Note 14: Disclosures About Fair Value of Financial Instruments: Schedule Of Financial Instruments Fair Value (Details) $ in Thousands	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Financial Assets | Cash and Cash Equivalents
Financial Instruments Owned Carrying Amount	$ 269,228	$ 218,647
Financial Instruments, Owned, at Fair Value	$ 269,228	$ 218,647
Fair Value by Fair Value Hierarchy Level	1	1
Financial Assets | Held-to-maturity Securities
Financial Instruments Owned Carrying Amount	$ 353	$ 450
Financial Instruments, Owned, at Fair Value	$ 390	$ 499
Fair Value by Fair Value Hierarchy Level	2	2
Financial Assets | Mortgage Loans Held For Sale
Financial Instruments Owned Carrying Amount	$ 16,567	$ 14,579
Financial Instruments, Owned, at Fair Value	$ 16,567	$ 14,579
Fair Value by Fair Value Hierarchy Level	2	2
Financial Assets | Loans Receivable
Financial Instruments Owned Carrying Amount	$ 3,202,377	$ 3,038,848
Financial Instruments, Owned, at Fair Value	$ 3,211,512	$ 3,047,741
Fair Value by Fair Value Hierarchy Level	3	3
Financial Assets | Accrued Interest Receivable
Financial Instruments Owned Carrying Amount	$ 11,306	$ 11,219
Financial Instruments, Owned, at Fair Value	$ 11,306	$ 11,219
Fair Value by Fair Value Hierarchy Level	3	3
Financial Assets | Investment in Federal Home Loan Bank Stock
Financial Instruments Owned Carrying Amount	$ 12,605	$ 16,893
Financial Instruments, Owned, at Fair Value	$ 12,605	$ 16,893
Fair Value by Fair Value Hierarchy Level	3	3
Financial Liabilities | Deposits
Financial Instruments Owned Carrying Amount	$ 3,196,318	$ 2,990,840
Financial Instruments, Owned, at Fair Value	$ 3,198,714	$ 2,996,226
Fair Value by Fair Value Hierarchy Level	3	3
Financial Liabilities | Federal Home Loan Bank Advances
Financial Instruments Owned Carrying Amount	$ 193,594	$ 271,641
Financial Instruments, Owned, at Fair Value	$ 195,074	$ 273,568
Fair Value by Fair Value Hierarchy Level	3	3
Financial Liabilities | Short-term Debt
Financial Instruments Owned Carrying Amount	$ 217,408	$ 211,444
Financial Instruments, Owned, at Fair Value	$ 217,408	$ 211,444
Fair Value by Fair Value Hierarchy Level	3	3
Financial Liabilities | Subordinated Debt
Financial Instruments Owned Carrying Amount	$ 30,929	$ 30,929
Financial Instruments, Owned, at Fair Value	$ 30,929	$ 30,929
Fair Value by Fair Value Hierarchy Level	3	3
Financial Liabilities | Accrued Interest Payable
Financial Instruments Owned Carrying Amount	$ 1,076	$ 1,067
Financial Instruments, Owned, at Fair Value	$ 1,076	$ 1,067
Fair Value by Fair Value Hierarchy Level	3	3
Unrecognized Financial Instruments Net Of Contractual Value | Loan Origination Commitments
Fair Value by Fair Value Hierarchy Level	3	3
Unrecognized Financial Instruments Net Of Contractual Value | Letter of Credit
Financial Instruments Owned Carrying Amount	$ 112	$ 92
Financial Instruments, Owned, at Fair Value	$ 112	$ 92
Fair Value by Fair Value Hierarchy Level	3	3
Unrecognized Financial Instruments Net Of Contractual Value | Line of Credit
Fair Value by Fair Value Hierarchy Level	3	3