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Note 3 - Loans Leases Receivable - Leases By Delinquency Status (Details) - USD ($) | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Loans |  | $ 3,046,799,276 |  | $ 2,956,713,493
Commercial Portfolio Segment [Member] |  |  |  |
Loans | [1] | 1,201,085,625 |  | 1,134,516,315
Finance Leases Portfolio Segment [Member] |  |  |  |
Loans | [1],[2] | 137,614,465 |  | 141,448,232
Residential Portfolio Segment [Member] |  |  |  |
Loans | [3] | 254,484,231 | [2] | 258,646,265
Consumer Portfolio Segment [Member] |  |  |  |
Loans | [2] | 95,911,569 |  | 118,610,799
Commercial, Lease, Residential, and Consumer Portfolio Segments [Member] |  |  |  |
Loans | [2] | $ 566,922,056 |  | $ 585,463,694
As a % of Total | [2] | 100.00% |  | 100.00%
Performing Financial Instruments [Member] | Commercial Portfolio Segment [Member] |  |  |  |
Loans | [2] | $ 77,987,539 |  | $ 65,847,177
Performing Financial Instruments [Member] | Finance Leases Portfolio Segment [Member] |  |  |  |
Loans | [2] | 134,638,869 |  | 137,778,740
Performing Financial Instruments [Member] | Residential Portfolio Segment [Member] |  |  |  |
Loans | [2] | 253,025,270 |  | 256,935,448
Performing Financial Instruments [Member] | Consumer Portfolio Segment [Member] |  |  |  |
Loans | [2] | 95,626,776 |  | 118,333,529
Performing Financial Instruments [Member] | Commercial, Lease, Residential, and Consumer Portfolio Segments [Member] |  |  |  |
Loans | [2] | $ 561,278,454 |  | $ 578,894,894
As a % of Total | [2] | 99.00% |  | 98.88%
Nonperforming Financial Instruments [Member] |  |  |  |
Loans |  | $ 18,075,417 |  | $ 18,642,377
Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member] |  |  |  |
Loans |  | 6,199,154 |  | 6,455,535
Nonperforming Financial Instruments [Member] | Finance Leases Portfolio Segment [Member] |  |  |  |
Loans | [2] | 2,975,596 |  | 3,669,492
Nonperforming Financial Instruments [Member] | Residential Portfolio Segment [Member] |  |  |  |
Loans | [2] | 1,458,961 |  | 1,710,818
Nonperforming Financial Instruments [Member] | Consumer Portfolio Segment [Member] |  |  |  |
Loans | [2] | 284,793 |  | 277,270
Nonperforming Financial Instruments [Member] | Commercial, Lease, Residential, and Consumer Portfolio Segments [Member] |  |  |  |
Loans | [2] | $ 5,643,602 |  | $ 6,568,800
As a % of Total | [2] | 1.00% |  | 1.12%
[1] | Includes equipment financing agreements outstanding at m2, totaling $78,911,791 and $66,758,397 as of March 31, 2018 and December 31, 2017, respectively.
[2] | Performing = loans/leases accruing and less than 90 days past due. Nonperforming = loans/leases on nonaccrual, accruing loans/leases that are greater than or equal to 90 days past due, and accruing TDRs.
[3] | Includes residential real estate loans held for sale totaling $279,750 and $645,001 as of March 31, 2018, and December 31, 2017, respectively.

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
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