Business Combinations, Book Value and Estimated Fair Value of the Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands		12 Months Ended
	Nov. 18, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deposits [Abstract]
Fair Value of Common Stock Issued		$ 6,921	$ 0	$ 0
Delta National Bancorp [Member]
Deposits [Abstract]
Cash paid	$ 2,258
Fair Value of Common Stock Issued	6,921
Total Merger Consideration	9,179
Delta National Bancorp [Member] | Book Value [Member]
Assets Acquired [Abstract]
Cash and Cash Equivalents	34,009
Investments	38,727
Loans	32,885
Core Deposit Intangible	0
Deferred Tax Asset	0
Other Assets	6,263
Total Assets Acquired	111,884
Deposits [Abstract]
Demand	35,106
Interest-Bearing Transaction	20,572
Savings and Money Market	33,091
Time	14,930
Total Deposits	103,699
Other Liabilities	161
Total liabilities assumed	103,860
Delta National Bancorp [Member] | Fair Value [Member]
Assets Acquired [Abstract]
Cash and Cash Equivalents	34,009
Investments	38,727
Loans	32,410
Core Deposit Intangible	959
Deferred Tax Asset	893
Other Assets	7,873
Total Assets Acquired	114,871
Deposits [Abstract]
Demand	35,106
Interest-Bearing Transaction	20,572
Savings and Money Market	33,091
Time	14,930
Total Deposits	103,699
Other Liabilities	161
Total liabilities assumed	$ 103,860