EXHIBIT 99.2

                             JOINT FILING AGREEMENT

                                 May 19, 2020

    Pursuant to and in accordance with the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), and the rules and regulations thereunder, each
party hereto hereby agrees to the joint filing, on behalf of each of them, of
any filing required by such party under Section 13 or Section 16 of the Exchange
Act or any rule or regulation thereunder (including any amendment, restatement,
supplement, and/or exhibit thereto) with the Securities and Exchange Commission
(and, if such security is registered on a national securities exchange, also
with the exchange), and further agrees to the filing, furnishing, and/or
incorporation by reference of this agreement as an exhibit thereto. This
agreement shall remain in full force and effect until revoked by any party
hereto in a signed writing provided to each other party hereto, and then only
with respect to such revoking party.

    IN WITNESS WHEREOF, each party hereto, being duly authorized, has caused
this agreement to be executed and effective as of the date set forth below.

    Date: May 19, 2020                  RYAN L. VARDEMAN

                                        By:    /s/ Ryan L. Vardeman
                                               ---------------------------------

                                        PALOGIC VALUE FUND, L.P.

                                        By:    Palogic Value Management, L.P.
                                        Its:   General Partner

                                        By:    Palogic Capital Management, LLC
                                        Its:   General Partner

                                        By:    /s/ Ryan L. Vardeman
                                               ---------------------------------
                                        Name:  Ryan L. Vardeman
                                        Title: Sole Member

                                        PALOGIC VALUE MANAGEMENT,L.P.

                                        By:    Palogic Capital Management, LLC
                                        Its:   General Partner

                                        By:    /s/ Ryan L. Vardeman
                                               ---------------------------------
                                        Name:  Ryan L. Vardeman
                                        Title: Sole Member

                                        PALOGIC CAPITAL MANAGEMENT,LLC

                                        By:    /s/ Ryan L. Vardeman
                                               ---------------------------------
                                        Name:  Ryan L. Vardeman
                                        Title: Sole Member