GREAT SOUTHERN BANCORP, INC. AND SUBSIDIARIES - CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 18,238	$ 17,525
Proceeds from sales of loans held for sale	123,123	123,821
Originations of loans held for sale	(119,759)	(122,307)
Items not requiring (providing) cash:
Depreciation	3,721	2,520
Amortization of other assets	1,681	760
Compensation expense for stock option grants	360	340
Provision for loan losses	25,131	28,300
Net gains on loan sales	(2,352)	(2,704)
Net gains on sale or impairment of available-for-sale investment securities	(83)	(8,906)
Net (gains) losses on sale of premises and equipment	152	(33)
Loss on sale of foreclosed assets	867	1,066
Amortization (accretion) of deferred income, premiums, discounts and fair value adjustments	29,456	(1,300)
Deferred income taxes	(2,765)	6,599
Changes in:
Interest receivable	1,046	3,230
Prepaid expenses and other assets	(13,183)	30,810
Accounts payable and accrued expenses	(867)	742
Income taxes refundable/payable	(1,793)	(17,950)
Net cash provided by operating activities	62,973	62,513
CASH FLOWS FROM INVESTING ACTIVITIES
Net (increase) decrease in loans	(123,500)	100,546
Purchase of loans	(2,100)	(12,164)
Proceeds from sale of student loans	804	22,291
Purchase of additional business units	(1)	(25)
Purchase of premises and equipment	(12,446)	(6,100)
Proceeds from sale of premises and equipment	449	169
Proceeds from sale of foreclosed assets	10,446	21,932
Capitalized costs on foreclosed assets	(239)	(1,188)
Proceeds from sales of available-for-sale investment securities	21,217	296,948
Proceeds from maturing held-to-maturity investment securities	1,202	410
Proceeds from called investment securities	7,835	46,920
Principal reductions on mortgage-backed securities	89,451	151,079
Purchase of available-for-sale securities	(136,811)	(380,583)
Purchase of held-to-maturity securities	(840)	(30,000)
(Purchase) redemption of Federal Home Loan Bank stock	336	(360)
Net cash (used in) provided by investing activities	(144,197)	209,875
CASH FLOWS FROM FINANCING ACTIVITIES
Net decrease in certificates of deposit	(115,249)	(288,976)
Net increase in checking and savings deposits	138,905	154,421
Repayments of Federal Home Loan Bank advances	(1,402)	(16,853)
Net decrease in short-term borrowings and structured repo	(11,575)	(79,793)
Advances from borrowers for taxes and insurance	1,570	672
Proceeds from issuance of preferred stock	57,943
Redemption of preferred stock	(58,000)
Purchase of common stock warrant	(6,436)
Dividends paid	(9,466)	(9,423)
Stock options exercised	263	524
Net cash used in financing activities	(3,447)	(239,428)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(84,671)	32,960
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	429,971	444,576
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 345,300	$ 477,536