorded investment and interest income recognized [Abstract] |  |  |
Average investment in impaired loans | 7,871 | 7,698 | 13,282
Interest income recognized | 22 | 36 | 75
Balances of Nonaccrual Loans [Abstract] |  |  |
Recorded balance of nonaccrual loans | 7,573 | 6,723 |
Interest Lost on Nonaccrual Loans | 173,000 | 239,000 | 428,000
Troubled Debt Restructuring [Abstract] |  |  |
Troubled Debt Restructurings Balance | 3,339 | 1,834 |
Troubled Debt Restructuring, Allowance | 295 | 140 |
Number of restructured notes | 2 |  |
Number of non-accrual notes | 3 |  |
Recorded Balance of Troubled Debt Restructurings [Abstract] |  |  |
Troubled Debt Restructurings Balance | 3,339 | 1,834 |
Financing Receivable Modifications Performing Recorded Investment | 20 | 717 |
Subsequent Default, Number of Contracts |  | 2 |
Subsequent Default, Troubled Debt Restructurings |  | 215 |
Pass [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 865,059 | 809,177 |
Watch [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 31,994 | 31,945 |
Substandard [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 14,012 | 18,952 |
Doubtful [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 0 |
Construction and land development |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
30 to 59 Days Past Due | 0 | 0 |
60 to 89 Days Past Due | 53 | 0 |
90 Days or More Past Due | 0 | 0 |
Total Past Due | 53 | 0 |
Current | 31,288 | 23,136 |
Total Loans Receivable | 31,341 | 23,136 |
Total Loans Greater than 90 Days Past Due and Still Accruing | 0 | 0 |
Loans with a specific allowance [Abstract] |  |  |
Recorded Balance | 1,114 | 833 |
Unpaid Principal Balance | 1,529 | 1,070 |
Specific Allowance | 295 | 295 |
Loans without a specific allowance [Abstract] |  |  |
Recorded Balance | 408 | 0 |
Unpaid Principal Balance | 694 | 0 |
Total Loans [Abstract] |  |  |
Recorded Balance | 1,522 | 833 |
Unpaid Principal Balance | 2,223 | 1,070 |
Average recorded investment and interest income recognized [Abstract] |  |  |
Average investment in impaired loans | 1,520 | 841 | 1,975
Interest income recognized | 0 | 0 | 0
Balances of Nonaccrual Loans [Abstract] |  |  |
Recorded balance of nonaccrual loans | 1,522 | 833 |
Troubled Debt Restructuring [Abstract] |  |  |
Troubled Debt Restructurings Balance | 1,522 | 0 |
Number of restructured notes | 4 |  |
Recorded Balance of Troubled Debt Restructurings [Abstract] |  |  |
Troubled Debt Restructurings Balance | 1,522 | 0 |
Construction and land development | Pass [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 27,217 | 19,708 |
Construction and land development | Watch [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 2,135 | 2,168 |
Construction and land development | Substandard [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 1,989 | 1,260 |
Construction and land development | Doubtful [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 0 |
Farm loans |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
30 to 59 Days Past Due | 592 | 377 |
60 to 89 Days Past Due | 0 | 111 |
90 Days or More Past Due | 293 | 737 |
Total Past Due | 885 | 1,225 |
Current | 85,386 | 71,360 |
Total Loans Receivable | 86,271 | 72,585 |
Total Loans Greater than 90 Days Past Due and Still Accruing | 0 | 0 |
Loans with a specific allowance [Abstract] |  |  |
Recorded Balance | 0 | 0 |
Unpaid Principal Balance | 0 | 0 |
Specific Allowance | 0 | 0 |
Loans without a specific allowance [Abstract] |  |  |
Recorded Balance | 418 | 532 |
Unpaid Principal Balance | 429 | 532 |
Total Loans [Abstract] |  |  |
Recorded Balance | 418 | 532 |
Unpaid Principal Balance | 429 | 532 |
Average recorded investment and interest income recognized [Abstract] |  |  |
Average investment in impaired loans | 421 | 532 | 1,317
Interest income recognized | 0 | 0 | 0
Balances of Nonaccrual Loans [Abstract] |  |  |
Recorded balance of nonaccrual loans | 418 | 532 |
Farm loans | Pass [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 82,516 | 67,637 |
Farm loans | Watch [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 2,662 | 2,496 |
Farm loans | Substandard [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 1,093 | 2,452 |
Farm loans | Doubtful [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 0 |
1-4 Family residential properties |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
30 to 59 Days Past Due | 1,351 | 1,079 |
60 to 89 Days Past Due | 40 | 200 |
90 Days or More Past Due | 944 | 1,033 |
Total Past Due | 2,335 | 2,312 |
Current | 184,163 | 179,537 |
Total Loans Receivable | 186,498 | 181,849 |
Total Loans Greater than 90 Days Past Due and Still Accruing | 0 | 0 |
Loans with a specific allowance [Abstract] |  |  |
Recorded Balance | 636 | 71 |
Unpaid Principal Balance | 723 | 71 |
Specific Allowance | 162 | 27 |
Loans without a specific allowance [Abstract] |  |  |
Recorded Balance | 1,269 | 1,641 |
Unpaid Principal Balance | 1,792 | 1,818 |
Total Loans [Abstract] |  |  |
Recorded Balance | 1,905 | 1,712 |
Unpaid Principal Balance | 2,515 | 1,889 |
Average recorded investment and interest income recognized [Abstract] |  |  |
Average investment in impaired loans | 1,948 | 1,755 | 2,720
Interest income recognized | 7 | 0 | 0
Loans Receivable, Modifications, Still Accruing Interest | 6 |  |
Balances of Nonaccrual Loans [Abstract] |  |  |
Recorded balance of nonaccrual loans | 1,899 | 1,712 |
Troubled Debt Restructuring [Abstract] |  |  |
Troubled Debt Restructurings Balance | 445 | 393 |
Number of restructured notes | 1 |  |
Extension period of modified loan | 6 |  |
Recorded Balance of Troubled Debt Restructurings [Abstract] |  |  |
Troubled Debt Restructurings Balance | 445 | 393 |
Financing Receivable Modifications Performing Recorded Investment | 6 | 0 |
1-4 Family residential properties | Pass [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 183,880 | 180,247 |
1-4 Family residential properties | Watch [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 424 | 497 |
1-4 Family residential properties | Substandard [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 2,194 | 1,105 |
1-4 Family residential properties | Doubtful [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 0 |
Multifamily residential properties |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
30 to 59 Days Past Due | 0 | 0 |
60 to 89 Days Past Due | 0 | 0 |
90 Days or More Past Due | 0 | 0 |
Total Past Due | 0 | 0 |
Current | 44,863 | 19,846 |
Total Loans Receivable | 44,863 | 19,846 |
Total Loans Greater than 90 Days Past Due and Still Accruing | 0 | 0 |
Loans with a specific allowance [Abstract] |  |  |
Recorded Balance | 0 | 0 |
Unpaid Principal Balance | 0 | 0 |
Specific Allowance | 0 | 0 |
Loans without a specific allowance [Abstract] |  |  |
Recorded Balance | 0 | 0 |
Unpaid Principal Balance | 0 | 0 |
Total Loans [Abstract] |  |  |
Recorded Balance | 0 | 0 |
Unpaid Principal Balance | 0 | 0 |
Average recorded investment and interest income recognized [Abstract] |  |  |
Average investment in impaired loans | 0 | 0 | 670
Interest income recognized | 0 | 0 | 0
Balances of Nonaccrual Loans [Abstract] |  |  |
Recorded balance of nonaccrual loans | 0 | 0 |
Multifamily residential properties | Pass [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 44,863 | 19,638 |
Multifamily residential properties | Watch [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 0 |
Multifamily residential properties | Substandard [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 208 |
Multifamily residential properties | Doubtful [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 0 |
Commercial real estate |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
30 to 59 Days Past Due | 262 | 399 |
60 to 89 Days Past Due | 911 | 101 |
90 Days or More Past Due | 255 | 228 |
Total Past Due | 1,428 | 728 |
Current | 314,894 | 320,273 |
Total Loans Receivable | 316,322 | 321,001 |
Total Loans Greater than 90 Days Past Due and Still Accruing | 0 | 0 |
Loans with a specific allowance [Abstract] |  |  |
Recorded Balance | 0 | 1,414 |
Unpaid Principal Balance | 0 | 1,693 |
Specific Allowance | 0 | 183 |
Loans without a specific allowance [Abstract] |  |  |
Recorded Balance | 2,063 | 1,226 |
Unpaid Principal Balance | 2,253 | 1,256 |
Total Loans [Abstract] |  |  |
Recorded Balance | 2,063 | 2,640 |
Unpaid Principal Balance | 2,253 | 2,949 |
Average recorded investment and interest income recognized [Abstract] |  |  |
Average investment in impaired loans | 2,100 | 2,688 | 4,425
Interest income recognized | 0 | 22 | 56
Loans Receivable, Modifications, Still Accruing Interest | 0 | 395 |
Balances of Nonaccrual Loans [Abstract] |  |  |
Recorded balance of nonaccrual loans | 2,063 | 2,245 |
Troubled Debt Restructuring [Abstract] |  |  |
Troubled Debt Restructurings Balance | 950 | 952 |
Number of restructured notes |  | 1 |
Recorded Balance of Troubled Debt Restructurings [Abstract] |  |  |
Troubled Debt Restructurings Balance | 950 | 952 |
Financing Receivable Modifications Performing Recorded Investment | 0 | 395 |
Commercial real estate | Pass [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 287,794 | 288,539 |
Commercial real estate | Watch [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 24,213 | 24,664 |
Commercial real estate | Substandard [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 4,315 | 7,798 |
Commercial real estate | Doubtful [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 0 |
Loans secured by real estate |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
30 to 59 Days Past Due | 2,205 | 1,855 |
60 to 89 Days Past Due | 1,004 | 412 |
90 Days or More Past Due | 1,492 | 1,998 |
Total Past Due | 4,701 | 4,265 |
Current | 660,594 | 614,152 |
Total Loans Receivable | 665,295 | 618,417 |
Total Loans Greater than 90 Days Past Due and Still Accruing | 0 | 0 |
Loans with a specific allowance [Abstract] |  |  |
Recorded Balance | 1,750 | 2,318 |
Unpaid Principal Balance | 2,252 | 2,834 |
Specific Allowance | 457 | 505 |
Loans without a specific allowance [Abstract] |  |  |
Recorded Balance | 4,158 | 3,399 |
Unpaid Principal Balance | 5,168 | 3,606 |
Total Loans [Abstract] |  |  |
Recorded Balance | 5,908 | 5,717 |
Unpaid Principal Balance | 7,420 | 6,440 |
Average recorded investment and interest income recognized [Abstract] |  |  |
Average investment in impaired loans | 5,989 | 5,816 | 11,107
Interest income recognized | 7 | 22 | 56
Balances of Nonaccrual Loans [Abstract] |  |  |
Recorded balance of nonaccrual loans | 5,902 | 5,322 |
Troubled Debt Restructuring [Abstract] |  |  |
Troubled Debt Restructurings Balance | 2,917 | 1,345 |
Recorded Balance of Troubled Debt Restructurings [Abstract] |  |  |
Troubled Debt Restructurings Balance | 2,917 | 1,345 |
Financing Receivable Modifications Performing Recorded Investment | 6 | 395 |
Agricultural loans |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
30 to 59 Days Past Due | 0 | 0 |
60 to 89 Days Past Due | 0 | 0 |
90 Days or More Past Due | 620 | 673 |
Total Past Due | 620 | 673 |
Current | 60,394 | 62,584 |
Total Loans Receivable | 61,014 | 63,257 |
Total Loans Greater than 90 Days Past Due and Still Accruing | 0 | 0 |
Loans with a specific allowance [Abstract] |  |  |
Recorded Balance | 310 | 0 |
Unpaid Principal Balance | 310 | 0 |
Specific Allowance | 54 | 0 |
Loans without a specific allowance [Abstract] |  |  |
Recorded Balance | 620 | 673 |
Unpaid Principal Balance | 1,568 | 673 |
Total Loans [Abstract] |  |  |
Recorded Balance | 930 | 673 |
Unpaid Principal Balance | 1,878 | 673 |
Average recorded investment and interest income recognized [Abstract] |  |  |
Average investment in impaired loans | 1,071 | 673 | 993
Interest income recognized | 0 | 0 | 0
Balances of Nonaccrual Loans [Abstract] |  |  |
Recorded balance of nonaccrual loans | 930 | 673 |
Agricultural loans | Pass [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 56,899 | 58,133 |
Agricultural loans | Watch [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 958 | 1,840 |
Agricultural loans | Substandard [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 3,157 | 3,284 |
Agricultural loans | Doubtful [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 0 |
Commercial and industrial loans |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
30 to 59 Days Past Due | 413 | 950 |
60 to 89 Days Past Due | 275 | 73 |
90 Days or More Past Due | 53 | 585 |
Total Past Due | 741 | 1,608 |
Current | 159,558 | 149,108 |
Total Loans Receivable | 160,299 | 150,716 |
Total Loans Greater than 90 Days Past Due and Still Accruing | 0 | 0 |
Loans with a specific allowance [Abstract] |  |  |
Recorded Balance | 0 | 382 |
Unpaid Principal Balance | 0 | 382 |
Specific Allowance | 0 | 70 |
Loans without a specific allowance [Abstract] |  |  |
Recorded Balance | 704 | 660 |
Unpaid Principal Balance | 0 | 1,255 |
Total Loans [Abstract] |  |  |
Recorded Balance | 704 | 1,042 |
Unpaid Principal Balance | 0 | 1,637 |
Average recorded investment and interest income recognized [Abstract] |  |  |
Average investment in impaired loans | 755 | 1,199 | 1,165
Interest income recognized | 0 | 14 | 19
Loans Receivable, Modifications, Still Accruing Interest | 0 |  |
Balances of Nonaccrual Loans [Abstract] |  |  |
Recorded balance of nonaccrual loans | 704 | 720 |
Troubled Debt Restructuring [Abstract] |  |  |
Troubled Debt Restructurings Balance | 408 | 489 |
Number of restructured notes | 4 | 1 |
Percentage of loans guaranteed by the Small Business Administration | 75.00% |  |
Recorded Balance of Troubled Debt Restructurings [Abstract] |  |  |
Troubled Debt Restructurings Balance | 408 | 489 |
Financing Receivable Modifications Performing Recorded Investment | 0 | 322 |
Commercial and industrial loans | Pass [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 157,461 | 147,591 |
Commercial and industrial loans | Watch [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 1,588 | 280 |
Commercial and industrial loans | Substandard [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 1,250 | 2,845 |
Commercial and industrial loans | Doubtful [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 0 |
Consumer loans |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
30 to 59 Days Past Due | 119 | 94 |
60 to 89 Days Past Due | 24 | 36 |
90 Days or More Past Due | 39 | 7 |
Total Past Due | 182 | 137 |
Current | 16,082 | 16,134 |
Total Loans Receivable | 16,264 | 16,271 |
Total Loans Greater than 90 Days Past Due and Still Accruing | 0 | 0 |
Loans with a specific allowance [Abstract] |  |  |
Recorded Balance | 0 | 0 |
Unpaid Principal Balance | 0 | 0 |
Specific Allowance | 0 | 0 |
Loans without a specific allowance [Abstract] |  |  |
Recorded Balance | 51 | 8 |
Unpaid Principal Balance | 58 | 20 |
Total Loans [Abstract] |  |  |
Recorded Balance | 51 | 8 |
Unpaid Principal Balance | 58 | 20 |
Average recorded investment and interest income recognized [Abstract] |  |  |
Average investment in impaired loans | 56 | 10 | 17
Interest income recognized | 15 | 0 | 0
Loans Receivable, Modifications, Still Accruing Interest | 14 |  |
Balances of Nonaccrual Loans [Abstract] |  |  |
Recorded balance of nonaccrual loans | 37 | 8 |
Troubled Debt Restructuring [Abstract] |  |  |
Troubled Debt Restructurings Balance | 14 | 0 |
Number of restructured notes | 1 |  |
Recorded Balance of Troubled Debt Restructurings [Abstract] |  |  |
Troubled Debt Restructurings Balance | 14 | 0 |
Financing Receivable Modifications Performing Recorded Investment | 14 | 0 |
Consumer loans | Pass [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 16,236 | 16,271 |
Consumer loans | Watch [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 14 | 0 |
Consumer loans | Substandard [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 14 | 0 |
Consumer loans | Doubtful [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 0 |
All other loans |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
30 to 59 Days Past Due | 0 | 0 |
60 to 89 Days Past Due | 0 | 0 |
90 Days or More Past Due | 0 | 0 |
Total Past Due | 0 | 0 |
Current | 8,193 | 11,413 |
Total Loans Receivable | 8,193 | 11,413 |
Total Loans Greater than 90 Days Past Due and Still Accruing | 0 | 0 |
Loans with a specific allowance [Abstract] |  |  |
Recorded Balance | 0 | 0 |
Unpaid Principal Balance | 0 | 0 |
Specific Allowance | 0 | 0 |
Loans without a specific allowance [Abstract] |  |  |
Recorded Balance | 0 | 0 |
Unpaid Principal Balance | 0 | 0 |
Total Loans [Abstract] |  |  |
Recorded Balance | 0 | 0 |
Unpaid Principal Balance | 0 | 0 |
Average recorded investment and interest income recognized [Abstract] |  |  |
Average investment in impaired loans | 0 | 0 | 0
Interest income recognized | 0 | 0 | 0
Balances of Nonaccrual Loans [Abstract] |  |  |
Recorded balance of nonaccrual loans | 0 | 0 |
All other loans | Pass [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 8,193 | 11,413 |
All other loans | Watch [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 0 |
All other loans | Substandard [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | 0 | 0 |
All other loans | Doubtful [Member] |  |  |
Loans Receivable Aging Analysis [Abstract] |  |  |
Total Loans Receivable | $ 0 | $ 0 |

X
- Details
Name: | fmbh_BalancesOfNonaccrualLoansAbstract
Namespace Prefix: | fmbh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maturity date extension period for a troubled debt restructuring modified loan. + References No definition available. + Details
Name: | fmbh_ExtensionPeriodOfModifiedLoan
Namespace Prefix: | fmbh_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings and are still accruing interest. + References No definition available. + Details
Name: | fmbh_FinancingReceivableModificationsPerformingRecordedInvestment
Namespace Prefix: | fmbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Loans and Leases Receivable, Including Held for Sale, Net of Deferred Income + References No definition available. + Details
Name: | fmbh_LoansAndLeasesReceivableIncludingHeldForSaleNetOfDeferredIncome
Namespace Prefix: | fmbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The allowance for loan losses related to financing receivables that have been modified by troubled debt restructurings. + References No definition available. + Details
Name: | fmbh_LoansReceivableModificationsAllowance
Namespace Prefix: | fmbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of investment related to financing receivables modified by troubled debt restructurings that are still accruing interest. + References No definition available. + Details
Name: | fmbh_LoansReceivableModificationsStillAccruingInterest
Namespace Prefix: | fmbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | fmbh_LoansWithoutSpecificAllowanceAbstract
Namespace Prefix: | fmbh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | fmbh_LoansWithSpecificAllowanceAbstract
Namespace Prefix: | fmbh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum balance of loans for which credit quality analysis is performed. + References No definition available. + Details
Name: | fmbh_MinimumBalanceOfLoansForWhichCreditQualityAnalysisIsPerformed
Namespace Prefix: | fmbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The number of days past due when the Company discontinues the accrual of interest income for the loan. + References No definition available. + Details
Name: | fmbh_NumberOfDaysPastDueWhenInterestIsNotAccrued
Namespace Prefix: | fmbh_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of non-accrual notes restructured during the period, not considered troubled debt restructuring. + References No definition available. + Details
Name: | fmbh_NumberOfNonAccrualNotes
Namespace Prefix: | fmbh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of loans guaranteed by the Small Business Administration. + References No definition available. + Details
Name: | fmbh_PercentageOfLoansGuaranteedBySmallBusinessAdministration
Namespace Prefix: | fmbh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum time period of satisfactory performance before returning a nonaccrual loan to accrual status. + References No definition available. + Details
Name: | fmbh_PeriodOfSatisfactoryPerformanceBeforeReturningToAccrualStatus
Namespace Prefix: | fmbh_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | fmbh_RecordedBalanceOfTroubledDebtRestructuringsAbstract
Namespace Prefix: | fmbh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | fmbh_TotalImpairedLoansReceivableAbstract
Namespace Prefix: | fmbh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6951948&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953682-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953682-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing receivables that are less than 60 days past due but more than 29 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing receivables that are less than 90 days past due but more than 59 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentAgingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing receivables that are current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing receivables that are equal to or greater than 90 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Section 563c.102 -Paragraph 8 -Subparagraph j(ii) -Chapter V -Subsection I -LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 15 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph g -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_TroubledDebtRestructuringNoteDebtorAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration