Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Operating activities
Net income	$ 4,192us-gaap_NetIncomeLoss	$ 3,337us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes, net	648us-gaap_DeferredIncomeTaxExpenseBenefit	(71)us-gaap_DeferredIncomeTaxExpenseBenefit
Provision for loan and lease losses	684us-gaap_ProvisionForLoanAndLeaseLosses	180us-gaap_ProvisionForLoanAndLeaseLosses
Depreciation, amortization and accretion, net	(660)	433
Share-based compensation	234us-gaap_ShareBasedCompensation	193us-gaap_ShareBasedCompensation
Increase in cash surrender value of bank-owned life insurance	(234)us-gaap_BankOwnedLifeInsuranceIncome	(206)us-gaap_BankOwnedLifeInsuranceIncome
Origination of loans for sale	15,499	0
Sale of loans originated for sale	15,096	0
Gain on sale of loans originated for sale	653us-gaap_GainLossOnSaleOfMortgageLoans	0us-gaap_GainLossOnSaleOfMortgageLoans
Net gain on foreclosed properties, including impairment valuation	(16)	0
Excess tax benefit from share-based compensation	(74)	(12)
Increase in accrued interest receivable and other assets	(394)	(262)
Decrease in accrued interest payable and other liabilities	(562)	(636)
Net cash (used) provided by operating activities	2,762	2,956
Investing activities
Proceeds from maturities, redemptions and paydowns of available-for-sale securities	10,845	13,300
Proceeds from maturities of held-to-maturity securities	984	0
Purchases of available-for-sale securities	(8,636)	(18,706)
Proceeds from sale of foreclosed properties	143	0
Net increase in loans and leases	(14,413)	(4,348)
Distributions from limited partnerships	332	0
Investment in FHLB and FRB Stock	(458)	(124)
Proceeds from sale of FHLB Stock	0	124
Purchases of leasehold improvements and equipment, net	(119)	(113)
Net cash used in investing activities	(11,322)	(9,867)
Financing activities
Net increase in deposits	47,704us-gaap_IncreaseDecreaseInDeposits	6,845us-gaap_IncreaseDecreaseInDeposits
Net increase in short-term borrowed funds	500	0
Repayment of subordinated notes payable	0	(4,000)
Excess tax benefit from share-based compensation	74	12
Cash dividends paid	(954)us-gaap_PaymentsOfDividendsCommonStock	(828)us-gaap_PaymentsOfDividendsCommonStock
Exercise of stock options	300	0
Purchase of treasury stock	(414)	(8)
Net cash provided by financing activities	47,210	2,021
Net increase (decrease) in cash and cash equivalents	38,650	(4,890)
Cash and cash equivalents at the beginning of the period	103,237	81,286
Cash and cash equivalents at the end of the period	141,887	76,396
Supplementary cash flow information
Interest paid on deposits and borrowings	3,117us-gaap_InterestPaid	2,102us-gaap_InterestPaid
Income taxes paid	$ 525us-gaap_IncomeTaxesPaid	$ 628us-gaap_IncomeTaxesPaid

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- Definition

Cash inflow received as distributions, returns of capital, or sale proceeds from partnership interests held for investment purposes.

+ References

No definition available.

+ Details

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- Definition

The cash inflow associated with maturities (principal being due), prepayments and calls (requests of early payments) on securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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- Definition

The cash inflow associated with the maturity, prepayments and calls (requests for early payments) of debt securities designated as held-to-maturity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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- Definition

The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

+ References

+ Details

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Period Type:	duration

- Definition

Amount of cash inflow from sale of Federal Home Loan Bank (FHLB) stock.

+ References

No definition available.

+ Details

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- Definition

The cash inflow from the sale assets received in full or partial satisfaction of a receivable including real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts. Foreclosed assets also include loans that are treated as if the underlying collateral had been foreclosed because the institution has taken possession of the collateral, even though legal foreclosure or repossession proceedings have not taken place.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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- Definition

The cash inflow resulting from the sale of loans classified as held-for-sale, including proceeds from loans sold through mortgage securitization.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 21

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3461-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 230

-Section 55

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=34726456&loc=d3e60097-112785

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 16

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3337-108585

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (j)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

+ References

+ Details

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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