Acquired Loans Part 5 (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012		Dec. 31, 2011
Acquired Loans, Aging [Abstract]
Current	$ 153,236		$ 68,491
Past Due 30-89 Days	11,252		6,498
Past Due Greater Than 90 Days	10,039	[1]	5,687	[1]
Nonaccrual	561	[2]	491	[2]
Subtotal	21,291		12,185
Acquired loans	175,088		81,167
Percentage of risk of losses incurred on acquired covered loans (in hundredths)	20.00%		20.00%
Covered [Member]
Acquired Loans, Aging [Abstract]
Current	61,255		64,356
Past Due 30-89 Days	6,620		6,272
Past Due Greater Than 90 Days	5,983	[1]	5,685	[1]
Nonaccrual	561	[2]	491	[2]
Subtotal	12,603		11,957
Acquired loans	74,419		76,804
Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	91,981		4,135	[3]
Past Due 30-89 Days	4,632		226	[3]
Past Due Greater Than 90 Days	4,056	[1]	2	[1],[3]
Nonaccrual	0	[2]	0	[2],[3]
Subtotal	8,688		228	[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]
Current	2,009		2,566
Past Due 30-89 Days	465		253
Past Due Greater Than 90 Days	1,021	[1]	1,004	[1]
Nonaccrual	445	[2]	386	[2]
Subtotal	1,486		1,257
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]
Current	9,552		0	[3]
Past Due 30-89 Days	2,899		0	[3]
Past Due Greater Than 90 Days	1,895	[1]	0	[1],[3]
Nonaccrual	0	[2]	0	[2],[3]
Subtotal	4,794		0	[3]
Acquired loans	14,346		0	[3]
Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	26,023		28,284
Past Due 30-89 Days	2,042		1,339
Past Due Greater Than 90 Days	2,064	[1]	2,159	[1]
Nonaccrual	92	[2]	92	[2]
Subtotal	4,106		3,498
Acquired loans	30,221		31,874
Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	17,950		71	[3]
Past Due 30-89 Days	1,223		5	[3]
Past Due Greater Than 90 Days	1,236	[1]	0	[1],[3]
Nonaccrual	0	[2]	0	[2],[3]
Subtotal	2,459		5	[3]
Acquired loans	20,409		76	[3]
Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	24,537		23,962
Past Due 30-89 Days	3,302		4,464
Past Due Greater Than 90 Days	2,898	[1]	2,463	[1]
Nonaccrual	0	[2]	0	[2]
Subtotal	6,200		6,927
Acquired loans	30,737		30,889
Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	53,822		0	[3]
Past Due 30-89 Days	228		0	[3]
Past Due Greater Than 90 Days	904	[1]	0	[1],[3]
Nonaccrual	0	[2]	0	[2],[3]
Subtotal	1,132		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]
Current	4,348		4,936
Past Due 30-89 Days	739		176
Past Due Greater Than 90 Days	0	[1]	14	[1]
Nonaccrual	0	[2]	0	[2]
Subtotal	739		190
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]
Current	593		0	[3]
Past Due 30-89 Days	102		0	[3]
Past Due Greater Than 90 Days	0	[1]	0	[1],[3]
Nonaccrual	0	[2]	0	[2],[3]
Subtotal	102		0	[3]
Acquired loans	695		0	[3]
Commercial And Industrial Loans Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	2,672		2,876
Past Due 30-89 Days	72		37
Past Due Greater Than 90 Days	0	[1]	45	[1]
Nonaccrual	24	[2]	13	[2]
Subtotal	72		82
Acquired loans	2,768		2,971
Commercial And Industrial Loans Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	5,697		50	[3]
Past Due 30-89 Days	16		19	[3]
Past Due Greater Than 90 Days	19	[1]	0	[1],[3]
Nonaccrual	0	[2]	0	[2],[3]
Subtotal	35		19	[3]
Acquired loans	5,732		69	[3]
Consumer Loans Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	206		290
Past Due 30-89 Days	0		0
Past Due Greater Than 90 Days	0	[1]	0	[1]
Nonaccrual	0	[2]	0	[2]
Subtotal	0		0
Acquired loans	206		290
Consumer Loans Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	4,022		3,942	[3]
Past Due 30-89 Days	164		202	[3]
Past Due Greater Than 90 Days	2	[1]	2	[1],[3]
Nonaccrual	0	[2]	0	[2],[3]
Subtotal	166		204	[3]
Acquired loans	4,188		4,146	[3]
Other Loans Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	1,460		1,442
Past Due 30-89 Days	0		3
Past Due Greater Than 90 Days	0	[1]	0	[1]
Nonaccrual	0	[2]	0	[2]
Subtotal	0		3
Acquired loans	1,460		1,445
Other Loans Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	345		72	[3]
Past Due 30-89 Days	0		0	[3]
Past Due Greater Than 90 Days	0	[1]	0	[1],[3]
Nonaccrual	0	[2]	0	[2],[3]
Subtotal	0		0	[3]
Acquired loans	345		72	[3]
Commercial Portfolio Segment [Member] | Pass [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	53,766		23,810
Commercial Portfolio Segment [Member] | Pass [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	18,710		23,786	[4]
Commercial Portfolio Segment [Member] | Pass [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	35,056		24	[3]
Commercial Portfolio Segment [Member] | Special Mention [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	24,794		8,326
Commercial Portfolio Segment [Member] | Special Mention [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	8,466		8,326	[4]
Commercial Portfolio Segment [Member] | Special Mention [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	16,328		0	[3]
Commercial Portfolio Segment [Member] | Substandard [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	49,645		13,484
Commercial Portfolio Segment [Member] | Substandard [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	17,697		13,442	[4]
Commercial Portfolio Segment [Member] | Substandard [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	31,948		42	[3]
Commercial Portfolio Segment [Member] | Doubtful [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	7,992		3,683
Commercial Portfolio Segment [Member] | Doubtful [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	3,716		3,683	[4]
Commercial Portfolio Segment [Member] | Doubtful [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	4,276		0	[3]
Commercial Portfolio Segment [Member] | Commercial Subtotal [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	136,197		49,303
Commercial Portfolio Segment [Member] | Commercial Subtotal [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	48,589		49,237	[4]
Commercial Portfolio Segment [Member] | Commercial Subtotal [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	87,608		66	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Pass [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	1,098	[5]	1,212	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Pass [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	3,840		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Special Mention [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	192	[5]	194	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Special Mention [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	938		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Substandard [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	1,363	[5]	1,425	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Substandard [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	7,184		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Doubtful [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	819	[5]	909	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Doubtful [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	1,703		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Commercial Subtotal [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	3,472	[5]	3,740	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Commercial Subtotal [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	13,665		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Pass [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	4,323	[5]	6,402	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Pass [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	5,179		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Special Mention [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	1,673	[5]	1,256	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Special Mention [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	1,436		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Substandard [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	3,017	[5]	1,943	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Substandard [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	5,735		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Doubtful [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	92	[5]	19	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Doubtful [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	49
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Commercial Subtotal [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	9,105	[5]	9,620	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Commercial Subtotal [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	12,399		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Pass [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	10,875	[5]	13,302	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Pass [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	21,297		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Special Mention [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	4,667	[5]	5,275	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Special Mention [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	13,171		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Substandard [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	11,762	[5]	8,932	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Substandard [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	17,896		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Doubtful [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	2,187	[5]	2,134	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Doubtful [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	2,497		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Commercial Subtotal [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	29,491	[5]	29,643	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Commercial Subtotal [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	54,861		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Pass [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	874	[5]	878	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Pass [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	175		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Special Mention [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	562	[5]	429	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Special Mention [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	31		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Substandard [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	1,010	[5]	658	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Substandard [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	478		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Doubtful [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	46	[5]	86	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Doubtful [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0		0	[3]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Commercial Subtotal [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	2,492	[5]	2,051	[4]
Commercial Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Commercial Subtotal [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	684		0	[3]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Pass [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	1,345	[5]	1,780	[4]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Pass [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	4,325		27	[3]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Special Mention [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	1,305	[5]	1,109	[4]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Special Mention [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	752		0	[3]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Substandard [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	118	[5]	82	[4]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Substandard [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	628		42	[3]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Doubtful [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0	[5]	0	[4]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Doubtful [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	27		0	[3]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Commercial Subtotal [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	2,768	[5]	2,971	[4]
Commercial Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Commercial Subtotal [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	5,732		69	[3]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Pass [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0	[5]	0	[4]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Pass [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0		0	[3]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Special Mention [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0	[5]	0	[4]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Special Mention [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0		0	[3]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Substandard [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0	[5]	0	[4]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Substandard [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0		0	[3]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Doubtful [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0	[5]	0	[4]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Doubtful [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0		0	[3]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Commercial Subtotal [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0	[5]	0	[4]
Commercial Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Commercial Subtotal [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0		0	[3]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Pass [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	195	[5]	212	[4]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Pass [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	240		(3)	[3]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Special Mention [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	67	[5]	63	[4]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Special Mention [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0		0	[3]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Substandard [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	427	[5]	402	[4]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Substandard [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	27		0	[3]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Doubtful [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	572	[5]	535	[4]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Doubtful [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	0		0	[3]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Commercial Subtotal [Member] | Covered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	1,261	[5]	1,212	[4]
Commercial Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Commercial Subtotal [Member] | Noncovered [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	267		(3)	[3]
Consumer Portfolio Segment [Member]
Acquired Loans, Aging [Abstract]
Current	34,799		28,415
Past Due 30-89 Days	1,909		1,380
Past Due Greater Than 90 Days	2,145		2,031
Nonaccrual	38		38
Subtotal	38,891		31,864
Acquired loans	175,088		81,167
Consumer Portfolio Segment [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	22,708	[4]	24,326	[4]
Past Due 30-89 Days	1,156	[4]	1,173	[4]
Past Due Greater Than 90 Days	1,928	[4]	2,030	[4]
Nonaccrual	38	[4]	38	[4]
Subtotal	25,830	[4]	27,567	[4]
Acquired loans	74,419	[4]	76,804	[4]
Consumer Portfolio Segment [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	12,091		4,089
Past Due 30-89 Days	753		207
Past Due Greater Than 90 Days	217		1
Nonaccrual	0		0
Subtotal	13,061		4,297
Acquired loans	100,669		4,363
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	446	[4]	448	[4]
Past Due 30-89 Days	19	[4]	18	[4]
Past Due Greater Than 90 Days	3	[4]	3	[4]
Nonaccrual	0	[4]	0	[4]
Subtotal	468	[4]	469	[4]
Acquired loans	3,940	[4]	4,209	[4]
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	610		0
Past Due 30-89 Days	71		0
Past Due Greater Than 90 Days	0		0
Nonaccrual	0		0
Subtotal	681		0
Acquired loans	14,346		0
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	18,168	[4]	19,159	[4]
Past Due 30-89 Days	985	[4]	1,044	[4]
Past Due Greater Than 90 Days	1,925	[4]	2,013	[4]
Nonaccrual	38	[4]	38	[4]
Subtotal	21,116	[4]	22,254	[4]
Acquired loans	30,221	[4]	31,874	[4]
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Residential Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	7,277		71
Past Due 30-89 Days	518		5
Past Due Greater Than 90 Days	215		0
Nonaccrual	0		0
Subtotal	8,010		76
Acquired loans	20,409		76
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	1,139	[4]	1,246	[4]
Past Due 30-89 Days	107	[4]	0	[4]
Past Due Greater Than 90 Days	0	[4]	0	[4]
Nonaccrual	0	[4]	0	[4]
Subtotal	1,246	[4]	1,246	[4]
Acquired loans	30,737	[4]	30,889	[4]
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Nonresidential Properties Financing Receivables [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	93		0
Past Due 30-89 Days	0		0
Past Due Greater Than 90 Days	0		0
Nonaccrual	0		0
Subtotal	93		0
Acquired loans	54,954		0
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	2,550	[4]	2,953	[4]
Past Due 30-89 Days	45	[4]	108	[4]
Past Due Greater Than 90 Days	0	[4]	14	[4]
Nonaccrual	0	[4]	0	[4]
Subtotal	2,595	[4]	3,075	[4]
Acquired loans	5,087	[4]	5,126	[4]
Consumer Portfolio Segment [Member] | Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	11		0
Past Due 30-89 Days	0		0
Past Due Greater Than 90 Days	0		0
Nonaccrual	0		0
Subtotal	11		0
Acquired loans	695		0
Consumer Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	0	[4]	0	[4]
Past Due 30-89 Days	0	[4]	0	[4]
Past Due Greater Than 90 Days	0	[4]	0	[4]
Nonaccrual	0	[4]	0	[4]
Subtotal	0	[4]	0	[4]
Acquired loans	2,768	[4]	2,971	[4]
Consumer Portfolio Segment [Member] | Commercial And Industrial Loans Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	0		0
Past Due 30-89 Days	0		0
Past Due Greater Than 90 Days	0		0
Nonaccrual	0		0
Subtotal	0		0
Acquired loans	5,732		69
Consumer Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	206	[4]	290	[4]
Past Due 30-89 Days	0	[4]	0	[4]
Past Due Greater Than 90 Days	0	[4]	0	[4]
Nonaccrual	0	[4]	0	[4]
Subtotal	206	[4]	290	[4]
Acquired loans	206	[4]	290	[4]
Consumer Portfolio Segment [Member] | Consumer Loans Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	4,022		3,943
Past Due 30-89 Days	164		202
Past Due Greater Than 90 Days	2		1
Nonaccrual	0		0
Subtotal	4,188		4,146
Acquired loans	4,188		4,146
Consumer Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Covered [Member]
Acquired Loans, Aging [Abstract]
Current	199	[4]	230	[4]
Past Due 30-89 Days	0	[4]	3	[4]
Past Due Greater Than 90 Days	0	[4]	0	[4]
Nonaccrual	0	[4]	0	[4]
Subtotal	199	[4]	233	[4]
Acquired loans	1,460	[4]	1,445	[4]
Consumer Portfolio Segment [Member] | Other Loans Financing Receivable [Member] | Noncovered [Member]
Acquired Loans, Aging [Abstract]
Current	78		75
Past Due 30-89 Days	0		0
Past Due Greater Than 90 Days	0		0
Nonaccrual	0		0
Subtotal	78		75
Acquired loans	$ 345		$ 72

[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.

[4] Total dollar balances are presented in this table; however, these loans are covered by the loss-share agreement with the FDIC. TNB is at risk for only 20% of the losses incurred on these loans.

[5] Total dollar balances are presented in this table; however, these loans are covered by the loss-share agreement with the FDIC.TNB is at risk for only 20% of the losses incurred on these loans.