Acquired Loans Part 6 (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012		Dec. 31, 2011
Acquired Loans Disclosure [Abstract]
Nonaccrual acquired loans not accounted for under FASB ASC Topic 310-30	$ 561		$ 491
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	11,252		6,498
Past Due Greater Than 90 Days	10,039	[1]	5,687	[1]
Total Past Due	21,291		12,185
Nonaccrual	561	[2]	491	[2]
Current Loans	153,236		68,491
Acquired loans	175,088		81,167
Covered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	6,620		6,272
Past Due Greater Than 90 Days	5,983	[1]	5,685	[1]
Total Past Due	12,603		11,957
Nonaccrual	561	[2]	491	[2]
Current Loans	61,255		64,356
Acquired loans	74,419		76,804
Noncovered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	4,632		226	[3]
Past Due Greater Than 90 Days	4,056	[1]	2	[1],[3]
Total Past Due	8,688		228	[3]
Nonaccrual	0	[2]	0	[2],[3]
Current Loans	91,981		4,135	[3]
Acquired loans	100,669		4,363	[3]
Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	465		253
Past Due Greater Than 90 Days	1,021	[1]	1,004	[1]
Total Past Due	1,486		1,257
Nonaccrual	445	[2]	386	[2]
Current Loans	2,009		2,566
Acquired loans	3,940		4,209
Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	2,899		0	[3]
Past Due Greater Than 90 Days	1,895	[1]	0	[1],[3]
Total Past Due	4,794		0	[3]
Nonaccrual	0	[2]	0	[2],[3]
Current Loans	9,552		0	[3]
Acquired loans	14,346		0	[3]
Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	2,042		1,339
Past Due Greater Than 90 Days	2,064	[1]	2,159	[1]
Total Past Due	4,106		3,498
Nonaccrual	92	[2]	92	[2]
Current Loans	26,023		28,284
Acquired loans	30,221		31,874
Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	1,223		5	[3]
Past Due Greater Than 90 Days	1,236	[1]	0	[1],[3]
Total Past Due	2,459		5	[3]
Nonaccrual	0	[2]	0	[2],[3]
Current Loans	17,950		71	[3]
Acquired loans	20,409		76	[3]
Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	3,302		4,464
Past Due Greater Than 90 Days	2,898	[1]	2,463	[1]
Total Past Due	6,200		6,927
Nonaccrual	0	[2]	0	[2]
Current Loans	24,537		23,962
Acquired loans	30,737		30,889
Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	228		0	[3]
Past Due Greater Than 90 Days	904	[1]	0	[1],[3]
Total Past Due	1,132		0	[3]
Nonaccrual	0	[2]	0	[2],[3]
Current Loans	53,822		0	[3]
Acquired loans	54,954		0	[3]
Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	739		176
Past Due Greater Than 90 Days	0	[1]	14	[1]
Total Past Due	739		190
Nonaccrual	0	[2]	0	[2]
Current Loans	4,348		4,936
Acquired loans	5,087		5,126
Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	102		0	[3]
Past Due Greater Than 90 Days	0	[1]	0	[1],[3]
Total Past Due	102		0	[3]
Nonaccrual	0	[2]	0	[2],[3]
Current Loans	593		0	[3]
Acquired loans	695		0	[3]
Commercial And Industrial Loans Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	72		37
Past Due Greater Than 90 Days	0	[1]	45	[1]
Total Past Due	72		82
Nonaccrual	24	[2]	13	[2]
Current Loans	2,672		2,876
Acquired loans	2,768		2,971
Commercial And Industrial Loans Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	16		19	[3]
Past Due Greater Than 90 Days	19	[1]	0	[1],[3]
Total Past Due	35		19	[3]
Nonaccrual	0	[2]	0	[2],[3]
Current Loans	5,697		50	[3]
Acquired loans	5,732		69	[3]
Consumer Loans Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	0		0
Past Due Greater Than 90 Days	0	[1]	0	[1]
Total Past Due	0		0
Nonaccrual	0	[2]	0	[2]
Current Loans	206		290
Acquired loans	206		290
Consumer Loans Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	164		202	[3]
Past Due Greater Than 90 Days	2	[1]	2	[1],[3]
Total Past Due	166		204	[3]
Nonaccrual	0	[2]	0	[2],[3]
Current Loans	4,022		3,942	[3]
Acquired loans	4,188		4,146	[3]
Other Loans Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	0		3
Past Due Greater Than 90 Days	0	[1]	0	[1]
Total Past Due	0		3
Nonaccrual	0	[2]	0	[2]
Current Loans	1,460		1,442
Acquired loans	1,460		1,445
Other Loans Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Past Due 30 - 89 Days	0		0	[3]
Past Due Greater Than 90 Days	0	[1]	0	[1],[3]
Total Past Due	0		0	[3]
Nonaccrual	0	[2]	0	[2],[3]
Current Loans	345		72	[3]
Acquired loans	$ 345		$ 72	[3]

[1] Past due greater than 90 days but still accruing interest.

[2] Acquired loans not accounted for under FASB ASC Topic 310-30.

[3] Acquired noncovered loans were included in LHFI at December 31, 2011.