Loans Receivable: Schedule of Non-performing assets and troubled debt restructured loans (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Receivables [Abstract] | ||
| Performing TDRs | $ 30,083 | $ 42,128 |
| Nonaccrual TDRs | 174 | 131 |
| Total TDRs | $ 30,257 | $ 42,259 |