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Note 4 - Loans Leases Receivable - Leases By Delinquency Status (Details) - USD ($) | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Loans and leases |  | $ 3,723,630,222 | $ 2,956,713,493
Delinquency Status [Member] |  |  |
Loans and leases | [1] | 103,403,103 | 66,758,397
Nonperforming Financial Instruments [Member] |  |  |
Loans and leases |  | 18,550,421 | 18,642,377
Commercial Portfolio Segment [Member] |  |  |
Loans and leases |  | 1,429,409,587 | 1,134,516,315
Commercial Portfolio Segment [Member] | Performing Less Than Ninety Days Past Due [Member} |  |  |
Loans and leases | [1] | 102,712,527 | 65,847,177
Commercial Portfolio Segment [Member] | Non Performing Greater Than Ninety Days Past Due [Member] |  |  |
Loans and leases | [1] | 690,576 | 911,220
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |  |  |
Loans and leases |  | 4,931,236 | 6,455,535
Finance Leases Portfolio Segment [Member] |  |  |
Loans and leases |  | 117,968,682 | 141,448,232
Finance Leases Portfolio Segment [Member] | Delinquency Status [Member] |  |  |
Loans and leases | [1] | 117,968,682 | 141,448,232
Finance Leases Portfolio Segment [Member] | Performing Less Than Ninety Days Past Due [Member} |  |  |
Loans and leases | [1] | 116,096,237 | 137,778,740
Finance Leases Portfolio Segment [Member] | Non Performing Greater Than Ninety Days Past Due [Member] |  |  |
Loans and leases | [1] | 1,872,445 | 3,669,492
Finance Leases Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |  |  |
Loans and leases |  | 1,872,445 | 3,669,492
Residential Portfolio Segment [Member] |  |  |
Loans and leases | [2] | 290,759,398 | 258,646,265
Residential Portfolio Segment [Member] | Delinquency Status [Member] |  |  |
Loans and leases | [1] | 290,759,398 | 258,646,265
Residential Portfolio Segment [Member] | Performing Less Than Ninety Days Past Due [Member} |  |  |
Loans and leases | [1] | 288,827,527 | 256,935,447
Residential Portfolio Segment [Member] | Non Performing Greater Than Ninety Days Past Due [Member] |  |  |
Loans and leases | [1] | 1,931,871 | 1,710,818
Residential Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |  |  |
Loans and leases |  | 1,931,872 | 1,710,818
Consumer Portfolio Segment [Member] |  |  |
Loans and leases |  | 119,381,780 | 118,610,799
Consumer Portfolio Segment [Member] | Delinquency Status [Member] |  |  |
Loans and leases | [1] | 119,381,780 | 118,610,799
Consumer Portfolio Segment [Member] | Performing Less Than Ninety Days Past Due [Member} |  |  |
Loans and leases | [1] | 118,714,491 | 118,333,529
Consumer Portfolio Segment [Member] | Non Performing Greater Than Ninety Days Past Due [Member] |  |  |
Loans and leases | [1] | 667,289 | 277,270
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |  |  |
Loans and leases |  | 667,289 | 277,270
Lease Residential and Consumer Portfolio Segments [Member] | Delinquency Status [Member] |  |  |
Loans and leases | [1] | $ 631,512,963 | $ 585,463,693
As a % of Total | [1] | 100.00% | 100.00%
Lease Residential and Consumer Portfolio Segments [Member] | Performing Less Than Ninety Days Past Due [Member} |  |  |
Loans and leases | [1] | $ 626,350,782 | $ 578,894,893
As a % of Total | [1] | 99.18% | 98.88%
Lease Residential and Consumer Portfolio Segments [Member] | Non Performing Greater Than Ninety Days Past Due [Member] |  |  |
Loans and leases | [1] | $ 5,162,181 | $ 6,568,800
As a % of Total | [1] | 0.82% | 1.12%
[1] | 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 troubled debt restructurings.
[2] | Includes residential real estate loans held for sale totaling $1.3 million and $645 thousand as of December 31, 2018 and 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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