Equity	12 Months Ended
Dec. 31, 2014
Equity [Abstract]
Equity	EQUITY Common Stock Repurchase Programs From time to time, the board of directors of the Corporation approves common stock repurchase programs allowing management to repurchase shares of the Corporation's common stock in the open market. The repurchased shares are available for later reissuance in connection with potential future stock dividends, the Corporation's dividend reinvestment plan, employee benefit plans and other general corporate purposes. Under these programs, the timing and actual number of shares subject to repurchase are at the discretion of management and are contingent on a number of factors, including the projected parent company cash flow requirements and the Corporation's market price per share. In January 2008, the board of directors of the Corporation authorized the repurchase of up to 500,000 shares of the Corporation's common stock under a stock repurchase program. In November 2011, the board of directors of the Corporation reaffirmed the stock buy-back authorization with the qualification that the shares may only be repurchased if the share price is below the tangible book value per share of the Corporation's common stock at the time of the repurchase. Since the January 2008 authorization, no shares have been repurchased. At December 31, 2014, there were 500,000 remaining shares available for repurchase under the Corporation's stock repurchase programs. Underwritten Public Offerings of Common Stock On June 24, 2014, the Corporation issued and sold 2,500,000 shares of common stock at a public offering price of $28.00 per share. An additional 375,000 shares were issued and sold on June 30, 2014 upon the exercise in full of the underwriters' over-allotment option. The net proceeds from the issuance and sale of the common stock of this $80.5 million offering, after deducting the underwriting discount and issuance-related expenses, totaled $76.2 million. On September 18, 2013, the Corporation issued and sold 2,213,750 shares of common stock, including 288,750 shares of common stock that were issued and sold upon the exercise in full of the underwriters' over-allotment option, at a public offering price of $26.00 per share. The net proceeds from the issuance and sale of the common stock of this $57.6 million offering, after deducting the underwriting discount and issuance-related expenses, totaled $53.9 million. Shelf Registration On June 12, 2014, the Corporation filed an automatic shelf registration statement on Form S-3 with the Securities and Exchange Commission (SEC) for an indeterminate amount of securities, which became immediately effective. The shelf registration statement provides the Corporation with the ability to raise capital, subject to SEC rules and limitations, if the board of directors of the Corporation decides to do so. As previously discussed, the Corporation completed an $80.5 million public stock offering during the second quarter of 2014, which does not take into account the underwriting discount and issuance related expenses. The Corporation had previously filed a universal shelf registration statement with the SEC on May 23, 2013, which became effective on June 7, 2013, to register up to $100 million in securities. The Corporation's September 2013 common stock offering was completed under this universal shelf registration statement. Prior to filing its automatic shelf registration statement on June 12, 2014, the Corporation filed a post-effective amendment to terminate the effectiveness of the universal shelf registration statement and remove from registration all of the remaining securities covered by the universal shelf registration statement. Preferred Stock On April 20, 2009, the shareholders of the Corporation authorized the board of directors of the Corporation to issue up to 200,000 shares of preferred stock in connection with either an acquisition by the Corporation of an entity that has shares of preferred stock issued and outstanding pursuant to any program established by the United States government or participation by the Corporation in any program established by the United States government. As of December 31, 2014, no shares of preferred stock were issued and outstanding.

Equity

12 Months Ended

Dec. 31, 2014

EQUITY

Common Stock Repurchase Programs

From time to time, the board of directors of the Corporation approves common stock repurchase programs allowing management to repurchase shares of the Corporation's common stock in the open market. The repurchased shares are available for later reissuance in connection with potential future stock dividends, the Corporation's dividend reinvestment plan, employee benefit plans and other general corporate purposes. Under these programs, the timing and actual number of shares subject to repurchase are at the discretion of management and are contingent on a number of factors, including the projected parent company cash flow requirements and the Corporation's market price per share.

In January 2008, the board of directors of the Corporation authorized the repurchase of up to 500,000 shares of the Corporation's common stock under a stock repurchase program. In November 2011, the board of directors of the Corporation reaffirmed the stock buy-back authorization with the qualification that the shares may only be repurchased if the share price is below the tangible book value per share of the Corporation's common stock at the time of the repurchase. Since the January 2008 authorization, no shares have been repurchased. At December 31, 2014, there were 500,000 remaining shares available for repurchase under the Corporation's stock repurchase programs.

Underwritten Public Offerings of Common Stock

On June 24, 2014, the Corporation issued and sold 2,500,000 shares of common stock at a public offering price of $28.00 per share. An additional 375,000 shares were issued and sold on June 30, 2014 upon the exercise in full of the underwriters' over-allotment option. The net proceeds from the issuance and sale of the common stock of this $80.5 million offering, after deducting the underwriting discount and issuance-related expenses, totaled $76.2 million.

On September 18, 2013, the Corporation issued and sold 2,213,750 shares of common stock, including 288,750 shares of common stock that were issued and sold upon the exercise in full of the underwriters' over-allotment option, at a public offering price of $26.00 per share. The net proceeds from the issuance and sale of the common stock of this $57.6 million offering, after deducting the underwriting discount and issuance-related expenses, totaled $53.9 million.

Shelf Registration

On June 12, 2014, the Corporation filed an automatic shelf registration statement on Form S-3 with the Securities and Exchange Commission (SEC) for an indeterminate amount of securities, which became immediately effective. The shelf registration statement provides the Corporation with the ability to raise capital, subject to SEC rules and limitations, if the board of directors of the Corporation decides to do so. As previously discussed, the Corporation completed an $80.5 million public stock offering during the second quarter of 2014, which does not take into account the underwriting discount and issuance related expenses.

The Corporation had previously filed a universal shelf registration statement with the SEC on May 23, 2013, which became effective on June 7, 2013, to register up to $100 million in securities. The Corporation's September 2013 common stock offering was completed under this universal shelf registration statement. Prior to filing its automatic shelf registration statement on June 12, 2014, the Corporation filed a post-effective amendment to terminate the effectiveness of the universal shelf registration statement and remove from registration all of the remaining securities covered by the universal shelf registration statement.

Preferred Stock

On April 20, 2009, the shareholders of the Corporation authorized the board of directors of the Corporation to issue up to 200,000 shares of preferred stock in connection with either an acquisition by the Corporation of an entity that has shares of preferred stock issued and outstanding pursuant to any program established by the United States government or participation by the Corporation in any program established by the United States government. As of December 31, 2014, no shares of preferred stock were issued and outstanding.