Note 4: Acquired Loans, Loss Sharing Agreements and FDIC Indemnification Assets: Business Combinations Policy (Policies)	12 Months Ended
Dec. 31, 2018
TeamBank
Business Combinations Policy	TeamBank On March 20, 2009, Great Southern Bank entered into a purchase and assumption agreement with loss share with the Federal Deposit Insurance Corporation (FDIC) to assume all of the deposits (excluding brokered deposits) and acquire certain assets of TeamBank, N.A., a full service commercial bank headquartered in Paola, Kansas. The loans, commitments and foreclosed assets purchased in the TeamBank transaction were covered by a loss sharing agreement between the FDIC and Great Southern Bank. This agreement originally was to extend for ten years for 1-4 family real estate loans and for five years for other loans. The five-year period ended March 31, 2014 and the ten-year period was terminated early, effective April 26, 2016, by mutual agreement of Great Southern Bank and the FDIC. See “Loss Sharing Agreements” below. Based upon the acquisition date fair values of the net assets acquired, no goodwill was recorded.
Sun Security Bank
Business Combinations Policy	Sun Security Bank On October 7, 2011, Great Southern Bank entered into a purchase and assumption agreement with loss share with the FDIC to assume all of the deposits and acquire certain assets of Sun Security Bank, a full service bank headquartered in Ellington, Missouri. The loans and foreclosed assets purchased in the Sun Security Bank transaction were covered by a loss sharing agreement between the FDIC and Great Southern Bank. This agreement originally was to extend for ten years for 1-4 family real estate loans and for five years for other loans but was terminated early, effective April 26, 2016, by mutual agreement of Great Southern Bank and the FDIC. See “Loss Sharing Agreements” below. Based upon the acquisition date fair values of the net assets acquired, no goodwill was recorded.
InterBank
Business Combinations Policy	InterBank On April 27, 2012, Great Southern Bank entered into a purchase and assumption agreement with loss share with the FDIC to assume all of the deposits and acquire certain assets of Inter Savings Bank, FSB (“InterBank”), a full service bank headquartered in Maple Grove, Minnesota. The loans and foreclosed assets purchased in the InterBank transaction were covered by a loss sharing agreement between the FDIC and Great Southern Bank. This agreement originally was to extend for ten years for 1-4 family real estate loans and for five years for other loans but was terminated early, effective June 9, 2017, by mutual agreement of Great Southern Bank and the FDIC. See “Loss Sharing Agreements” below. Based upon the acquisition date fair values of the net assets acquired, no goodwill was recorded. A premium was recorded in conjunction with the fair value of the acquired loans and the amount amortized to yield during 2018, 2017 and 2016 was $175,000, $269,000 and $359,000, respectively.
Valley Bank
Business Combinations Policy	Valley Bank On June 20, 2014, Great Southern Bank entered into a purchase and assumption agreement with the FDIC to purchase a substantial portion of the loans and investment securities, as well as certain other assets, and assume all of the deposits, as well as certain other liabilities, of Valley Bank, a full-service bank headquartered in Moline, Illinois, with significant operations in Iowa. This transaction did not include a loss sharing agreement. Based upon the acquisition date fair values of the net assets acquired, no goodwill was recorded. A premium was recorded in conjunction with the fair value of the acquired loans and the amount amortized to yield during 2018, 2017 and 2016 was $11,000, $217,000 and $491,000, respectively.

Note 4: Acquired Loans, Loss Sharing Agreements and FDIC Indemnification Assets: Business Combinations Policy (Policies)

12 Months Ended

Dec. 31, 2018

Business Combinations Policy

TeamBank

On March 20, 2009, Great Southern Bank entered into a purchase and assumption agreement with loss share with the Federal Deposit Insurance Corporation (FDIC) to assume all of the deposits (excluding brokered deposits) and acquire certain assets of TeamBank, N.A., a full service commercial bank headquartered in Paola, Kansas.

The loans, commitments and foreclosed assets purchased in the TeamBank transaction were covered by a loss sharing agreement between the FDIC and Great Southern Bank. This agreement originally was to extend for ten years for 1-4 family real estate loans and for five years for other loans. The five-year period ended March 31, 2014 and the ten-year period was terminated early, effective April 26, 2016, by mutual agreement of Great Southern Bank and the FDIC. See “Loss Sharing Agreements” below. Based upon the acquisition date fair values of the net assets acquired, no goodwill was recorded.

Sun Security Bank

Business Combinations Policy

Sun Security Bank

On October 7, 2011, Great Southern Bank entered into a purchase and assumption agreement with loss share with the FDIC to assume all of the deposits and acquire certain assets of Sun Security Bank, a full service bank headquartered in Ellington, Missouri.

The loans and foreclosed assets purchased in the Sun Security Bank transaction were covered by a loss sharing agreement between the FDIC and Great Southern Bank. This agreement originally was to extend for ten years for 1-4 family real estate loans and for five years for other loans but was terminated early, effective April 26, 2016, by mutual agreement of Great Southern Bank and the FDIC. See “Loss Sharing Agreements” below. Based upon the acquisition date fair values of the net assets acquired, no goodwill was recorded.

InterBank

Business Combinations Policy

InterBank

On April 27, 2012, Great Southern Bank entered into a purchase and assumption agreement with loss share with the FDIC to assume all of the deposits and acquire certain assets of Inter Savings Bank, FSB (“InterBank”), a full service bank headquartered in Maple Grove, Minnesota.

The loans and foreclosed assets purchased in the InterBank transaction were covered by a loss sharing agreement between the FDIC and Great Southern Bank. This agreement originally was to extend for ten years for 1-4 family real estate loans and for five years for other loans but was terminated early, effective June 9, 2017, by mutual agreement of Great Southern Bank and the FDIC. See “Loss Sharing Agreements” below. Based upon the acquisition date fair values of the net assets acquired, no goodwill was recorded. A premium was recorded in conjunction with the fair value of the acquired loans and the amount amortized to yield during 2018, 2017 and 2016 was $175,000, $269,000 and $359,000, respectively.

Valley Bank

Business Combinations Policy

Valley Bank

On June 20, 2014, Great Southern Bank entered into a purchase and assumption agreement with the FDIC to purchase a substantial portion of the loans and investment securities, as well as certain other assets, and assume all of the deposits, as well as certain other liabilities, of Valley Bank, a full-service bank headquartered in Moline, Illinois, with significant operations in Iowa. This transaction did not include a loss sharing agreement.

Based upon the acquisition date fair values of the net assets acquired, no goodwill was recorded. A premium was recorded in conjunction with the fair value of the acquired loans and the amount amortized to yield during 2018, 2017 and 2016 was $11,000, $217,000 and $491,000, respectively.