11. Fair Value Measurements: Schedule of Inputs in Estimation of Fair Value of Level 3 Financial Instruments (Details) - Fair Value, Measurements, Recurring - Fair Value, Inputs, Level 3	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Minimum
Constant prepayment rate	7.58%	7.74%
Weighted average life	3 years 9 months	4 years 29 days
Maximum
Constant prepayment rate	8.52%	7.99%
Weighted average life	4 years 3 months	4 years 1 month 10 days

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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