Amounts contributed to Employee Stock Purchase Plans during the period.

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Employee stock purchase plan percentage of market value.

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- Definition

Number of substantially equal installments in which share-based payments will vest.

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Paragraph 2
-Subparagraph (i)
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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ References

No definition available.

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

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No definition available.

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Number of additional shares authorized for issuance under an established share-based compensation plan.

+ References

No definition available.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Gross number of share options (or share units) granted during the period.

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No definition available.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Note 10 - Stock-Based Compensation (Details Textual)	1 Months Ended			3 Months Ended
Note 10 - Stock-Based Compensation (Details Textual)	Mar. 31, 2016 USD ($) shares	Feb. 29, 2016 shares	May. 31, 2011 USD ($) shares	Mar. 31, 2016 USD ($) shares	Mar. 31, 2015 USD ($) shares	Dec. 31, 2015 shares	Dec. 31, 2014 shares
Virginia Heritage Bank [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	0			0
Stock Plan 2006 [Member] \| Restricted Stock and PRSU [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition				2 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	312,871			312,871
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options \| $	$ 10,100,000			$ 10,100,000
Stock Plan 2006 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	1,996,500			1,996,500
The Fidelity Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	0			0
The 2011 ESPP [Member] \| Minimum [Member] \| Pay Period [Member]
Amount Contributed to ESPP \| $			$ 10
The 2011 ESPP [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period			1 year
The 2011 ESPP [Member] \| Minimum Months Per Year [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period			150 days
The 2011 ESPP [Member] \| Maximum [Member] \| Offering Period [Member]
Amount Contributed to ESPP \| $			$ 6,250
The 2011 ESPP [Member] \| Maximum [Member] \| Annually [Member]
Amount Contributed to ESPP \| $			$ 25,000
The 2011 ESPP [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate			10.00%
The 2011 ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	429,837			429,837
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized			550,000
Employee Stock Purchase Plan Percentage Of Market Value			85.00%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	24,410	80,365		139,732	78,070
Share-based Compensation Arrangement by Share-based Payment Award Number of Vesting Periods	3	3		3
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	312,871			312,871	393,729	369,093	509,336
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		34,957
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		0 years
Salaries and Employee Benefits [Member]
Allocated Share-based Compensation Expense \| $				$ 1,400,000	$ 1,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value \| $	$ 10,500,000			$ 10,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value \| $				$ 604,000	$ 6,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value \| $				40,000	$ 79,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options \| $	$ 121,000			$ 121,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition				3 years 36 days