Number of Institutional Investors that Purchased Warrant

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(4))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(2))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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

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Percentage of vesting of share-based compensation awards.

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Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	3 Months Ended		12 Months Ended
	Nov. 30, 2011 investor	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 05, 2008
Class of Stock [Line Items]
Number of institutional investors that purchased warrant	2
Cash dividends to common stockholders		$ 1,307us-gaap_DividendsCommonStockCash	$ 1,120us-gaap_DividendsCommonStockCash	$ 4,733us-gaap_DividendsCommonStockCash
Cash dividends paid per common share		$ 0.22	$ 0.19
Performance Shares [Member]
Class of Stock [Line Items]
Vesting period of performance-based stock awards		3 years
Performance Shares [Member] \| Minimum [Member]
Class of Stock [Line Items]
Vesting percentage of performance-based awards		0.00%
Performance Shares [Member] \| Maximum [Member]
Class of Stock [Line Items]
Vesting percentage of performance-based awards		200.00%
Common stock
Class of Stock [Line Items]
Number of common stock shares authorized to be purchased by warrant		157,198
Exercise price of warrant to purchase common stock (usd per share)		$ 26.72
U.S. Treasury Capital Purchase Program (TCPP) \| Common stock
Class of Stock [Line Items]
Number of common stock shares authorized to be purchased by warrant					154,242
Exercise price of warrant to purchase common stock (usd per share)					$ 27.23