Note 27: Condensed Parent Company Statements: Condensed Income Statement -- Great Southern Bancorp, Inc. (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest Expense	$ 37,757	$ 27,905	$ 22,119
Parent Company
Dividends from subsidiary bank	34,000	17,500	12,000
Other Interest and Dividend Income	0	48	0
Gain on Redemption of Trust Preferred Securities	0	0	2,735
Other income (loss)	0	0	2
Total income	34,000	17,548	14,737
Operating Expenses	1,793	1,330	1,322
Interest Expense	5,050	5,047	2,381
Total expense	6,843	6,377	3,703
Income before income tax and equity in undistributed earnings of subsidiaries	27,157	11,171	11,034
Income Tax Credits and Adjustments	(1,204)	(1,709)	(241)
Income before equity in earnings of subsidiaries	28,361	12,880	11,275
Equity in undistributed earnings of subsidiaries	38,748	38,684	34,067
Net income parent company	$ 67,109	$ 51,564	$ 45,342