Accounting Policies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Payment Quarter Segment	Dec. 31, 2014 USD ($) shares	Dec. 31, 2013 USD ($)
Certificates of Deposits in Other Banks [Abstract]
Maturity period of certificates of deposit in other banks	18 months
Loans [Abstract]
Threshold past due period after which loan must be well secured and in the process of collection to continue accruing interest	90 days
Minimum threshold period for not reclassifying loans as accruing loans	6 months
Allowance for Loan and Lease Losses [Abstract]
Charge off threshold for unsecured commercial loans considered uncollectible	90 days
Charge off threshold for closed-end consumer loans and uncollectible loans	120 days
Number of monthly payments before loan charge off | Payment	5
Current value assessment period for past due loans secured against real estate	90 days
Foreclosure proceedings initiated	120 days
Other Real Estate Owned [Abstract]
Typical frequency of periodic reviews, minimum	12 months
Typical frequency of periodic reviews, maximum	18 months
Maximum frequency of periodic reviews	24 months
Goodwill and Core Deposit Intangible [Abstract]
Goodwill	$ 65,490	$ 65,490
Finite-lived Intangible Assets [Roll Forward]
Beginning balance, January 1	477
Ending balance, December 31	$ 291	$ 477
Segment Reporting [Abstract]
Number of operating segments | Segment	1
Reclassifications [Abstract]
Stock dividend rate		10.00%
Dividend record date		May 15, 2014
New shares issued in stock dividend (in shares) | shares		1,582,137
Fair value of additional shares issued		$ 0
Minimum [Member]
Allowance for Loan and Lease Losses [Abstract]
Historical loan loss review period (in quarters) | Quarter	12
Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years
Furniture, Fixtures, and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	2 years
Furniture, Fixtures, and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Core Deposit Intangible [Member]
Finite-lived Intangible Assets [Roll Forward]
Beginning balance, January 1	$ 477	690	$ 904
Amortization	(186)	(213)	(214)
Ending balance, December 31	291	477	$ 690
Amortization of intangible assets for year one	200
Amortization of intangible assets for year two	$ 100
Retained Earnings [Member]
Reclassifications [Abstract]
Fair value of additional shares issued		(52,304)
Common Stock [Member]
Reclassifications [Abstract]
Fair value of additional shares issued		7,910
Additional Paid-in Capital [Member]
Reclassifications [Abstract]
Fair value of additional shares issued		$ 44,394