8. Fair Value: Schedule of Fair Value of Assets Measured on a Nonrecurring Basis (Details) (USD $)	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
Impaired loans	$ 41,506,251		$ 40,297,613
Other real estate owned	481,737	527,000	775,407	1,177,000	1,333,000	1,284,000
Impaired Loans, Carrying Value
Impaired loans	1,588,000		1,501,000
Fair Value, Inputs, Level 1
Other real estate owned	0		0
Fair Value, Inputs, Level 1 | Impaired Loans, Carrying Value
Impaired loans	0		0
Fair Value, Inputs, Level 2
Other real estate owned	0		0
Fair Value, Inputs, Level 2 | Impaired Loans, Carrying Value
Impaired loans	0		0
Fair Value, Inputs, Level 3
Other real estate owned	481,737		775,407
Fair Value, Inputs, Level 3 | Impaired Loans, Carrying Value
Impaired loans	1,588,000		1,501,000
Total fair value gain (loss)
Other real estate owned	0		(233,000)
Total fair value gain (loss) | Impaired Loans, Carrying Value
Impaired loans	$ 0		$ (843,000)