Loans (Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
With an allowance recorded [Abstract]
Related allowance	$ 8,700
Construction [Member]
Without an allowance recorded [Abstract]
Recorded investment	1,899	1,656
Unpaid principal balance	3,888	5,054
Average recorded investment	1,654	1,060
With an allowance recorded [Abstract]
Recorded investment	453	3,158
Unpaid principal balance	588	4,147
Related allowance	90	1,273
Average recorded investment	1,650	6,650
Total allowance recorded [Abstract]
Recorded investment	2,352	4,814
Unpaid principal balance	4,476	9,201
Related allowance	90	1,273
Average recorded investment	3,304	7,710
Commercial Mortgage [Member]
Without an allowance recorded [Abstract]
Recorded investment	6,356	4,583
Unpaid principal balance	8,552	6,730
Average recorded investment	5,638	2,563
With an allowance recorded [Abstract]
Recorded investment	2,968	4,806
Unpaid principal balance	2,968	4,806
Related allowance	1,249	1,706
Average recorded investment	5,286	4,233
Total allowance recorded [Abstract]
Recorded investment	9,324	9,389
Unpaid principal balance	11,520	11,536
Related allowance	1,249	1,706
Average recorded investment	10,924	6,796
Commercial [Member]
Without an allowance recorded [Abstract]
Recorded investment	6,782	4,356
Unpaid principal balance	6,782	5,481
Average recorded investment	5,709	2,485
With an allowance recorded [Abstract]
Recorded investment	20,153	6,264
Unpaid principal balance	21,907	7,067
Related allowance	7,302	4,069
Average recorded investment	12,223	5,571
Total allowance recorded [Abstract]
Recorded investment	26,935	10,620
Unpaid principal balance	28,689	12,548
Related allowance	7,302	4,069
Average recorded investment	17,932	8,056
Consumer - Home Equity [Member]
Without an allowance recorded [Abstract]
Recorded investment	927	927
Unpaid principal balance	927	927
Average recorded investment	927	927
With an allowance recorded [Abstract]
Recorded investment	189
Unpaid principal balance	189
Related allowance	51
Average recorded investment	63	65
Total allowance recorded [Abstract]
Recorded investment	1,116	927
Unpaid principal balance	1,116	927
Related allowance	51
Average recorded investment	990	992
Residential Mortgage [Member]
Without an allowance recorded [Abstract]
Recorded investment	2,016
Unpaid principal balance	2,016
Average recorded investment	672	253
With an allowance recorded [Abstract]
Recorded investment		91
Unpaid principal balance		91
Related allowance		69
Average recorded investment	60	56
Total allowance recorded [Abstract]
Recorded investment	2,016	91
Unpaid principal balance	2,016	91
Related allowance		69
Average recorded investment	$ 732	$ 309