Loans (Details 9) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2012 Loans	Jun. 30, 2012 Loans
Commercial Loan Portfolio [Member]
Troubled debt restructurings on financing receivables with defaults payment
Financing receivable modifications subsequent default number of contract	3,000	7
Financing receivable modification subsequent default recorded investment	$ 239	$ 1,280
Commercial [Member] | Commercial Loan Portfolio [Member]
Troubled debt restructurings on financing receivables with defaults payment
Financing receivable modifications subsequent default number of contract		1
Financing receivable modification subsequent default recorded investment		60
Real estate commercial [Member] | Commercial Loan Portfolio [Member]
Troubled debt restructurings on financing receivables with defaults payment
Financing receivable modifications subsequent default number of contract	1	2
Financing receivable modification subsequent default recorded investment	69	836
Subtotal-commercial loan portfolio [Member] | Commercial Loan Portfolio [Member]
Troubled debt restructurings on financing receivables with defaults payment
Financing receivable modifications subsequent default number of contract	1	3
Financing receivable modification subsequent default recorded investment	69	896
Consumer loan portfolio (real estate residential) [Member]
Troubled debt restructurings on financing receivables with defaults payment
Financing receivable modifications subsequent default number of contract	2	4
Financing receivable modification subsequent default recorded investment	$ 170	$ 384