Regulatory Matters (Schedule of Actual Capital Amounts and Ratios) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital	$ 81,321	$ 79,491
Capital to Risk Weighted Assets	14.78%	15.92%
Capital Required for Capital Adequacy	$ 57,744	$ 39,951
Capital Required for Capital Adequacy to Risk Weighted Assets	10.50%	8.00%
Tangible Capital	$ 57,448
Tangible Capital to Tangible Assets	10.44%
Tangible Capital Required for Capital Adequacy	$ 38,502
Tangible Capital Required for Capital Adequacy to Tangible Assets	7.00%
Tier One Risk Based Capital	$ 66,448	$ 74,419
Tier One Risk Based Capital to Risk Weighted Assets	12.08%	14.90%
Tier One Risk Based Capital Required for Capital Adequacy	$ 46,753	$ 19,975
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	8.50%	4.00%
Tier One Leverage Capital	$ 66,448	$ 74,419
Tier One Leverage Capital to Average Assets	8.94%	10.55%
Tier One Leverage Capital Required for Capital Adequacy	$ 29,717	$ 28,215
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
DNB First, N.A. [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital	$ 80,286	$ 79,510
Capital to Risk Weighted Assets	14.63%	15.93%
Capital Required for Capital Adequacy	$ 57,624	$ 39,919
Capital Required for Capital Adequacy to Risk Weighted Assets	10.50%	8.00%
Capital Required to be Well Capitalized	$ 68,600	$ 49,898
Capital Required to be Well Capitalized to Risk Weighted Assets	12.50%	10.00%
Tangible Capital	$ 75,163
Tangible Capital to Tangible Assets	13.70%
Tangible Capital Required for Capital Adequacy	$ 38,416
Tangible Capital Required for Capital Adequacy to Tangible Assets	7.00%
Excess Tangible Capital	$ 49,392
Excess Tangible Capital Required for Capital Adequacy to Tangible Assets	9.00%
Tier One Risk Based Capital	$ 75,163	$ 74,438
Tier One Risk Based Capital to Risk Weighted Assets	13.70%	14.92%
Tier One Risk Based Capital Required for Capital Adequacy	$ 46,648	$ 19,959
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	8.50%	4.00%
Tier One Risk Based Capital Required to be Well Capitalized	$ 57,624	$ 29,939
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	10.50%	6.00%
Tier One Leverage Capital	$ 75,163	$ 74,438
Tier One Leverage Capital to Average Assets	10.13%	10.56%
Tier One Leverage Capital Required for Capital Adequacy	$ 29,670	$ 28,198
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Tier One Leverage Capital Required to be Well Capitalized	$ 37,087	$ 35,247
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%