Note 27: Condensed Parent Company Statements: Condensed Income Statement -- Great Southern Bancorp, Inc. (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Gain on Redemption of Trust Preferred Securities	$ (1,115)
Total Interest Expense	15,997	$ 15,801	$ 19,203
Statements of Income | Parent Company
Income before income tax and equity in undistributed earnings of subsidiaries	26,561	34,237	22,341
Income Tax Credits and Adjustments	(91)	(388)	(365)
Income before equity in earnings of subsidiaries	26,652	34,625	22,706
Equity in undistributed earnings of subsidiaries	19,850	8,904	11,023
Net income parent company	46,502	43,529	33,729
Statements of Income | Parent Company | Income
Dividends from subsidiary bank	27,000	36,000	24,000
Other Interest and Dividend Income	5	22	20
Gain on Redemption of Trust Preferred Securities	1,416
Other income (loss)	(7)	(20)	13
Total income	28,414	36,002	24,033
Statements of Income | Parent Company | Expense
Operating Expenses	1,139	1,198	1,132
Total Interest Expense	714	567	560
Total expense	$ 1,853	$ 1,765	$ 1,692