Note 27: Condensed Parent Company Statements: Condensed Balance Sheet -- Great Southern Bancorp, Inc. (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Cash	$ 110,108	$ 115,600
Prepaid expenses and other assets	55,336	47,122
Total assets	4,676,200	4,414,521
Subordinated notes	73,842	73,688
Subordinated Debt	75,000	75,000
Additional paid-in capital	30,121	28,203
Retained earnings	492,087	442,077
Parent Company
Cash	56,648	41,977
Investment in subsidiary bank	580,016	533,153
Deferred income taxes	411	133
Prepaid expenses and other assets	889	903
Total assets	637,964	576,166
Accounts Payable and Accrued Liabilities, Fair Value Disclosure	6,371	5,042
Subordinated notes	25,774	25,774
Subordinated Debt	73,842	73,688
Common Stock Value Parent	142	141
Additional paid-in capital	30,121	28,203
Retained earnings	492,087	442,077
Unrealized gain on available-for-sale securities, parent net	9,627	1,241
Total Assets and Liabilities	$ 637,964	$ 576,166