EXHIBIT 1


          JOINT FILING AGREEMENT AMONG FENIMORE ASSET MANAGEMENT, INC.
                              AND THOMAS O. PUTNAM

         WHEREAS, in accordance with Rule 13d-1(f) under the Securities and
Exchange Act of 1934 (the "Act"), only one joint Statement and any amendments
thereto need to be filed whenever one or more persons are required to file such
a statement or any amendments thereto pursuant to Section 13(d) of the Act with
respect to the same securities, provided that said persons agree in writing that
such Statement or amendments thereto is filed on behalf of each of them;

         NOW, THEREFORE, the parties hereto agree as follows:

         FENIMORE ASSET MANAGEMENT, INC. AND THOMAS O. PUTNAM hereby agree, in
accordance with Rule 13d-1(f) under the Act, to file a statement on Schedule 13G
relating to their ownership of the Common Stock of the Issuer and do hereby
further agree that said statement shall be filed on behalf of each of them.

                                        FENIMORE ASSET MANAGEMENT, INC.


Dated:  February 7, 2001                By:     /s/ Herbert L. Schultz, Jr.
                                                ---------------------------
                                        Name:    Herbert L. Schultz, Jr.
                                        Title:   President

Dated:  February 7, 2001                By:     /s/ Thomas O. Putnam
                                                --------------------
                                                 Thomas O. Putnam