Business Combinations - Narrative (Details) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended	9 Months Ended	0 Months Ended		1 Months Ended	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Apr. 01, 2014 purchased_loan	Sep. 30, 2014	Sep. 30, 2014	Dec. 02, 2014	Nov. 30, 2014	Dec. 31, 2014	Dec. 31, 2014	Apr. 02, 2014
Business Acquisition [Line Items]
Gain on purchase of mortgage affiliate	$ 3,001,000	$ 0	$ 0
Merger and acquisition expense	1,962,000	536,000	0
Gain on purchase of mortgage affiliate	3,001,000	0	0
Goodwill	22,334,000	7,525,000							22,334,000	22,334,000
Alaska Pacific Bank
Acquired Finite-Lived Intangible Assets [Line Items]
Core Deposit Percentage of Total				0.50%
Business Acquisition [Line Items]
Voting interests acquired											100.00%
Acquisition cost				13,900,000
Number of shares issued				290,212
Cash payment made				6,423,000
Gain on purchase of mortgage affiliate				170,000
Purchased impaired loans				18
Accretable difference on purchased loans	0								0	0
Pro Forma, Interest Income	2,095,000	9,872,000			7,500,000
Noninterest Expense					4,300,000
Net Income (Loss) Attributable to Parent					2,900,000
Alaska Pacific Bank | Weighted Average
Business Acquisition [Line Items]
Shares issued (USD per share)											25.66
Alaska Pacific Bank | Professional and Outside Services
Business Acquisition [Line Items]
Merger and acquisition expense						1,500,000
Alaska Pacific Bank | Core Deposits
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets Acquired				623,000
RML
Business Acquisition [Line Items]
Voting interests acquired							76.50%
Acquisition cost							29,500,000
Cash payment made							18,240,000
Pro Forma, Interest Income	22,227,000	28,507,000							2,400,000
Noninterest Expense									1,900,000
Net Income (Loss) Attributable to Parent									484,000
Merger and acquisition expense	507,000
Equity Interest in Acquiree, Fair Value								9,000,000
Gain on purchase of mortgage affiliate										3,000,000
Liability for future earn out payments	7,300,000						7,318,000		7,300,000	7,300,000
Contingent consideration term							5 years
Goodwill							14,810,000
Equity interest percentage							100.00%	23.50%
RML | Tier One Earn Out
Business Acquisition [Line Items]
Percent of Revenue Range Used to Calculate Contingent Liability							40.00%
RML | Tier One Earn Out | Minimum
Business Acquisition [Line Items]
Revenue Range Used to Calculate Contingent Liability							1,000,000.0
RML | Tier One Earn Out | Maximum
Business Acquisition [Line Items]
Revenue Range Used to Calculate Contingent Liability							2,000,000.0
RML | Tier Two Earn Out
Business Acquisition [Line Items]
Percent of Revenue Range Used to Calculate Contingent Liability							50.00%
RML | Tier Two Earn Out | Minimum
Business Acquisition [Line Items]
Revenue Range Used to Calculate Contingent Liability							2,000,000.0
RML | Tier Two Earn Out | Maximum
Business Acquisition [Line Items]
Revenue Range Used to Calculate Contingent Liability							3,000,000.0
RML | Tier Three Earn Out
Business Acquisition [Line Items]
Percent of Revenue Range Used to Calculate Contingent Liability							70.00%
RML | Tier Three Earn Out | Minimum
Business Acquisition [Line Items]
Revenue Range Used to Calculate Contingent Liability							3,000,000.0
RML | Tier Three Earn Out | Maximum
Business Acquisition [Line Items]
Revenue Range Used to Calculate Contingent Liability							4,000,000.0
RML | Tier Four Earn Out
Business Acquisition [Line Items]
Percent of Revenue Range Used to Calculate Contingent Liability							85.00%
RML | Tier Four Earn Out | Minimum
Business Acquisition [Line Items]
Revenue Range Used to Calculate Contingent Liability							4,000,000.0
RML | Tier Four Earn Out | Maximum
Business Acquisition [Line Items]
Revenue Range Used to Calculate Contingent Liability							6,000,000.0
RML | Tier Five Earn Out
Business Acquisition [Line Items]
Percent of Revenue Range Used to Calculate Contingent Liability							55.00%
RML | Tier Five Earn Out | Minimum
Business Acquisition [Line Items]
Revenue Range Used to Calculate Contingent Liability							6,000,000.0
RML | Trade Names
Business Acquisition [Line Items]
Indefinite-lived Intangible Assets Acquired							$ 950,000