Allowance for Loan and Lease Losses - Loans that were Evaluated for Impairment by Loan Segment (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Unpaid principal balance [Abstract]
With no related allowance recorded	$ 28,414	$ 25,029
With an allowance recorded	12,939	25,075
Carrying value [Abstract]
With no related allowance recorded	17,885	19,423
With an allowance recorded	8,401	9,405
Related allowance [Abstract]
Related allowance	800	2,026
Average recorded investment [Abstract]
With no related allowance recorded	17,410	28,620
With an allowance recorded	5,676	4,602
Interest income recognized [Abstract]
With no related allowance recorded	273	359
With an allowance recorded	0	7
Commercial Real Estate [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	10,090	10,417
With an allowance recorded	5,424	4,136
Carrying value [Abstract]
With no related allowance recorded	7,822	8,623
With an allowance recorded	5,200	2,335
Related allowance [Abstract]
Related allowance	605	835
Average recorded investment [Abstract]
With no related allowance recorded	7,443	11,163
With an allowance recorded	1,410	1,526
Interest income recognized [Abstract]
With no related allowance recorded	70	78
With an allowance recorded	0	0
Construction and Land Development [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	11,196	6,250
With an allowance recorded	0	6,180
Carrying value [Abstract]
With no related allowance recorded	4,082	3,464
With an allowance recorded	0	2,479
Related allowance [Abstract]
Related allowance	0	820
Average recorded investment [Abstract]
With no related allowance recorded	3,469	10,059
With an allowance recorded	708	923
Interest income recognized [Abstract]
With no related allowance recorded	27	187
With an allowance recorded	0	0
Commercial and Industrial [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	7,128	7,790
With an allowance recorded	2,315	9,585
Carrying value [Abstract]
With no related allowance recorded	5,981	6,820
With an allowance recorded	2,057	3,431
Related allowance [Abstract]
Related allowance	12	255
Average recorded investment [Abstract]
With no related allowance recorded	6,190	5,545
With an allowance recorded	2,627	682
Interest income recognized [Abstract]
With no related allowance recorded	149	73
With an allowance recorded	0	0
Multi Family [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded		0
With an allowance recorded		0
Carrying value [Abstract]
With no related allowance recorded		0
With an allowance recorded		0
Related allowance [Abstract]
Related allowance		0
Average recorded investment [Abstract]
With no related allowance recorded		780
With an allowance recorded		383
Interest income recognized [Abstract]
With no related allowance recorded		0
With an allowance recorded		0
Residential real estate [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	0	572
With an allowance recorded	667	685
Carrying value [Abstract]
With no related allowance recorded	0	516
With an allowance recorded	491	478
Related allowance [Abstract]
Related allowance	15	14
Average recorded investment [Abstract]
With no related allowance recorded	226	490
With an allowance recorded	446	714
Interest income recognized [Abstract]
With no related allowance recorded	27	21
With an allowance recorded	0	7
Leasing [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	0
With an allowance recorded	169	81
Carrying value [Abstract]
With no related allowance recorded	0
With an allowance recorded	169	81
Related allowance [Abstract]
Related allowance	67	55
Average recorded investment [Abstract]
With no related allowance recorded	9
With an allowance recorded	78	86
Interest income recognized [Abstract]
With no related allowance recorded	0
With an allowance recorded	0	0
Tax Certificates [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	4,364	4,408
Carrying value [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	484	601
Related allowance [Abstract]
Related allowance	101	47
Average recorded investment [Abstract]
With no related allowance recorded	73	583
With an allowance recorded	407	288
Interest income recognized [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	$ 0	$ 0