Great Southern Bancorp, Inc. - Consolidated Statements of Financial Condition (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Held-to-maturity securities, fair value	$ 2,101	$ 1,300
Allowance for loan losses	41,232	41,487
Serial preferred stock - CPP
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized shares	1,000,000	1,000,000
Preferred stock, issued shares		58,000
Preferred stock, outstanding shares		58,000
Serial preferred stock - SBLF
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized shares	1,000,000	1,000,000
Preferred stock, issued shares	57,943
Preferred stock, outstanding shares	57,943
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized shares	20,000,000	20,000,000
Common stock, issued shares	13,479,856	13,454,000
Common stock, outstanding shares	13,479,856	13,454,000
Common stock warrants, issued shares		909,091
Income tax expense on change in unrealized holding gain on available-for-sale securities	$ 6,684	$ 2,273