CUSIP No. 680194107 Page 20 of 21 Pages

EXHIBIT 1

JOINT FILING AGREEMENT

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that the Schedule 13D to which this Joint Filing Agreement is being filed as an exhibit shall be a joint statement filed on behalf of each of the undersigned. The undersigned further agree that each party hereto is responsible for the timely filing of such Statement on Schedule 13D and any amendments thereto, and for the accuracy and completeness of the information concerning such party contained therein; provided, however, that no party is responsible for the accuracy or completeness of the information concerning any other party, unless such party knows or has reason to believe that such information is inaccurate.

Date: January 2, 2014

FINANCIAL EDGE FUND, L.P.

By:           PL CAPITAL, LLC

General Partner

By:           /s/ John W. Palmer                                           /s/ Richard J. Lashley

John W. Palmer                                                      Richard J. Lashley

Managing Member                                           Managing Member

FINANCIAL EDGE-STRATEGIC FUND, L.P.

By:           PL CAPITAL, LLC

General Partner

By:           /s/ John W. Palmer                                           /s/ Richard J. Lashley

John W. Palmer                                                      Richard J. Lashley

Managing Member                                           Managing Member

PL CAPITAL/FOCUSED FUND, L.P.

By:           PL CAPITAL, LLC

General Partner

By:           /s/ John W. Palmer                                           /s/ Richard J. Lashley

John W. Palmer                                                      Richard J. Lashley

Managing Member                                           Managing Member

CUSIP No. 680194107 Page 21 of 21 Pages

GOODBODY/PL CAPITAL, L.P.

By:           GOODBODY/PL CAPITAL, LLC

General Partner

By:          /s/ John W. Palmer                                           /s/ Richard J. Lashley

John W. Palmer                                                 Richard J. Lashley

Managing Member                                           Managing Member

GOODBODY/PL CAPITAL, LLC

By:          /s/ John W. Palmer                                           /s/ Richard J. Lashley

John W. Palmer                                                 Richard J. Lashley

Managing Member                                           Managing Member

PL CAPITAL ADVISORS, LLC

By:          /s/ John W. Palmer                                           /s/ Richard J. Lashley

John W. Palmer                                                 Richard J. Lashley

Managing Member                                           Managing Member

PL CAPITAL, LLC

By:          /s/ John W. Palmer                                           /s/ Richard J. Lashley

John W. Palmer                                                 Richard J. Lashley

Managing Member                                           Managing Member

By:         /w/ John W. Palmer

               John W. Palmer

By:         /s/ Richard J. Lashley

               Richard J. Lashley