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Note 4 - Loans/Leases Receivable (Details) - Impaired Loans/Leases - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Impaired Loans/Leases with No Specific Allowance Recorded: |  |  |
Recorded investment with no specific allowance recorded | $ 3,932,541 | $ 3,073,364 | $ 6,757,674
Unpaid principal balance with no specific allowance recorded | 4,402,147 | 3,576,870 | 7,057,203
Average recorded investment with no specific allowance recorded | 6,656,069 | 10,686,930 | 11,583,623
Interest income recognized with no specific allowance recorded | 25,070 | 55,825 | 74,982
Interest income recognized for cash payments received with no specific allowance recorded | 25,070 | 55,825 | 74,982
Impaired Loans/Leases with Specific Allowance Recorded: |  |  |
Recorded investment with specific allowance recorded | 7,090,846 | 15,875,761 | 12,322,746
Unpaid principal balance with specific allowance recorded | 7,106,685 | 18,008,843 | 13,838,755
Related allowance | 3,304,287 | 5,244,673 | 5,008,822
Average recorded investment with specific allowance recorded | 6,383,114 | 9,684,123 | 11,252,892
Interest income recognized with specific allowance recorded | 13,606 | 21,368 | 92,374
Interest income recognized for cash payments received with specific allowance recorded | 13,606 | 21,368 | 92,374
Total Impaired Loans/Leases: |  |  |
Recorded investment | 11,023,387 | 18,949,125 | 19,080,420
Unpaid principal balance | 11,508,832 | 21,585,713 | 20,895,958
Related allowance | 3,304,287 | 5,244,673 | 5,008,822
Average recorded investment | 13,039,183 | 20,371,053 | 22,836,515
Interest income recognized | 38,676 | 77,193 | 167,356
Interest income recognized for cash payments received | 38,676 | 77,193 | 167,356
Commercial Portfolio Segment [Member] |  |  |
Impaired Loans/Leases with No Specific Allowance Recorded: |  |  |
Recorded investment with no specific allowance recorded | 234,636 | 246,308 | 492,622
Unpaid principal balance with no specific allowance recorded | 346,072 | 342,391 | 568,951
Average recorded investment with no specific allowance recorded | 380,495 | 525,543 | 747,134
Interest income recognized with no specific allowance recorded | 7,436 | 7,599 | 7,749
Interest income recognized for cash payments received with no specific allowance recorded | 7,436 | 7,599 | 7,749
Impaired Loans/Leases with Specific Allowance Recorded: |  |  |
Recorded investment with specific allowance recorded | 5,051,846 | 7,033,401 | 1,269,228
Unpaid principal balance with specific allowance recorded | 5,055,685 | 8,190,495 | 1,956,755
Related allowance | 2,592,270 | 3,300,199 | 927,453
Average recorded investment with specific allowance recorded | 4,811,046 | 3,159,985 | 1,222,449
Interest income recognized with specific allowance recorded |  | 14,837 | 33,703
Interest income recognized for cash payments received with specific allowance recorded |  | 14,837 | 33,703
Total Impaired Loans/Leases: |  |  |
Recorded investment | 5,286,482 | 7,279,709 | 1,761,850
Unpaid principal balance | 5,401,757 | 8,532,886 | 2,525,706
Related allowance | 2,592,270 | 3,300,199 | 927,453
Average recorded investment | 5,191,541 | 3,685,528 | 1,969,583
Interest income recognized | 7,436 | 22,436 | 41,452
Interest income recognized for cash payments received | 7,436 | 22,436 | 41,452
Commercial Real Estate Portfolio Segment [Member] | Owner-occupied Commercial Real Estate Loans [Member] |  |  |
Impaired Loans/Leases with No Specific Allowance Recorded: |  |  |
Recorded investment with no specific allowance recorded | 256,761 | 67,415 | 392,542
Unpaid principal balance with no specific allowance recorded | 350,535 | 163,638 | 392,542
Average recorded investment with no specific allowance recorded | 447,144 | 548,464 | 1,881,823
Impaired Loans/Leases with Specific Allowance Recorded: |  |  |
Recorded investment with specific allowance recorded |  | 620,896 | 159,247
Unpaid principal balance with specific allowance recorded |  | 620,896 | 159,247
Related allowance |  | 4,462 | 67,498
Average recorded investment with specific allowance recorded |  | 316,743 | 87,035
Total Impaired Loans/Leases: |  |  |
Recorded investment | 256,761 | 688,311 | 551,789
Unpaid principal balance | 350,535 | 784,534 | 551,789
Related allowance |  | 4,462 | 67,498
Average recorded investment | 447,144 | 865,207 | 1,968,858
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Impaired Loans/Leases with No Specific Allowance Recorded: |  |  |
Recorded investment with no specific allowance recorded |  | 31,936 | 1,943,168
Unpaid principal balance with no specific allowance recorded | 228,818 | 143,136 | 2,054,368
Average recorded investment with no specific allowance recorded | 117,406 | 1,656,401 | 2,666,039
Impaired Loans/Leases with Specific Allowance Recorded: |  |  |
Recorded investment with specific allowance recorded | 193,804 | 337,076 | 888,547
Unpaid principal balance with specific allowance recorded | 205,804 | 577,894 | 1,011,747
Related allowance | 76,934 | 12,087 | 503,825
Average recorded investment with specific allowance recorded | 195,986 | 528,564 | 1,137,489
Interest income recognized with specific allowance recorded |  |  | 10,862
Interest income recognized for cash payments received with specific allowance recorded |  |  | 10,862
Total Impaired Loans/Leases: |  |  |
Recorded investment | 193,804 | 369,012 | 2,831,715
Unpaid principal balance | 434,622 | 721,030 | 3,066,115
Related allowance | 76,934 | 12,087 | 503,825
Average recorded investment | 313,392 | 2,184,965 | 3,803,528
Interest income recognized |  |  | 10,862
Interest income recognized for cash payments received |  |  | 10,862
Commercial Real Estate Portfolio Segment [Member] | Other Non Owner-occupied Commercial Real Estate Loans [Member] |  |  |
Impaired Loans/Leases with No Specific Allowance Recorded: |  |  |
Recorded investment with no specific allowance recorded | 1,578,470 | 491,717 | 1,790,279
Unpaid principal balance with no specific allowance recorded | 1,578,470 | 491,717 | 1,902,279
Average recorded investment with no specific allowance recorded | 2,953,888 | 4,925,681 | 3,869,493
Interest income recognized with no specific allowance recorded |  | 13,283 | 58,534
Interest income recognized for cash payments received with no specific allowance recorded |  | 13,283 | 58,534
Impaired Loans/Leases with Specific Allowance Recorded: |  |  |
Recorded investment with specific allowance recorded |  | 5,884,343 | 7,783,132
Unpaid principal balance with specific allowance recorded |  | 6,583,934 | 8,488,414
Related allowance |  | 1,153,471 | 2,603,381
Average recorded investment with specific allowance recorded |  | 4,240,000 | 7,426,299
Interest income recognized with specific allowance recorded |  |  | 45,926
Interest income recognized for cash payments received with specific allowance recorded |  |  | 45,926
Total Impaired Loans/Leases: |  |  |
Recorded investment | 1,578,470 | 6,376,060 | 9,573,411
Unpaid principal balance | 1,578,470 | 7,075,651 | 10,390,693
Related allowance |  | 1,153,471 | 2,603,381
Average recorded investment | 2,953,888 | 9,165,681 | 11,295,792
Interest income recognized |  | 13,283 | 104,460
Interest income recognized for cash payments received |  | 13,283 | 104,460
Finance Leases Portfolio Segment [Member] |  |  |
Impaired Loans/Leases with No Specific Allowance Recorded: |  |  |
Recorded investment with no specific allowance recorded | 871,884 | 561,414 | 557,469
Unpaid principal balance with no specific allowance recorded | 871,884 | 561,414 | 557,469
Average recorded investment with no specific allowance recorded | 892,281 | 867,657 | 802,825
Interest income recognized with no specific allowance recorded | 4,142 | 31,911 |
Interest income recognized for cash payments received with no specific allowance recorded | 4,142 | 31,911 |
Impaired Loans/Leases with Specific Allowance Recorded: |  |  |
Recorded investment with specific allowance recorded | 829,457 | 777,858 | 336,989
Unpaid principal balance with specific allowance recorded | 829,457 | 777,858 | 336,989
Related allowance | 306,193 | 356,996 | 192,847
Average recorded investment with specific allowance recorded | 474,458 | 514,144 | 97,846
Total Impaired Loans/Leases: |  |  |
Recorded investment | 1,701,341 | 1,339,272 | 894,458
Unpaid principal balance | 1,701,341 | 1,339,272 | 894,458
Related allowance | 306,193 | 356,996 | 192,847
Average recorded investment | 1,366,739 | 1,381,801 | 900,671
Interest income recognized | 4,142 | 31,911 |
Interest income recognized for cash payments received | 4,142 | 31,911 |
Residential Portfolio Segment [Member] |  |  |
Impaired Loans/Leases with No Specific Allowance Recorded: |  |  |
Recorded investment with no specific allowance recorded | 613,486 | 1,060,770 | 1,071,927
Unpaid principal balance with no specific allowance recorded | 649,064 | 1,060,770 | 1,071,927
Average recorded investment with no specific allowance recorded | 1,047,001 | 1,269,213 | 1,010,027
Interest income recognized with no specific allowance recorded | 3,929 | 3,032 | 4,235
Interest income recognized for cash payments received with no specific allowance recorded | 3,929 | 3,032 | 4,235
Impaired Loans/Leases with Specific Allowance Recorded: |  |  |
Recorded investment with specific allowance recorded | 805,301 | 727,958 | 1,044,820
Unpaid principal balance with specific allowance recorded | 805,301 | 763,537 | 1,044,820
Related allowance | 185,801 | 151,663 | 246,266
Average recorded investment with specific allowance recorded | 712,085 | 538,678 | 641,217
Interest income recognized with specific allowance recorded | 7,913 | 2,967 | 1,883
Interest income recognized for cash payments received with specific allowance recorded | 7,913 | 2,967 | 1,883
Total Impaired Loans/Leases: |  |  |
Recorded investment | 1,418,787 | 1,788,728 | 2,116,747
Unpaid principal balance | 1,454,365 | 1,824,307 | 2,116,747
Related allowance | 185,801 | 151,663 | 246,266
Average recorded investment | 1,759,086 | 1,807,891 | 1,651,244
Interest income recognized | 11,842 | 5,999 | 6,118
Interest income recognized for cash payments received | 11,842 | 5,999 | 6,118
Consumer Portfolio Segment [Member] |  |  |
Impaired Loans/Leases with No Specific Allowance Recorded: |  |  |
Recorded investment with no specific allowance recorded | 377,304 | 613,804 | 509,667
Unpaid principal balance with no specific allowance recorded | 377,304 | 813,804 | 509,667
Average recorded investment with no specific allowance recorded | 817,854 | 893,971 | 606,282
Interest income recognized with no specific allowance recorded | 9,563 |  | 4,464
Interest income recognized for cash payments received with no specific allowance recorded | 9,563 |  | 4,464
Impaired Loans/Leases with Specific Allowance Recorded: |  |  |
Recorded investment with specific allowance recorded | 210,438 | 494,229 | 840,783
Unpaid principal balance with specific allowance recorded | 210,438 | 494,229 | 840,783
Related allowance | 143,089 | 265,795 | 467,552
Average recorded investment with specific allowance recorded | 189,539 | 386,009 | 640,557
Interest income recognized with specific allowance recorded | 5,693 | 3,564 |
Interest income recognized for cash payments received with specific allowance recorded | 5,693 | 3,564 |
Total Impaired Loans/Leases: |  |  |
Recorded investment | 587,742 | 1,108,033 | 1,350,450
Unpaid principal balance | 587,742 | 1,308,033 | 1,350,450
Related allowance | 143,089 | 265,795 | 467,552
Average recorded investment | 1,007,393 | 1,279,980 | 1,246,839
Interest income recognized | 15,256 | 3,564 | 4,464
Interest income recognized for cash payments received | $ 15,256 | $ 3,564 | $ 4,464

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