Loans, Allowance for Loan Losses, and Credit Quality (Detail Textuals)	6 Months Ended			12 Months Ended
	Jun. 30, 2015 USD ($)		Jun. 30, 2014 USD ($) Loan	Dec. 31, 2014 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans non accrual credit	$ 250,000
PCI loans acquired fair value	16,700,000
Nonaccretable mark	12,200,000
Impaired loans non accrual credit	3,100,000
PCI acquired loans have subsequently become impaired	700,000
PCI bringing acquired impaired loans	3,800,000
Number of loans classified as troubled debt restructuring, | Loan			12
Number of loans classified as troubled debt restructuring, two | Loan			11
Total troubled debt restructuring loan	4,400,000
Troubled debt restructuring premodification balance	3,900,000
Troubled debt restructurings	3,700,000		$ 3,700,000	$ 3,800,000
Premodification balance			$ 1,800,000
Specific reserve allocation	287,000
Balance of PCI loans				787,000
Loans Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans non accrual credit	$ 7,468,000			$ 8,666,000
Loans Receivable | Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of commercial and industrial loans				1
Premodification balance				$ 30,000
Specific reserve allocation				$ 30,000
Loans Receivable | Construction & land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of construction and land development loan	1			1
Premodification balance	$ 3,700,000			$ 3,800,000
Specific reserve allocation	$ 287,000	[1]		$ 358,000	[2]

[1] One construction and land development loan with a balance of $3.7 million had a specific reserve of $287,000. No other loans had a related allowance at June 30, 2015 and, therefore, the above disclosure was not expanded to include loans with and without a related allowance.

[2] One commercial & industrial loan with a balance of $30,000 had a specific reserve of $30,000. One construction & land development loan with a balance of $3.8 million had a specific reserve of $358,000. No other loans had a related allowance at December 31, 2014, and therefore, the above disclosure was not expanded to include loans with and without a related allowance.