Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments (Details 5) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jul. 02, 2012	Jun. 30, 2012
Recorded Investment
With no related allowance recorded	$ 79,470,000	$ 119,511,000
With an allowance recorded	21,194,000	19,081,000
Total impaired loans	100,664,000	138,592,000
Unpaid Contractual Principal Balance
With no related allowance recorded	100,767,000	162,309,000
With an allowance recorded	25,607,000	20,293,000
Total impaired loans	126,374,000	182,602,000
Related Allowance
Total impaired loans	3,025,000	2,403,000
Average Recorded Investment
With no related allowance recorded	95,827,000	116,332,000
With an allowance recorded	22,613,000	39,240,000
Total impaired loans	118,440,000	155,572,000
Interest Income Recognized
With no related allowance recorded	3,825,000	1,194,000
With an allowance recorded	236,000	4,000
Total impaired loans	4,061,000	1,198,000
Minimum limit for nonperforming loans to be individually evaluated for impairment			1,000,000	500,000
Minimum limit for measuring impairment at the relationship level for borrowers with multiple loans exceeding $1,000,000			1,000,000
Outstanding loan amount of previously reported impaired loans under $1,000,000	5,100,000
Commercial
Recorded Investment
With no related allowance recorded	17,721,000	18,761,000
With an allowance recorded	14,136,000	7,516,000
Total impaired loans	31,857,000	26,277,000
Unpaid Contractual Principal Balance
With no related allowance recorded	18,041,000	24,135,000
With an allowance recorded	18,156,000	8,038,000
Total impaired loans	36,197,000	32,173,000
Related Allowance
Total impaired loans	1,961,000	952,000
Average Recorded Investment
With no related allowance recorded	21,611,000	23,538,000
With an allowance recorded	8,871,000	10,532,000
Total impaired loans	30,482,000	34,070,000
Interest Income Recognized
With no related allowance recorded	1,664,000
With an allowance recorded	54,000
Total impaired loans	1,718,000
Commercial real estate mortgages
Recorded Investment
With no related allowance recorded	32,770,000	42,882,000
With an allowance recorded	5,384,000	10,203,000
Total impaired loans	38,154,000	53,085,000
Unpaid Contractual Principal Balance
With no related allowance recorded	37,555,000	49,110,000
With an allowance recorded	5,764,000	10,783,000
Total impaired loans	43,319,000	59,893,000
Related Allowance
Total impaired loans	586,000	1,326,000
Average Recorded Investment
With no related allowance recorded	33,002,000	29,190,000
With an allowance recorded	9,891,000	12,765,000
Total impaired loans	42,893,000	41,955,000
Interest Income Recognized
With no related allowance recorded	867,000	189,000
With an allowance recorded	182,000
Total impaired loans	1,049,000	189,000
Residential mortgage
Recorded Investment
With no related allowance recorded	7,537,000	8,347,000
With an allowance recorded	1,674,000	463,000
Total impaired loans	9,211,000	8,810,000
Unpaid Contractual Principal Balance
With no related allowance recorded	8,078,000	9,194,000
With an allowance recorded	1,687,000	507,000
Total impaired loans	9,765,000	9,701,000
Related Allowance
Total impaired loans	478,000	9,000
Average Recorded Investment
With no related allowance recorded	7,045,000	8,115,000
With an allowance recorded	1,101,000	3,071,000
Total impaired loans	8,146,000	11,186,000
Interest Income Recognized
With no related allowance recorded	178,000	48,000
With an allowance recorded		4,000
Total impaired loans	178,000	52,000
Fixed
Recorded Investment
With no related allowance recorded	2,135,000	3,482,000
With an allowance recorded		463,000
Unpaid Contractual Principal Balance
With no related allowance recorded	2,295,000	3,757,000
With an allowance recorded		507,000
Related Allowance
Total impaired loans		9,000
Average Recorded Investment
With no related allowance recorded	2,715,000	3,134,000
With an allowance recorded	93,000	1,568,000
Interest Income Recognized
With no related allowance recorded	123,000
Variable
Recorded Investment
With no related allowance recorded	5,402,000	4,865,000
With an allowance recorded	1,674,000
Unpaid Contractual Principal Balance
With no related allowance recorded	5,783,000	5,437,000
With an allowance recorded	1,687,000
Related Allowance
Total impaired loans	478,000
Average Recorded Investment
With no related allowance recorded	4,330,000	4,981,000
With an allowance recorded	1,008,000	1,503,000
Interest Income Recognized
With no related allowance recorded	55,000	48,000
With an allowance recorded		4,000
Real estate construction
Recorded Investment
With no related allowance recorded	19,097,000	45,510,000
Total impaired loans	19,097,000	45,510,000
Unpaid Contractual Principal Balance
With no related allowance recorded	33,694,000	74,283,000
Total impaired loans	33,694,000	74,283,000
Average Recorded Investment
With no related allowance recorded	31,348,000	50,664,000
With an allowance recorded	2,570,000	11,760,000
Total impaired loans	33,918,000	62,424,000
Interest Income Recognized
With no related allowance recorded	1,116,000	957,000
Total impaired loans	1,116,000	957,000
Construction
Recorded Investment
With no related allowance recorded	5,485,000	19,762,000
Unpaid Contractual Principal Balance
With no related allowance recorded	6,766,000	33,267,000
Average Recorded Investment
With no related allowance recorded	15,421,000	27,303,000
Interest Income Recognized
With no related allowance recorded	927,000	692,000
Land
Recorded Investment
With no related allowance recorded	13,612,000	25,748,000
Unpaid Contractual Principal Balance
With no related allowance recorded	26,928,000	41,016,000
Average Recorded Investment
With no related allowance recorded	15,927,000	23,361,000
With an allowance recorded	2,570,000	11,760,000
Interest Income Recognized
With no related allowance recorded	189,000	265,000
Home equity loans and lines of credit
Recorded Investment
With no related allowance recorded	2,329,000	3,562,000
With an allowance recorded		899,000
Total impaired loans	2,329,000	4,461,000
Unpaid Contractual Principal Balance
With no related allowance recorded	3,375,000	4,660,000
With an allowance recorded		965,000
Total impaired loans	3,375,000	5,625,000
Related Allowance
Total impaired loans		116,000
Average Recorded Investment
With no related allowance recorded	2,728,000	4,288,000
With an allowance recorded	180,000	1,112,000
Total impaired loans	2,908,000	5,400,000
Installment
Recorded Investment
With no related allowance recorded	16,000	449,000
Total impaired loans	16,000	449,000
Unpaid Contractual Principal Balance
With no related allowance recorded	24,000	927,000
Total impaired loans	24,000	927,000
Average Recorded Investment
With no related allowance recorded	93,000	531,000
Total impaired loans	93,000	531,000
Consumer
Recorded Investment
With no related allowance recorded	16,000	449,000
Unpaid Contractual Principal Balance
With no related allowance recorded	24,000	927,000
Average Recorded Investment
With no related allowance recorded	93,000	531,000
Lease financing
Average Recorded Investment
With no related allowance recorded		6,000
Total impaired loans		$ 6,000