Great Southern Bancorp, Inc. -- Consolidated Statements of Comprehensive Income (Parentheticals) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statements of Comprehensive Income
Tax effect of unrealized appreciation (depreciation) on available-for-sale securities, taxes (credit)	$ 3,301	$ (7,516)	$ 3,444
Tax effect non-credit component of unrealized gain (loss) on available-for-sale debt securities for which a portion of an other-than-temporary impairment has been recognized, taxes (credit)	0	(20)	8
Tax effect of other-than-temporary impairment loss recognized in earnings on available for sale securities	0	0	(238)
Tax effect reclassification adjustment for gains included in net income, taxes (credit)	(749)	(85)	(933)
Tax effect of change in fair value of cash flow hedge, taxes (credit)	$ (88)	$ (19)	$ 0