Loans and Allowance For Loan Losses: Schedule of Loans (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Loans Receivable one-to four-family residential construction	$ 27,183,000	$ 23,976,000
Loans Receivable subdivision construction	40,555,000	61,140,000
Loans Receivable land development	68,533,000	68,771,000
Loans Receivable, Gross, Commercial, Construction	102,640,000	119,589,000
Loans Receivable owner occupied one- to four-family residential	89,881,000	91,994,000
Loans Receivable non-owner occupied one- to four-family residential	148,024,000	145,781,000
Loans Receivable, Gross, Commercial, Real Estate	620,023,000	639,857,000
Loans Receivable other residential	286,076,000	243,742,000
Loans Receivable commercial business	232,650,000	236,384,000
Loans Receivable industrial revenue bonds	45,337,000	59,750,000
Loans Receivable consumer auto	65,812,000	59,368,000
Loans Receivable consumer other	81,210,000	77,540,000
Loans Receivable home equity lines of credit	49,205,000	47,114,000
Loans Receivable FDIC supported loans, net of discounts (TeamBank)	91,407,000	128,875,000
Loans Receivable FDIC supported loans, net of discounts (Vantus Bank)	107,485,000	123,036,000
Loans Receivable FDIC supported loans, net of discounts (Sun Security Bank)	110,478,000	144,626,000
Loans Receivable FDIC supported loans,s net of discounts (InterBank)	276,976,000
Total gross loans receivable	2,443,475,000	2,271,543,000
Loans Receivable undisbursed portion of loans in process	(91,639,000)	(103,424,000)
Loans Receivable allowance for loan losses	(40,722,000)	(41,232,000)
Loans Receivable deferred loan fees and gains, net	(2,438,000)	(2,726,000)
Total net loans receivable	2,308,676,000	2,124,161,000
Loans Receivable weighted average interest rate	$ 5.60%	$ 5.86%