Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2012

Regulatory Capital Requirements [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]

								To Be Well
								Capitalized
								Under
								Prompt
					For Capital			Corrective
					Adequacy			Action
		Actual			Purposes			Provisions
(Dollars in thousands)		Amount	Ratio		Amount	Ratio		Amount	Ratio
DNB Financial Corporation
December 31, 2012:
Total risk-based capital	$	71,775	15.88%	$	36,153	8.00%		N/A	N/A
Tier 1 risk-based capital		66,115	14.63		18,076	4.00		N/A	N/A
Tier 1 (leverage) capital		66,115	10.50		25,189	4.00		N/A	N/A
December 31, 2011:
Total risk-based capital	$	66,716	15.57%	$	34,275	8.00%		N/A	N/A
Tier 1 risk-based capital		61,354	14.32		17,138	4.00		N/A	N/A
Tier 1 (leverage) capital		61,354	10.14		24,205	4.00		N/A	N/A
DNB First, N.A.
December 31, 2012:
Total risk-based capital	$	71,737	15.89%	$	36,119	8.00%	$	45,149	10.00%
Tier 1 risk-based capital		66,077	14.64		18,060	4.00		27,090	6.00
Tier 1 (leverage) capital		66,077	10.53		25,110	4.00		31,387	5.00
December 31, 2011:
Total risk-based capital	$	66,692	15.58%	$	34,242	8.00%	$	42,803	10.00%
Tier 1 risk-based capital		61,330	14.33		17,121	4.00		25,682	6.00
Tier 1 (leverage) capital		61,330	10.14		24,188	4.00		30,235	5.00