Loans and Allowance for Loan Losses (Details 7) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Individually Evaluated for Impairment	$ 63,775	$ 64,463
Purchase Credit Impaired Loans, Recorded Investment	211,486	245,650
Loans Collectively Evaluated for Impairment	1,773,680	1,725,145
Total Loans	2,048,941	2,035,258
Commercial Real Estate [Member]
Individually Evaluated for Impairment	34,093	26,076
Purchase Credit Impaired Loans, Recorded Investment	111,568	121,983
Loans Collectively Evaluated for Impairment	1,062,863	1,001,384
Total Loans	1,208,524	1,149,443
Commercial Construction [Member]
Individually Evaluated for Impairment	12,949	19,367
Purchase Credit Impaired Loans, Recorded Investment	27,652	34,666
Loans Collectively Evaluated for Impairment	156,947	163,161
Total Loans	197,548	217,194
Commercial and Industrial [Member]
Individually Evaluated for Impairment	776	1,682
Purchase Credit Impaired Loans, Recorded Investment	9,843	12,397
Loans Collectively Evaluated for Impairment	163,904	147,689
Total Loans	174,523	161,768
Leases [Member]
Individually Evaluated for Impairment	0	0
Purchase Credit Impaired Loans, Recorded Investment	0	0
Loans Collectively Evaluated for Impairment	14,949	13,209
Total Loans	14,949	13,209
Residential Construction [Member]
Individually Evaluated for Impairment	582	361
Purchase Credit Impaired Loans, Recorded Investment	970	5,741
Loans Collectively Evaluated for Impairment	31,573	28,627
Total Loans	33,125	34,729
Residential Mortgage [Member]
Individually Evaluated for Impairment	15,313	16,850
Purchase Credit Impaired Loans, Recorded Investment	59,139	68,273
Loans Collectively Evaluated for Impairment	334,985	361,152
Total Loans	409,437	446,275
Consumer and Other [Member]
Individually Evaluated for Impairment	62	127
Purchase Credit Impaired Loans, Recorded Investment	2,314	2,590
Loans Collectively Evaluated for Impairment	8,459	9,923
Total Loans	10,835	12,640
Total Loans [Member]
Total Loans	$ 2,048,941	$ 2,035,258