Borrowings and FHLB Stock (Details) - USD ($)	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Short-term Debt [Line Items]
Investment in FHLB stock	$ 2,146,000	$ 2,212,000
Federal Home Loan Bank of Seattle [Member]
Short-term Debt [Line Items]
Amount available to borrow under loan agreement	189,400,000	174,000,000
Outstanding borrowings	37,500,000	40,400,000
Pacific Coast Banker's Bank [Member]
Short-term Debt [Line Items]
Outstanding borrowings	0	0
Unused borrowing capacity	$ 2,000,000
Term period	1 year
Maturity date	Sep. 30, 2017
Zions Bank [Member]
Short-term Debt [Line Items]
Outstanding borrowings	$ 0	0
Line of credit facility, maximum borrowing capacity	9,000,000
Line of credit facility, minimum cash balance required	250,000
One-to Four- Family [Member] | Federal Home Loan Bank of Seattle [Member]
Short-term Debt [Line Items]
Loans used as collateral for credit facility	130,400,000
Commercial and Multifamily [Member] | Federal Home Loan Bank of Seattle [Member]
Short-term Debt [Line Items]
Loans used as collateral for credit facility	130,800,000
Home Equity [Member] | Federal Home Loan Bank of Seattle [Member]
Short-term Debt [Line Items]
Loans used as collateral for credit facility	24,400,000
Line of Credit [Member] | TIB-The Independent BankersBank [Member]
Short-term Debt [Line Items]
Outstanding borrowings	0	0
Unused borrowing capacity	10,000,000	10,000,000
Letter of Credit [Member] | Federal Home Loan Bank of Seattle [Member]
Short-term Debt [Line Items]
Letters of credit to secure public deposits	38,500,000	47,500,000
Net remaining amount available	113,400,000	86,100,000
Federal Reserve Bank Advances [Member]
Short-term Debt [Line Items]
Outstanding borrowings	0	0
Unused borrowing capacity	$ 33,200,000	$ 25,900,000