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Note 5 - Loans Receivable and Allowance for Loan Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Dec. 31, 2017
Balance | $ 6,485 | $ 5,697 | $ 6,297 | $ 4,675 |  |  |
Charge-offs | (13) | (13) | (13) | (13) |  |  |
Recoveries | 3 |  | 6 | 2,771 |  |  |
Provisions (credits) | 50 | 260 | 235 | (1,489) |  |  |
Balance | 6,525 | 5,944 | 6,525 | 5,944 |  |  |
Total allowance for loan losses | 6,525 | 5,697 | 6,525 | 5,944 | $ 6,525 |  | $ 6,297
Total loans receivable, gross |  |  |  |  | 757,329 |  |
Business Activities Loans [Member] |  |  |  |  |  |  |
Balance |  |  | 6,297 |  |  |  |
Balance | 6,525 |  | 6,525 |  |  |  |
Allowance for loan losses: Individually evaluated for impairment |  |  |  |  | 45 |  | 253
Allowance for loan losses: Collectively evaluated for impairment |  |  |  |  | 6,480 |  | 6,044
Total allowance for loan losses | 6,525 |  | 6,525 |  | 6,525 |  | 6,297
Loans receivable, gross: Individually evaluated for impairment |  |  |  |  | 9,390 |  | 6,753
Loans receivable, gross: Collectively evaluated for impairment |  |  |  |  | 726,031 |  | 712,894
Total loans receivable, gross |  |  |  |  | 735,421 | [1] | 719,647
Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |  |  |
Balance | 2,480 | 2,198 | 2,212 | 1,853 |  |  |
Charge-offs | 0 | 0 | 0 | 0 |  |  |
Recoveries | 3 |  | 6 | 2 |  |  |
Provisions (credits) | (178) | 20 | (87) | 363 |  |  |
Balance | 2,305 | 2,218 | 2,305 | 2,218 |  |  |
Total allowance for loan losses | 2,480 | 2,198 | 2,305 | 2,218 | 2,305 |  | 2,212
Total loans receivable, gross |  |  |  |  | 305,426 |  |
Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] |  |  |  |  |  |  |
Balance |  |  | 2,212 |  |  |  |
Balance | 2,305 |  | 2,305 |  |  |  |
Allowance for loan losses: Individually evaluated for impairment |  |  |  |  | 0 |  | 0
Allowance for loan losses: Collectively evaluated for impairment |  |  |  |  | 2,305 |  | 2,212
Total allowance for loan losses | 2,305 |  | 2,305 |  | 2,305 |  | 2,212
Loans receivable, gross: Individually evaluated for impairment |  |  |  |  | 4,071 |  | 1,977
Loans receivable, gross: Collectively evaluated for impairment |  |  |  |  | 288,437 |  | 297,948
Total loans receivable, gross |  |  |  |  | 292,508 |  | 299,925
Residential Portfolio Segment [Member] |  |  |  |  |  |  |
Balance | 1,073 | 1,073 | 959 | 534 |  |  |
Charge-offs | 0 | 0 | 0 | 0 |  |  |
Recoveries | 0 | 0 | 0 | 0 |  |  |
Provisions (credits) | 23 | (32) | 137 | 507 |  |  |
Balance | 1,096 | 1,041 | 1,096 | 1,041 |  |  |
Total allowance for loan losses | 1,073 | 1,073 | 1,096 | 1,041 | 1,096 |  | 959
Total loans receivable, gross |  |  |  |  | 146,754 |  |
Residential Portfolio Segment [Member] | Business Activities Loans [Member] |  |  |  |  |  |  |
Balance |  |  | 959 |  |  |  |
Balance | 1,096 |  | 1,096 |  |  |  |
Allowance for loan losses: Individually evaluated for impairment |  |  |  |  | 0 |  | 0
Allowance for loan losses: Collectively evaluated for impairment |  |  |  |  | 1,096 |  | 959
Total allowance for loan losses | 1,096 |  | 1,096 |  | 1,096 |  | 959
Loans receivable, gross: Individually evaluated for impairment |  |  |  |  | 3,524 |  | 3,336
Loans receivable, gross: Collectively evaluated for impairment |  |  |  |  | 143,230 |  | 143,041
Total loans receivable, gross |  |  |  |  | 146,754 |  | 146,377
Commercial Portfolio Segment [Member] |  |  |  |  |  |  |
Balance | 1,759 | 1,049 | 2,023 | 740 |  |  |
Charge-offs | 0 | 0 | 0 | 0 |  |  |
Recoveries | 0 |  | 0 | 2,769 |  |  |
Provisions (credits) | 237 | 404 | (27) | (2,056) |  |  |
Balance | 1,996 | 1,453 | 1,996 | 1,453 |  |  |
Total allowance for loan losses | 1,759 | 1,049 | 1,996 | 1,453 | 1,996 |  | 2,023
Total loans receivable, gross |  |  |  |  | 170,676 |  |
Commercial Portfolio Segment [Member] | Business Activities Loans [Member] |  |  |  |  |  |  |
Balance |  |  | 2,023 |  |  |  |
Balance | 1,996 |  | 1,996 |  |  |  |
Allowance for loan losses: Individually evaluated for impairment |  |  |  |  | 45 |  | 251
Allowance for loan losses: Collectively evaluated for impairment |  |  |  |  | 1,951 |  | 1,772
Total allowance for loan losses | 1,996 |  | 1,996 |  | 1,996 |  | 2,023
Loans receivable, gross: Individually evaluated for impairment |  |  |  |  | 1,025 |  | 748
Loans receivable, gross: Collectively evaluated for impairment |  |  |  |  | 161,543 |  | 130,413
Total loans receivable, gross |  |  |  |  | 162,568 |  | 131,161
Consumer Portfolio Segment [Member] |  |  |  |  |  |  |
Balance | 546 | 583 | 568 | 641 |  |  |
Charge-offs | (13) | (13) | (13) | (13) |  |  |
Recoveries | 0 | 0 | 0 | 0 |  |  |
Provisions (credits) | (10) | 23 | (32) | (35) |  |  |
Balance | 523 | 593 | 523 | 593 |  |  |
Total allowance for loan losses | 546 | 583 | 523 | 593 | 523 |  | 568
Total loans receivable, gross |  |  |  |  | 79,264 |  |
Consumer Portfolio Segment [Member] | Business Activities Loans [Member] |  |  |  |  |  |  |
Balance |  |  | 568 |  |  |  |
Balance | 523 |  | 523 |  |  |  |
Allowance for loan losses: Individually evaluated for impairment |  |  |  |  |  |  | 2
Allowance for loan losses: Collectively evaluated for impairment |  |  |  |  | 523 |  | 566
Total allowance for loan losses | 523 |  | 523 |  | 523 |  | 568
Loans receivable, gross: Individually evaluated for impairment |  |  |  |  | 770 |  | 692
Loans receivable, gross: Collectively evaluated for impairment |  |  |  |  | 77,612 |  | 87,015
Total loans receivable, gross |  |  |  |  | 78,382 |  | 87,707
Construction Portfolio Segment [Member] |  |  |  |  |  |  |
Balance | 488 | 591 | 481 | 712 |  |  |
Charge-offs | 0 | 0 | 0 | 0 |  |  |
Recoveries | 0 | 0 | 0 | 0 |  |  |
Provisions (credits) | 11 | (101) | 18 | (222) |  |  |
Balance | 499 | 490 | 499 | 490 |  |  |
Total allowance for loan losses | 488 | 591 | 499 | 490 | 499 |  | 481
Total loans receivable, gross |  |  |  |  | 46,593 |  |
Construction Portfolio Segment [Member] | Business Activities Loans [Member] |  |  |  |  |  |  |
Balance |  |  | 481 |  |  |  |
Balance | 499 |  | 499 |  |  |  |
Allowance for loan losses: Individually evaluated for impairment |  |  |  |  | 0 |  | 0
Allowance for loan losses: Collectively evaluated for impairment |  |  |  |  | 499 |  | 481
Total allowance for loan losses | 499 |  | 499 |  | 499 |  | 481
Loans receivable, gross: Individually evaluated for impairment |  |  |  |  | 0 |  | 0
Loans receivable, gross: Collectively evaluated for impairment |  |  |  |  | 46,593 |  | 47,619
Total loans receivable, gross |  |  |  |  | 46,593 |  | 47,619
Construction to Permanent Portfolio Segment [Member] |  |  |  |  |  |  |
Balance | 61 | 77 | 54 | 69 |  |  |
Charge-offs | 0 | 0 | 0 | 0 |  |  |
Recoveries | 0 | 0 | 0 | 0 |  |  |
Provisions (credits) | 19 | (4) | 26 | 4 |  |  |
Balance | 80 | 73 | 80 | 73 |  |  |
Total allowance for loan losses | 61 | 77 | 80 | 73 | 80 |  | 54
Total loans receivable, gross |  |  |  |  | 8,616 |  |
Construction to Permanent Portfolio Segment [Member] | Business Activities Loans [Member] |  |  |  |  |  |  |
Balance |  |  | 54 |  |  |  |
Balance | 80 |  | 80 |  |  |  |
Allowance for loan losses: Individually evaluated for impairment |  |  |  |  | 0 |  | 0
Allowance for loan losses: Collectively evaluated for impairment |  |  |  |  | 80 |  | 54
Total allowance for loan losses | 80 |  | 80 |  | 80 |  | 54
Loans receivable, gross: Individually evaluated for impairment |  |  |  |  | 0 |  | 0
Loans receivable, gross: Collectively evaluated for impairment |  |  |  |  | 8,616 |  | 6,858
Total loans receivable, gross |  |  |  |  | 8,616 |  | 6,858
Unallocated Financing Receivables [Member] |  |  |  |  |  |  |
Balance | 78 | 126 |  | 126 |  |  |
Charge-offs | 0 | 0 | 0 | 0 |  |  |
Recoveries | 0 | 0 | 0 | 0 |  |  |
Provisions (credits) | (52) | (50) | 26 | (50) |  |  |
Balance | 26 | 76 | 26 | 76 |  |  |
Total allowance for loan losses | 78 | $ 126 | 26 | $ 76 | 26 |  |
Unallocated Financing Receivables [Member] | Business Activities Loans [Member] |  |  |  |  |  |  |
Balance |  |  | 0 |  |  |  |
Balance | 26 |  | 26 |  |  |  |
Allowance for loan losses: Individually evaluated for impairment |  |  |  |  | 0 |  | 0
Allowance for loan losses: Collectively evaluated for impairment |  |  |  |  | 26 |  | 0
Total allowance for loan losses | $ 26 |  | $ 26 |  | 26 |  | 0
Loans receivable, gross: Individually evaluated for impairment |  |  |  |  | 0 |  | 0
Loans receivable, gross: Collectively evaluated for impairment |  |  |  |  | 0 |  | 0
Total loans receivable, gross |  |  |  |  | $ 0 |  | $ 0
[1] | The total loan receivable, gross does not include $21.9 million acquired loans which were all individually evaluated for impairment.

X
- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for 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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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