Note 14: Disclosures About Fair Value of Financial Instruments: Schedule Of Financial Instruments Fair Value (Details) $ in Thousands	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Financial Assets | Cash and Cash Equivalents
Financial Instruments Owned Carrying Amount	$ 228,069	$ 279,769
Financial Instruments, Owned, at Fair Value	$ 228,069	$ 279,769
Fair Value by Fair Value Hierarchy Level	1	1
Financial Assets | Held-to-maturity Securities
Financial Instruments Owned Carrying Amount	$ 247	$ 247
Financial Instruments, Owned, at Fair Value	$ 256	$ 258
Fair Value by Fair Value Hierarchy Level	2	2
Financial Assets | Mortgage Loans Held for Sale
Financial Instruments Owned Carrying Amount	$ 4,782	$ 16,445
Financial Instruments, Owned, at Fair Value	$ 4,782	$ 16,445
Fair Value by Fair Value Hierarchy Level	2	2
Financial Assets | Loans Receivable
Financial Instruments Owned Carrying Amount	$ 3,727,641	$ 3,759,966
Financial Instruments, Owned, at Fair Value	$ 3,740,781	$ 3,766,709
Fair Value by Fair Value Hierarchy Level	3	3
Financial Assets | Accrued Interest Receivable
Financial Instruments Owned Carrying Amount	$ 11,032	$ 11,875
Financial Instruments, Owned, at Fair Value	$ 11,032	$ 11,875
Fair Value by Fair Value Hierarchy Level	3	3
Financial Assets | Investment in Federal Home Loan Bank Stock
Financial Instruments Owned Carrying Amount	$ 6,740	$ 13,034
Financial Instruments, Owned, at Fair Value	$ 6,740	$ 13,034
Fair Value by Fair Value Hierarchy Level	3	3
Financial Liabilities | Deposits
Financial Instruments Owned Carrying Amount	$ 3,688,663	$ 3,677,230
Financial Instruments, Owned, at Fair Value	$ 3,695,330	$ 3,683,751
Fair Value by Fair Value Hierarchy Level	3	3
Financial Liabilities | Federal Home Loan Bank Advances
Financial Instruments Owned Carrying Amount	$ 31,429	$ 31,452
Financial Instruments, Owned, at Fair Value	$ 32,163	$ 32,379
Fair Value by Fair Value Hierarchy Level	3	3
Financial Liabilities | Short-term Debt
Financial Instruments Owned Carrying Amount	$ 145,743	$ 286,023
Financial Instruments, Owned, at Fair Value	$ 145,743	$ 286,023
Fair Value by Fair Value Hierarchy Level	3	3
Financial Liabilities | Junior Subordinated Debt
Financial Instruments Owned Carrying Amount	$ 25,774	$ 25,774
Financial Instruments, Owned, at Fair Value	$ 25,774	$ 25,774
Fair Value by Fair Value Hierarchy Level	3	3
Financial Liabilities | Subordinated Debt
Financial Instruments Owned Carrying Amount	$ 73,575	$ 73,537
Financial Instruments, Owned, at Fair Value	$ 75,750	$ 76,031
Fair Value by Fair Value Hierarchy Level	2	2
Financial Liabilities | Accrued Interest Payable
Financial Instruments Owned Carrying Amount	$ 1,631	$ 2,723
Financial Instruments, Owned, at Fair Value	$ 1,631	$ 2,723
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	$ 85	$ 92
Financial Instruments, Owned, at Fair Value	$ 85	$ 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