Note 27: Condensed Parent Company Statements: Condensed Statement of Comprehensive Income -- Great Southern Bancorp, Inc. (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Unrealized Appreciation (Depreciation) on Available for Sale Securities, Net	$ (1,321)	$ 6,128	$ (13,959)
Statements of Comprehensive Income | Parent Company
Income (Loss) Attributable to Parent	46,502	43,529	33,729
Unrealized Appreciation (Depreciation) on Available for Sale Securities, Net	400	185	561
Change in Fair Value of Cash Flow Hedge, Net	(50)	(164)	(34)
Comprehensive Income of subsidiaries	(1,722)	4,553	(14,715)
Comprehensive Income parent	$ 45,130	$ 48,103	$ 19,541