Note 4 - Loans (Details) - Allowance for Loan Losses - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	$ 24,491	$ 21,140	$ 23,221	$ 20,848
Chargeoffs	26	155	125	797
Recoveries	6	3	22	14
Provision for loan losses	1,049	1,221	2,402	2,144
Allowance for loan losses, ending balance	25,520	22,209	25,520	22,209
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	986	761	838	808
Chargeoffs		96		96
Recoveries			6
Provision for loan losses	(81)	172	61	125
Allowance for loan losses, ending balance	905	837	905	837
Commercial Real Estate Portfolio Segment [Member] \| Multifamily Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	7,030	6,920	7,207	7,348
Chargeoffs	21		88
Provision for loan losses	(194)	23	(304)	(405)
Allowance for loan losses, ending balance	6,815	6,943	6,815	6,943
Commercial Real Estate Portfolio Segment [Member] \| Other Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	2,263	1,802	2,340	1,501
Recoveries	1		2
Provision for loan losses	599	271	521	572
Allowance for loan losses, ending balance	2,863	2,073	2,863	2,073
Commercial Real Estate Portfolio Segment [Member] \| Owner-occupied Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	1,007	1,148	1,023	1,191
Chargeoffs				400
Provision for loan losses	(58)	(134)	(74)	223
Allowance for loan losses, ending balance	949	1,014	949	1,014
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	12,114	9,180	10,599	8,607
Chargeoffs				121
Recoveries			9	2
Provision for loan losses	813	860	2,319	1,552
Allowance for loan losses, ending balance	12,927	10,040	12,927	10,040
Residential Portfolio Segment [Member] \| Revolving Home Equity Line [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	1,021	1,207	1,121	1,240
Chargeoffs		59		173
Recoveries	5	3	5	3
Provision for loan losses	(58)	36	(158)	117
Allowance for loan losses, ending balance	968	1,187	968	1,187
Consumer and Other Porfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	70	122	93	153
Chargeoffs	5		37	7
Recoveries				9
Provision for loan losses	28	(7)	37	(40)
Allowance for loan losses, ending balance	$ 93	$ 115	$ 93	$ 115

A valuation allowance for financing receivables that are expected to be uncollectible.

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- Definition

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+ References

No definition available.

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of direct write-downs of financing receivables charged against the allowance.

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.11)

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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