Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2015

Regulatory Matters [Abstract]

Schedule of Actual Capital Amounts and Ratios

										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, 2015:
Total risk-based capital	$	81,321	14.78	%	$	57,744	10.50	%		N/A	N/A
Common equity tier 1 capital		57,448	10.44			38,502	7.00			N/A	N/A
Tier 1 risk-based capital		66,448	12.08			46,753	8.50			N/A	N/A
Tier 1 (leverage) capital		66,448	8.94			29,717	4.00			N/A	N/A
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
DNB First, N.A.
December 31, 2015:
Total risk-based capital	$	80,286	14.63	%	$	57,624	10.50	%	$	68,600	12.50	%
Common equity tier 1 capital		75,163	13.70			38,416	7.00			49,392	9.00
Tier 1 risk-based capital		75,163	13.70			46,648	8.50			57,624	10.50
Tier 1 (leverage) capital		75,163	10.13			29,670	4.00			37,087	5.00
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