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Note 3 - Loans Leases Receivable - Impaired Loans Leases (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Dec. 31, 2017
Recorded investment with no specific allowance recorded | $ 5,375,325 |  | $ 5,375,325 | $ 7,117,268
Unpaid principal balance with no specific allowance recorded | 5,464,380 |  | 5,464,380 | 7,202,484
Average recorded investment with no specific allowance recorded | 6,023,781 | $ 5,411,867 | 6,457,254 |
Interest income recognized with no specific allowance recorded | 67,588 | 48,566 | 159,525 |
Interest income recognized for cash payments received with no specific allowance recorded | 67,588 | 48,566 | 159,525 |
Recorded investment with specific allowance recorded | 7,337,070 |  | 7,337,070 | 11,236,897
Unpaid principal balance with specific allowance recorded | 7,360,146 |  | 7,360,146 | 11,240,836
Related allowance | 3,139,565 |  | 3,139,565 | 3,043,319
Average recorded investment with specific allowance recorded | 7,185,239 | 14,108,264 | 6,903,756 |
Interest income recognized with specific allowance recorded | 5,014 | 38,044 | 6,052 |
Interest income recognized for cash payments received with specific allowance recorded | 5,014 | 38,044 | 6,052 |
Recorded investment | 12,712,395 |  | 12,712,395 | 18,354,163
Unpaid principal balance | 12,824,526 |  | 12,824,526 | 18,443,318
Average recorded investment | 13,209,020 | 19,520,131 | 13,361,010 |
Interest income recognized | 72,602 | 86,610 | 165,577 |
Interest income recognized for cash payments received | 72,602 | 86,610 | 165,577 |
Commercial Portfolio Segment [Member] |  |  |  |
Recorded investment with no specific allowance recorded | 1,159,577 |  | 1,159,577 | 1,634,269
Unpaid principal balance with no specific allowance recorded | 1,173,853 |  | 1,173,853 | 1,644,706
Average recorded investment with no specific allowance recorded | 1,400,498 | 805,309 | 1,465,402 |
Interest income recognized with no specific allowance recorded | 59,176 | 9,399 | 138,543 |
Interest income recognized for cash payments received with no specific allowance recorded | 59,176 | 9,399 | 138,543 |
Recorded investment with specific allowance recorded | 391,868 |  | 391,868 | 4,613,940
Unpaid principal balance with specific allowance recorded | 391,868 |  | 391,868 | 4,617,879
Related allowance | 308,091 |  | 308,091 | 715,627
Average recorded investment with specific allowance recorded | 353,153 | 8,066,702 | 327,859 |
Interest income recognized with specific allowance recorded | 1,978 | 35,055 |  |
Interest income recognized for cash payments received with specific allowance recorded | 1,978 | 35,055 |  |
Recorded investment | 1,551,445 |  | 1,551,445 | 6,248,209
Unpaid principal balance | 1,565,721 |  | 1,565,721 | 6,262,585
Average recorded investment | 1,753,651 | 8,872,011 | 1,793,261 |
Interest income recognized | 61,154 | 44,454 | 138,543 |
Interest income recognized for cash payments received | 61,154 | 44,454 | 138,543 |
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate Loans [Member] |  |  |  |
Recorded investment with no specific allowance recorded | 288,813 |  | 288,813 | 289,261
Unpaid principal balance with no specific allowance recorded | 288,813 |  | 288,813 | 289,261
Average recorded investment with no specific allowance recorded | 289,036 |  | 289,112 |
Interest income recognized with no specific allowance recorded | 5,868 |  | 11,690 |
Interest income recognized for cash payments received with no specific allowance recorded | 5,868 |  | 11,690 |
Recorded investment with specific allowance recorded | 142,788 |  | 142,788 | 151,962
Unpaid principal balance with specific allowance recorded | 142,788 |  | 142,788 | 151,962
Related allowance | 39,288 |  | 39,288 | 48,462
Average recorded investment with specific allowance recorded | 145,082 | 238,584 | 147,375 |
Recorded investment | 431,601 |  | 431,601 | 441,222
Unpaid principal balance | 431,601 |  | 431,601 | 441,222
Average recorded investment | 434,118 | 238,584 | 436,487 |
Interest income recognized | 5,868 |  | 11,690 |
Interest income recognized for cash payments received | 5,868 |  | 11,690 |
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |
Recorded investment with specific allowance recorded | 5,553,396 |  | 5,553,396 | 4,844,312
Unpaid principal balance with specific allowance recorded | 5,553,396 |  | 5,553,396 | 4,844,312
Related allowance | 2,070,086 |  | 2,070,086 | 1,379,235
Average recorded investment with specific allowance recorded | 5,491,832 | 4,348,142 | 5,275,992 |
Recorded investment | 5,553,396 |  | 5,553,396 | 4,844,312
Unpaid principal balance | 5,553,396 |  | 5,553,396 | 4,844,312
Average recorded investment | 5,491,832 | 4,348,142 | 5,275,992 |
Commercial Real Estate Portfolio Segment [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member] |  |  |  |
Recorded investment with no specific allowance recorded | 982,428 |  | 982,428 | 1,171,565
Unpaid principal balance with no specific allowance recorded | 982,428 |  | 982,428 | 1,171,565
Average recorded investment with no specific allowance recorded | 1,105,004 | 1,160,161 | 1,151,245 |
Recorded investment with specific allowance recorded |  |  |  | 72,163
Unpaid principal balance with specific allowance recorded |  |  |  | 72,163
Related allowance |  |  |  | 1,763
Average recorded investment with specific allowance recorded |  | 38,260 |  |
Recorded investment | 982,428 |  | 982,428 | 1,243,728
Unpaid principal balance | 982,428 |  | 982,428 | 1,243,728
Average recorded investment | 1,105,004 | 1,198,421 | 1,151,245 |
Finance Leases Portfolio Segment [Member] |  |  |  |
Recorded investment with no specific allowance recorded | 1,903,173 |  | 1,903,173 | 2,944,540
Unpaid principal balance with no specific allowance recorded | 1,903,173 |  | 1,903,173 | 2,944,540
Average recorded investment with no specific allowance recorded | 2,198,852 | 2,560,019 | 2,551,149 |
Interest income recognized with no specific allowance recorded | 2,544 | 38,949 | 9,292 |
Interest income recognized for cash payments received with no specific allowance recorded | 2,544 | 38,949 | 9,292 |
Recorded investment with specific allowance recorded | 625,831 |  | 625,831 | 724,953
Unpaid principal balance with specific allowance recorded | 625,831 |  | 625,831 | 724,953
Related allowance | 375,803 |  | 375,803 | 504,469
Average recorded investment with specific allowance recorded | 566,063 | 757,602 | 521,142 |
Recorded investment | 2,529,004 |  | 2,529,004 | 3,669,492
Unpaid principal balance | 2,529,004 |  | 2,529,004 | 3,669,492
Average recorded investment | 2,764,915 | 3,317,621 | 3,072,291 |
Interest income recognized | 2,544 | 38,949 | 9,292 |
Interest income recognized for cash payments received | 2,544 | 38,949 | 9,292 |
Residential Portfolio Segment [Member] |  |  |  |
Recorded investment with no specific allowance recorded | 941,520 |  | 941,520 | 943,388
Unpaid principal balance with no specific allowance recorded | 1,016,299 |  | 1,016,299 | 1,018,167
Average recorded investment with no specific allowance recorded | 928,809 | 712,793 | 904,898 |
Recorded investment with specific allowance recorded | 508,346 |  | 508,346 | 761,458
Unpaid principal balance with specific allowance recorded | 531,422 |  | 531,422 | 761,458
Related allowance | 239,419 |  | 239,419 | 355,167
Average recorded investment with specific allowance recorded | 512,222 | 624,641 | 522,134 |
Interest income recognized with specific allowance recorded | 2,959 | 2,989 | 5,893 |
Interest income recognized for cash payments received with specific allowance recorded | 2,959 | 2,989 | 5,893 |
Recorded investment | 1,449,866 |  | 1,449,866 | 1,704,846
Unpaid principal balance | 1,547,721 |  | 1,547,721 | 1,779,625
Average recorded investment | 1,441,031 | 1,337,434 | 1,427,032 |
Interest income recognized | 2,959 | 2,989 | 5,893 |
Interest income recognized for cash payments received | 2,959 | 2,989 | 5,893 |
Consumer Portfolio Segment [Member] |  |  |  |
Recorded investment with no specific allowance recorded | 99,814 |  | 99,814 | 134,245
Unpaid principal balance with no specific allowance recorded | 99,814 |  | 99,814 | 134,245
Average recorded investment with no specific allowance recorded | 101,582 | 173,585 | 95,448 |
Interest income recognized with no specific allowance recorded |  | 218 |  |
Interest income recognized for cash payments received with no specific allowance recorded |  | 218 |  |
Recorded investment with specific allowance recorded | 114,841 |  | 114,841 | 68,109
Unpaid principal balance with specific allowance recorded | 114,841 |  | 114,841 | 68,109
Related allowance | 106,878 |  | 106,878 | 38,596
Average recorded investment with specific allowance recorded | 116,887 | 34,333 | 109,254 |
Interest income recognized with specific allowance recorded | 76 |  | 159 |
Interest income recognized for cash payments received with specific allowance recorded | 76 |  | 159 |
Recorded investment | 214,655 |  | 214,655 | 202,354
Unpaid principal balance | 214,655 |  | 214,655 | $ 202,354
Average recorded investment | 218,469 | 207,918 | 204,702 |
Interest income recognized | 76 | 218 | 159 |
Interest income recognized for cash payments received | $ 76 | $ 218 | $ 159 |

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