Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2014

Regulatory Capital Requirements [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

										To Be Well
						For Capital				Capitalized Under
						Adequacy				Prompt Corrective
		Actual				Purposes				Action Provisions
(Dollars in thousands)		Amount	Ratio			Amount	Ratio			Amount	Ratio
DNB Financial Corporation
December 31, 2014:
Total risk-based capital	$	79,491	15.92	%	$	39,951	8.00	%		N/A	N/A
Tier 1 risk-based capital		74,419	14.90			19,975	4.00			N/A	N/A
Tier 1 (leverage) capital		74,419	10.55			28,215	4.00			N/A	N/A
December 31, 2013:
Total risk-based capital	$	74,505	16.40	%	$	36,338	8.00	%		N/A	N/A
Tier 1 risk-based capital		69,727	15.35			18,169	4.00			N/A	N/A
Tier 1 (leverage) capital		69,727	10.61			26,295	4.00			N/A	N/A
DNB First, N.A.
December 31, 2014:
Total risk-based capital	$	79,510	15.93	%	$	39,919	8.00	%	$	49,898	10.00	%
Tier 1 risk-based capital		74,438	14.92			19,959	4.00			29,939	6.00
Tier 1 (leverage) capital		74,438	10.56			28,198	4.00			35,247	5.00
December 31, 2013:
Total risk-based capital	$	74,527	16.42	%	$	36,306	8.00	%	$	45,381	10.00	%
Tier 1 risk-based capital		69,749	15.37			18,152	4.00			27,229	6.00
Tier 1 (leverage) capital		69,749	10.60			26,314	4.00			32,893	5.00