Enterprise Financial Services (EFSC) 10-Q 12 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	9 Months Ended
	Sep. 30, 2013	Oct. 31, 2013
Entity Information [Line Items]	'	'
Entity Registrant Name	'ENTERPRISE FINANCIAL SERVICES CORP	'
Entity Central Index Key	'0001025835	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	19,276,365

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets	'	'
Cash and due from banks	$35,238	$21,906
Federal funds sold	111	51
Interest-bearing deposits (including $730 and $3,270 pledged as collateral)	65,891	94,413
Total cash and cash equivalents	101,240	116,370
Interest-bearing deposits greater than 90 days	5,300	1,000
Securities available for sale	453,046	640,212
Mortgage loans held for sale	12,967	11,792
Portfolio loans not covered under FDIC loss share	2,110,825	2,106,039
Less: Allowance for loan losses	26,599	34,330
Portfolio loans not covered under FDIC loss share, net	2,084,226	2,071,709
Portfolio loans covered under FDIC loss share, net of the allowance for loan losses ($13,632 and $11,547, respectively)	145,180	189,571
Portfolio loans, net	2,229,406	2,261,280
Other real estate not covered under FDIC loss share	10,278	9,327
Other real estate covered under FDIC loss share	17,847	17,173
Other investments, at cost	15,485	14,294
Fixed assets, net	19,048	21,121
Accrued interest receivable	7,897	8,497
State tax credits, held for sale, including $20,139 and $23,020 carried at fair value, respectively	55,810	61,284
FDIC loss share receivable	40,054	61,475
Goodwill	30,334	30,334
Intangibles, net	6,136	7,406
Other assets	103,214	64,221
Total assets	3,108,062	3,325,786
Liabilities and Shareholders' Equity	'	'
Demand deposits	619,562	686,805
Interest-bearing transaction accounts	213,708	272,753
Money market accounts	903,561	1,036,125
Savings	88,443	83,458
Certificates of deposit:	'	'
$100 and over	462,971	396,896
Other	159,672	182,814
Total deposits	2,447,917	2,658,851
Subordinated debentures	63,081	85,081
Federal Home Loan Bank advances	120,000	80,000
Other borrowings	167,365	233,370
Notes Payable to Bank	10,800	11,700
Accrued interest payable	885	1,282
Other liabilities	20,274	19,757
Total liabilities	2,830,322	3,090,041
Shareholders' equity:	'	'
Preferred stock, $0.01 par value; 5,000,000 shares authorized; 0 shares issued and outstanding	0	0
Common stock, $0.01 par value; 30,000,000 shares authorized; 19,352,365 and 18,088,152 shares issued, respectively	194	181
Treasury stock, at cost; 76,000 shares	-1,743	-1,743
Additional paid in capital	198,493	173,299
Retained earnings	82,777	56,218
Accumulated other comprehensive income	-1,981	7,790
Total shareholders' equity	277,740	235,745
Total liabilities and shareholders' equity	$3,108,062	$3,325,786

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Assets	'	'
Collateral pledged	$730	$3,270
Allowance for loan losses on Portfolio loans, covered under FDIC loss share	13,632	11,547
State tax credits, held for sale, carried at fair value	$20,139	$23,020
Shareholders' equity:	'	'
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	19,352,365	18,088,152
Treasury stock, shares	76,000	76,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Interest income:	'	'	'	'
Interest and fees on loans	$34,396	$39,886	$109,330	$111,519
Interest on debt securities:	'	'	'	'
Taxable	2,043	2,628	6,210	7,440
Nontaxable	301	264	907	734
Interest on interest-bearing deposits	37	53	130	195
Dividends on equity securities	106	43	277	230
Total interest income	36,883	42,874	116,854	120,118
Interest expense:	'	'	'	'
Interest-bearing transaction accounts	99	182	360	566
Money market accounts	714	1,024	2,348	3,694
Savings	56	68	171	209
Certificates of deposit:	'	'	'	'
$100 and over	1,326	1,691	4,207	5,500
Other	439	597	1,385	2,103
Subordinated debentures	679	982	2,580	3,111
Federal Home Loan Bank advances	757	721	2,221	2,327
Notes payable and other borrowings	239	125	801	362
Total interest expense	4,309	5,390	14,073	17,872
Net interest income	32,574	37,484	102,781	102,246
Provision for loan losses not covered under FDIC loss share	-652	1,048	-3,094	2,841
Provision for loan losses covered under FDIC loss share	2,811	10,889	2,789	13,380
Net interest income after provision for loan losses	30,415	25,547	103,086	86,025
Noninterest income:	'	'	'	'
Wealth Management revenue	1,698	1,825	5,419	5,525
Service charges on deposit accounts	1,768	1,456	5,025	4,199
Other service charges and fee income	722	676	2,030	1,848
Gain on sale of other real estate	472	739	1,562	3,152
Gain on state tax credits, net	308	256	1,214	1,180
Gain on sale of investment securities	611	0	1,295	1,156
Change in FDIC loss share receivable	-2,849	1,912	-13,647	-6,738
Miscellaneous income	986	968	2,055	2,338
Total noninterest income	3,716	7,832	4,953	12,660
Noninterest expense:	'	'	'	'
Employee compensation and benefits	10,777	11,441	33,006	32,956
Occupancy	1,333	1,399	4,098	4,162
Furniture and equipment	356	384	1,200	1,234
Data processing	1,143	881	3,000	2,530
FDIC and other insurance	900	862	2,592	2,658
Loan legal and other real estate expense	1,247	1,187	3,355	5,216
Professional Fees	1,041	1,288	3,394	3,640
Other	4,443	3,840	12,491	11,664
Total noninterest expense	21,240	21,282	63,136	64,060
Income before income tax expense	12,891	12,097	44,903	34,625
Income tax expense	4,481	4,167	15,420	11,744
Net income	8,410	7,930	29,483	22,881
Net Income (Loss) Available to Common Stockholders, Basic	$8,410	$7,282	$29,483	$20,948
Earnings per common share	'	'	'	'
Basic	$0.45	$0.41	$1.61	$1.17
Diluted	$0.44	$0.39	$1.55	$1.14

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income	$8,410	$7,930	$29,483	$22,881
Other comprehensive income, net of tax:	'	'	'	'
Unrealized gain/(loss) on investment securities arising during the period, net of income tax expense/(benefit) for three months of $598 and $1,828, and for nine months of ($5,716) and $3,926, respectively	939	3,248	-8,981	6,526
Less reclassification adjustment for realized gain on sale of securities included in net income, net of income tax expense for three months of $238 and $0, and for nine months of $505 and $416, respectively	-373	0	-790	-740
Total other comprehensive income (loss)	566	3,248	-9,771	5,786
Total comprehensive income	$8,976	$11,178	$19,712	$28,667

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	$598	$1,828	($5,716)	$3,926
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax	$238	$0	$505	$416

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Shareholders' Equity (USD $)	Total	Preferred Stock [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Parent [Member]
In Thousands, unless otherwise specified
Balance at Dec. 31, 2011	'	$33,293	$178	($1,743)	$169,138	$35,097	$3,602	$239,565
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net income	22,881	0	0	0	0	22,881	0	22,881
Total comprehensive income	28,667	0	0	0	0	0	5,786	5,786
Cash dividends paid on common shares, $0.1575 per share	'	0	0	0	0	-2,813	0	-2,813
Cash dividends paid on preferred stock	'	0	0	0	0	-1,312	0	-1,312
Preferred stock accretion of discount	'	621	0	0	0	-621	0	0
Issuance under equity compensation plans, net	'	0	2	0	1,530	0	0	1,532
Stock Issued During Period, Value, Conversion of Convertible Securities	0	'	'	'	'	'	'	'
Share-based compensation	'	0	0	0	1,791	0	0	1,791
Excess tax benefit related to equity compensation plans	'	0	0	0	86	0	0	86
Balance at Sep. 30, 2012	'	33,914	180	-1,743	172,545	53,232	9,388	267,516
Balance at Dec. 31, 2012	235,745	0	181	-1,743	173,299	56,218	7,790	235,745
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net income	29,483	0	0	0	0	29,483	0	29,483
Total comprehensive income	19,712	0	0	0	0	0	-9,771	-9,771
Cash dividends paid on common shares, $0.1575 per share	'	0	0	0	0	-2,924	0	-2,924
Repurchase of common stock warrants	'	0	0	0	-1,006	0	0	-1,006
Issuance under equity compensation plans, net	'	0	1	0	2,550	0	0	2,551
Stock Issued During Period, Value, Conversion of Convertible Securities	20,443	0	12	0	20,431	0	0	20,443
Share-based compensation	'	0	0	0	3,136	0	0	3,136
Excess tax benefit related to equity compensation plans	'	0	0	0	83	0	0	83
Balance at Sep. 30, 2013	$277,740	$0	$194	($1,743)	$198,493	$82,777	($1,981)	$277,740

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash dividends paid on common shares, per share	$0.16	$0.16
Issuance under equity compensation plans, shares	87,743	189,848
Trust preferred securities conversion	1,176,470	0

Condensed_Consolidated_Stateme5

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:	'	'
Net income	$29,483	$22,881
Adjustments to reconcile net income to net cash provided by operating activities	'	'
Depreciation	1,936	1,944
Provision for loan losses	-305	16,221
Deferred income taxes	180	-1,982
Net amortization of debt securities	4,579	5,839
Amortization of intangible assets	1,540	1,440
Gain on sale of investment securities	-1,295	-1,156
Mortgage loans originated for sale	-64,463	-71,085
Proceeds from mortgage loans sold	70,884	68,987
Gain on sale of other real estate	-1,562	-3,152
Gain on state tax credits, net	-1,214	-1,180
Share-based compensation	3,136	1,791
Valuation adjustment on other real estate	962	2,201
Net accretion of loan discount and indemnification asset	-13,853	-18,754
Changes in:	'	'
Accrued interest receivable	600	-1,288
Accrued interest payable	-397	-385
Prepaid FDIC insurance	2,607	1,837
Other assets	-21,322	1,212
Other liabilities	516	12,567
Net cash provided by operating activities	12,012	37,938
Cash flows from investing activities:	'	'
Net increase in loans	36,955	-10,478
Net cash proceeds received from FDIC loss share receivable	9,654	85,173
Proceeds from the sale of debt and equity securities, available for sale	159,604	110,876
Proceeds from the maturity of debt and equity securities, available for sale	69,017	91,498
Proceeds from the redemption of other investments	26,695	6,296
Proceeds from the sale of state tax credits held for sale	8,126	4,408
Proceeds from the sale of other real estate	15,303	44,273
Payments for the purchase/origination of:	'	'
Available for sale debt and equity securities	-60,732	-214,935
Other investments	-28,143	-8,138
Payments to Acquire Life Insurance Policies	-20,000	0
State tax credits held for sale	-1,365	-18,577
Fixed assets	-1,122	-4,433
Net cash provided by investing activities	213,992	85,963
Cash flows from financing activities:	'	'
Net increase in noninterest-bearing deposit accounts	-67,242	35,591
Net decrease in interest-bearing deposit accounts	-143,691	-276,011
Proceeds from Federal Home Loan Bank advances	743,000	157,500
Repayments of Federal Home Loan Bank advances	-703,000	-133,500
Repayments of Long-term Debt	-900	0
Repayments of Subordinated Debt	-2,000	0
Net decrease in other borrowings	-66,005	-7,440
Cash dividends paid on common stock	-2,924	-2,813
Excess tax benefit of share-based compensation	83	86
Payments for Repurchase of Preferred Stock and Preference Stock	-1,006	0
Cash dividends paid on preferred stock	0	-1,312
Proceeds from the issuance of equity instruments	2,551	1,530
Net cash used in financing activities	-241,134	-226,369
Net decrease in cash and cash equivalents	-15,130	-102,468
Cash and cash equivalents, beginning of period	116,370	188,143
Cash and cash equivalents, end of period	101,240	85,675
Supplemental disclosures of cash flow information:	'	'
Cash paid during the period for interest	14,470	17,487
Cash paid during the period for income taxes	24,348	10,953
Noncash transactions:	'	'
Transfer to other real estate owned in settlement of loans	21,116	19,799
Sales of other real estate financed	5,564	5,264
Stock Issued During Period, Value, Conversion of Convertible Securities	$20,443	$0

Summary_of_Significant_Account

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	The significant accounting policies used by Enterprise Financial Services Corp (the “Company” or “Enterprise”) in the preparation of the condensed consolidated financial statements are summarized below:
	Business and Consolidation
	Enterprise is a financial holding company that provides a full range of banking and wealth management services to individuals and corporate customers located in the St. Louis, Kansas City and Phoenix metropolitan markets through its banking subsidiary, Enterprise Bank & Trust (the “Bank”).
	Operating results for the three and nine months ended September 30, 2013 are not necessarily indicative of the results that may be expected for any other interim period or for the year ending December 31, 2013. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012.
	Basis of Financial Statement Presentation
	The condensed consolidated financial statements of the Company and its subsidiaries have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. They do not include all information and footnotes required by U.S. GAAP for annual financial statements. The condensed consolidated financial statements include the accounts of the Company and its subsidiaries, all of which are wholly owned. All intercompany accounts and transactions have been eliminated. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included.
	The Company has adopted the new accounting guidance surrounding comprehensive income by presenting a separate Statement of Comprehensive Income. The Statement of Comprehensive Income includes the amount and the related tax impact that have been reclassified from accumulated other comprehensive income to net income. The reclassification adjustment for unrealized gain on sale of securities included in net income has been recorded through the gain on sale of investment securities line item, within noninterest income, in the Company's Condensed Consolidated Statements of Operations.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	EARNINGS PER SHARE
	Basic earnings per common share data is calculated by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. Common shares outstanding include common stock and restricted stock awards where recipients have satisfied the vesting terms. Diluted earnings per common share gives effect to all dilutive potential common shares outstanding during the period using the treasury stock method and the if-converted method for convertible trust preferred securities.
	The following table presents a summary of per common share data and amounts for the periods indicated.
		Three months ended September 30,					Nine months ended September 30,
	(in thousands, except per share data)	2013		2012			2013		2012
	Net income as reported	$	8,410	$	7,930		$	29,483	$	22,881
	Preferred stock dividend	—		(436		)	—		(1,312		)
	Accretion of preferred stock discount	—		(212		)	—		(621		)
	Net income available to common shareholders	$	8,410	$	7,282		$	29,483	$	20,948
	Impact of assumed conversions
	Interest on 9% convertible trust preferred securities, net of income tax	217		371			926		1,113
	Net income available to common shareholders and assumed conversions	$	8,627	$	7,653		$	30,409	$	22,061
	Weighted average common shares outstanding	18,779		17,876			18,288		17,829
	Incremental shares from assumed conversions of convertible trust preferred securities	851		1,439			1,241		1,439
	Additional dilutive common stock equivalents	200		100			153		34
	Weighted average diluted common shares outstanding	19,830		19,415			19,682		19,302
	Basic earnings per common share:	$	0.45	$	0.41		$	1.61	$	1.17
	Diluted earnings per common share:	$	0.44	$	0.39		$	1.55	$	1.14
	For the three months ended September 30, 2013 and 2012, the amount of common stock equivalents that were excluded from the earnings per share calculations because their effect was anti-dilutive was 474,267, and 1.0 million common stock equivalents (including 324,074 common stock warrants), respectively. For the nine months ended September 30, 2013 and 2012, the amount of common stock equivalents that were excluded from the earnings per share calculations because their effect was anti-dilutive was 488,318 (including 9,497 average common stock warrants), and 1.0 million common stock equivalents (including 324,074 common stock warrants), respectively.

Investments

Investments	9 Months Ended
	Sep. 30, 2013
Investments [Abstract]	'
Investments	'
	INVESTMENTS
	The following table presents the amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale:
		September 30, 2013
	(in thousands)	Amortized Cost		Gross		Gross			Fair Value
				Unrealized Gains		Unrealized Losses
	Available for sale securities:
	Obligations of U.S. Government-sponsored enterprises	$	93,680	$	599	$	(305	)	$	93,974
	Obligations of states and political subdivisions	51,702		1,079		(1,588		)	51,193
	Residential mortgage-backed securities	310,907		3,127		(6,155		)	307,879
		$	456,289	$	4,805	$	(8,048	)	$	453,046
		December 31, 2012
	(in thousands)	Amortized Cost		Gross		Gross			Fair Value
				Unrealized Gains		Unrealized Losses
	Available for sale securities:
	Obligations of U.S. Government-sponsored enterprises	$	149,039	$	3,329	$	—		$	152,368
	Obligations of states and political subdivisions	51,202		2,279		(478		)	53,003
	Residential mortgage-backed securities	427,221		7,884		(264		)	434,841
		$	627,462	$	13,492	$	(742	)	$	640,212
	At September 30, 2013, and December 31, 2012, there were no holdings of securities of any one issuer in an amount greater than 10% of shareholders’ equity, other than the U.S. government agencies and sponsored enterprises. The residential mortgage-backed securities are all issued by U.S. government sponsored enterprises. Available for sale securities having a fair value of $227.5 million and $359.3 million at September 30, 2013, and December 31, 2012, respectively, were pledged as collateral to secure deposits of public institutions and for other purposes as required by law or contract provisions.
	The amortized cost and estimated fair value of debt securities classified as available for sale at September 30, 2013, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. The weighted average life of the mortgage-backed securities is approximately 5 years.
	(in thousands)	Amortized Cost		Estimated Fair Value
	Due in one year or less	$	885	$	892
	Due after one year through five years	107,062		107,703
	Due after five years through ten years	23,333		23,516
	Due after ten years	14,102		13,056
	Mortgage-backed securities	310,907		307,879
		$	456,289	$	453,046
	The following table represents a summary of available-for-sale investment securities that had an unrealized loss:
		September 30, 2013
		Less than 12 months				12 months or more						Total
	(in thousands)	Fair Value		Unrealized Losses		Fair Value			Unrealized Losses			Fair Value		Unrealized Losses
	Obligations of U.S. Government-sponsored enterprises	$	30,355	$	305	$	—		$	—		$	30,355	$	305
	Obligations of states and political subdivisions	$	20,306	$	1,230	$	3,042		$	358		$	23,348	$	1,588
	Residential mortgage-backed securities	188,849		5,692		8,779			463			197,628		6,155
		$	239,510	$	7,227	$	11,821		$	821		$	251,331	$	8,048
		December 31, 2012
		Less than 12 months				12 months or more						Total
	(in thousands)	Fair Value		Unrealized Losses		Fair Value			Unrealized Losses			Fair Value		Unrealized Losses
	Obligations of states and political subdivisions	6,434		122		3,389			356			9,823		478
	Residential mortgage-backed securities	40,471		143		11,266			121			51,737		264
		$	46,905	$	265	$	14,655		$	477		$	61,560	$	742
	The unrealized losses at both September 30, 2013, and December 31, 2012, were primarily attributable to changes in market interest rates since the securities were purchased. Management systematically evaluates investment securities for other-than-temporary declines in fair value on a quarterly basis. This analysis requires management to consider various factors, which include (1) the present value of the cash flows expected to be collected compared to the amortized cost of the security, (2) duration and magnitude of the decline in value, (3) the financial condition of the issuer or issuers, (4) structure of the security and (5) the intent to sell the security or whether it is more likely than not that the Company would be required to sell the security before its anticipated recovery in market value. At September 30, 2013, management performed its quarterly analysis of all securities with an unrealized loss and concluded no individual securities were other-than-temporarily impaired.
	The gross gains and gross losses realized from sales of available-for-sale investment securities were as follows:
		Three months ended September 30,				Nine months ended September 30,
	(in thousands)	2013		2012		2013			2012
	Gross gains realized	$	611	$	—	$	1,477		$	1,399
	Gross losses realized	—		—		(182		)	(243		)
	Proceeds from sales	36,710		—		159,604			110,876

Portfolio_Loans_Not_Covered_by

Portfolio Loans Not Covered by Loss Share ("Non-covered")	9 Months Ended
	Sep. 30, 2013
PORTFOLIO LOANS NOT COVERED BY LOSS SHARE [Abstract]	'
Portfolio Loans Not Covered by Loss Share (Non-covered)	'
	PORTFOLIO LOANS NOT COVERED BY LOSS SHARE ("Non-covered")
	Below is a summary of Non-covered loans by category at September 30, 2013, and December 31, 2012:
	(in thousands)	September 30, 2013			December 31, 2012
	Real Estate Loans:
	Construction and Land Development	$	114,608		$	160,911
	Commercial real estate - Investor Owned	451,102			486,467
	Commercial real estate - Owner Occupied	350,653			333,242
	Residential real estate	150,320			145,558
	Total real estate loans	$	1,066,683		$	1,126,178
	Commercial and industrial	1,007,398			962,884
	Consumer & other	35,862			16,966
	Portfolio Loans	$	2,109,943		$	2,106,028
	Unearned loan costs, net	882			11
	Portfolio loans, including unearned loan costs	$	2,110,825		$	2,106,039
	The Company grants commercial, residential, and consumer loans primarily in the St. Louis, Kansas City and Phoenix metropolitan areas. The Company has a diversified loan portfolio, with no particular concentration of credit in any one economic sector; however, a substantial portion of the portfolio is concentrated in and secured by real estate. The ability of the Company’s borrowers to honor their contractual obligations is partially dependent upon the local economy and its effect on the real estate market.
	A summary of the year-to-date activity in the allowance for loan losses and the recorded investment in Non-covered loans by portfolio class and category based on impairment method through September 30, 2013, and at December 31, 2012, is as follows:
	(in thousands)	Commercial & Industrial			Commercial			Commercial			Construction and Land Development			Residential Real Estate			Consumer & Other			Qualitative Adjustment			Total
					Real Estate			Real Estate
					Owner Occupied			Investor Owned
	Allowance for Loan Losses:
	Balance at	$	10,064		$	4,192		$	10,403		$	5,239		$	2,026		$	31		$	2,375		$	34,330
	31-Dec-12
	Provision charged to expense	120			179			953			(127		)	675			46			7			1,853
	Losses charged off	(206		)	(312		)	(3,052		)	(190		)	(986		)	(34		)	—			(4,780		)
	Recoveries	298			5			336			14			396			—			—			1,049
	Balance at	$	10,276		$	4,064		$	8,640		$	4,936		$	2,111		$	43		$	2,382		$	32,452
	31-Mar-13
	Provision charged to expense	(320		)	(139		)	(2,273		)	(998		)	(299		)	1			(267		)	(4,295		)
	Losses charged off	(400		)	(32		)	(176		)	(144		)	—			—			—			(752		)
	Recoveries	118			17			24			21			34			—			—			214
	Balance at	$	9,674		$	3,910		$	6,215		$	3,815		$	1,846		$	44		$	2,115		$	27,619
	30-Jun-13
	Provision charged to expense	117			(233		)	(276		)	(1,291		)	(612		)	19			1,624			(652		)
	Losses charged off	(1,817		)	(56		)	(504		)	(85		)	(52		)	—			—			(2,514		)
	Recoveries	906			14			360			385			481			—			—			2,146
	Balance at	$	8,880		$	3,635		$	5,795		$	2,824		$	1,663		$	63		$	3,739		$	26,599
	30-Sep-13
	(in thousands)	Commercial & Industrial			Commercial			Commercial			Construction and Land Development			Residential Real Estate			Consumer & Other			Qualitative Adjustment			Total
					Real Estate			Real Estate
					Owner Occupied			Investor Owned
	Balance September 30, 2013
	Allowance for Loan Losses - Ending Balance:
	Individually evaluated for impairment	$	2,610		$	—		$	973		$	712		$	11		$	—		$	—		$	4,306
	Collectively evaluated for impairment	6,270			3,635			4,822			2,112			1,652			63			3,739			22,293
	Total	$	8,880		$	3,635		$	5,795		$	2,824		$	1,663		$	63		$	3,739		$	26,599
	Loans - Ending Balance:
	Individually evaluated for impairment	$	5,974		$	191		$	10,830		$	6,499		$	675		$	—		$	—		$	24,169
	Collectively evaluated for impairment	1,001,424			350,462			440,272			108,109			149,645			36,744			—			2,086,656
	Total	$	1,007,398		$	350,653		$	451,102		$	114,608		$	150,320		$	36,744		$	—		$	2,110,825
	Balance at December 31, 2012
	Allowance for Loan Losses - Ending Balance:
	Individually evaluated for impairment	$	3,446		$	339		$	3,400		$	732		$	259		$	—		$	—		$	8,176
	Collectively evaluated for impairment	6,618			3,853			7,003			4,507			1,767			31			2,375			26,154
	Total	$	10,064		$	4,192		$	10,403		$	5,239		$	2,026		$	31		$	2,375		$	34,330
	Loans - Ending Balance:
	Individually evaluated for impairment	$	8,934		$	5,772		$	16,762		$	4,695		$	2,564		$	—		$	—		$	38,727
	Collectively evaluated for impairment	953,950			327,470			469,705			156,216			142,994			16,977			—			2,067,312
	Total	$	962,884		$	333,242		$	486,467		$	160,911		$	145,558		$	16,977		$	—		$	2,106,039
	A summary of Non-covered loans individually evaluated for impairment by category at September 30, 2013, and December 31, 2012, is as follows:
		September 30, 2013
	(in thousands)	Unpaid			Recorded			Recorded			Total			Related Allowance			Average
		Contractual			Investment			Investment			Recorded Investment						Recorded Investment
		Principal Balance			With No Allowance			With
						Allowance
Commercial & Industrial	$	6,333		$	1,441		$	4,642		$	6,083		$	2,610		$	7,379
Real Estate:
Commercial - Owner Occupied	191			195			—			195			—			2,381
Commercial - Investor Owned	11,969			4,960			6,158			11,118			973			12,346
Construction and Land Development	7,206			4,278			2,389			6,667			712			5,165
Residential	700			460			227			687			11			2,361
Consumer & Other	—			—			—			—			—			—
Total	$	26,399		$	11,334		$	13,416		$	24,750		$	4,306		$	29,632
	December 31, 2012
(in thousands)	Unpaid			Recorded			Recorded			Total			Related Allowance			Average
	Contractual			Investment			Investment			Recorded Investment						Recorded Investment
	Principal Balance			With No Allowance			With
							Allowance
Commercial & Industrial	$	9,005		$	96		$	8,838		$	8,934		$	3,446		$	6,379
Real Estate:
Commercial - Owner Occupied	6,726			2,178			3,594			5,772			339			7,985
Commercial - Investor Owned	19,864			185			16,577			16,762			3,400			10,500
Construction and Land Development	6,491			1,560			3,135			4,695			732			10,259
Residential	3,132			1,626			938			2,564			259			4,368
Consumer & Other	—			—			—			—			—			—
Total	$	45,218		$	5,645		$	33,082		$	38,727		$	8,176		$	39,491
There were no loans over 90 days past due and still accruing interest at September 30, 2013. If interest on impaired loans would have been accrued based upon the original contractual terms, such income would have been $410,000 and $1.5 million for the three and nine months ended September 30, 2013, respectively. The cash amount collected and recognized as interest income on impaired loans was $4,000 and $28,000 for the three and nine months ended September 30, 2013, respectively. There was no interest income recognized on impaired loans continuing to accrue interest for the three and nine months ended September 30, 2013, respectively. At September 30, 2013, there were $1.7 million of unadvanced commitments on impaired loans. Other liabilities include approximately $241,000 for estimated losses attributable to the unadvanced commitments on impaired loans.
The recorded investment in non-accrual, restructured, and 90 days past due and still accruing interest Non-covered loans by category at September 30, 2013, and December 31, 2012, is as follows:
	September 30, 2013
(in thousands)	Non-accrual			Restructured			Loans over 90 days past due and still accruing interest			Total
Commercial & Industrial	$	6,083		$	—		$	—		$	6,083
Real Estate:
Commercial - Investor Owned	11,118			—			—			11,118
Commercial - Owner Occupied	195			—			—			195
Construction and Land Development	6,667			—			—			6,667
Residential	687			—			—			687
Consumer & Other	—			—			—			—
Total	$	24,750		$	—		$	—		$	24,750
	December 31, 2012
(in thousands)	Non-accrual			Restructured			Loans over 90 days past due and still accruing interest			Total
Commercial & Industrial	$	8,929		$	5		$	—		$	8,934
Real Estate:
Commercial - Investor Owned	16,762			—			—			16,762
Commercial - Owner Occupied	5,772			—			—			5,772
Construction and Land Development	3,260			1,435			—			4,695
Residential	2,564			—			—			2,564
Consumer & Other	—			—			—			—
Total	$	37,287		$	1,440		$	—		$	38,727
There were no Non-covered loans that have been restructured and subsequently defaulted in the nine months ended September 30, 2013.
The aging of the recorded investment in past due Non-covered loans by portfolio class and category at September 30, 2013, and December 31, 2012, is shown below.
	September 30, 2013
(in thousands)	30-89 Days			90 or More			Total			Current			Total
	Past Due			Days			Past Due
				Past Due
Commercial & Industrial	$	445		$	1,337		$	1,782		$	1,005,616		$	1,007,398
Real Estate:
Commercial - Owner Occupied	442			190			632			350,021			350,653
Commercial - Investor Owned	1,025			6,842			7,867			443,235			451,102
Construction and Land Development	—			2,210			2,210			112,398			114,608
Residential	—			320			320			150,000			150,320
Consumer & Other	3			—			3			36,741			36,744
Total	$	1,915		$	10,899		$	12,814		$	2,098,011		$	2,110,825
	December 31, 2012
(in thousands)	30-89 Days			90 or More			Total			Current			Total
	Past Due			Days			Past Due
				Past Due
Commercial & Industrial	$	14		$	—		$	14		$	962,870		$	962,884
Real Estate:
Commercial - Owner Occupied	1,352			2,081			3,433			329,809			333,242
Commercial - Investor Owned	—			4,045			4,045			482,422			486,467
Construction and Land Development	1,201			1,559			2,760			158,151			160,911
Residential	616			593			1,209			144,349			145,558
Consumer & Other	34			—			34			16,943			16,977
Total	$	3,217		$	8,278		$	11,495		$	2,094,544		$	2,106,039
The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt, such as current financial information, historical payment experience, credit documentation, and current economic factors, among other factors. This analysis is performed on a quarterly basis. The Company uses the following definitions for risk ratings:
•	Grades 1, 2, and 3- These grades include loans to borrowers with a continuous record of strong earnings, sound balance sheet condition and capitalization, ample liquidity with solid cash flow, and whose management team has experience and depth within their industry.
•	Grade 4- This grade includes loans to borrowers with positive trends in profitability, satisfactory capitalization and balance sheet condition, and sufficient liquidity and cash flow.
•	Grade 5- This grade includes loans to borrowers that may display fluctuating trends in sales, profitability, capitalization, liquidity, and cash flow.
•	Grade 6- This grade includes loans to borrowers where an adverse change or perceived weakness has occurred, but may be correctable in the near future. Alternatively, this rating category may also include circumstances where the borrower is starting to reverse a negative trend or condition, or has recently been upgraded from a 7, 8, or 9 rating.
•	Grade 7 - Watch credits are borrowers that have experienced financial setback of a nature that is not determined to be severe or influence ‘ongoing concern’ expectations. Borrowers within this category are expected to turnaround within a 12-month period of time. Although possible, no loss is anticipated, due to strong collateral and/or guarantor support.
•	Grade 8- Substandard credits will include those borrowers that are characterized by significant losses and sustained downward trends in balance sheet condition, liquidity, and cash flow. Repayment reliance may have shifted to secondary sources. Collateral exposure may exist and additional reserves may be warranted.
•	Grade 9- Doubtful credits include borrowers that may show deteriorating trends that are unlikely to be corrected. Collateral values may appear insufficient for full recovery, therefore requiring a partial charge-off, or debt renegotiation with the borrower. The borrower may have declared bankruptcy or bankruptcy is likely in the near term. All doubtful rated credits will be on non-accrual.
The recorded investment by risk category of the Non-covered loans by portfolio class and category at September 30, 2013, which is based upon the most recent analysis performed, and December 31, 2012 is as follows:
	September 30, 2013
(in thousands)	Pass (1-6)			Watch (7)			Substandard (8)			Doubtful (9)			Total
Commercial & Industrial	$	948,844		$	35,321		$	22,858		$	375		$	1,007,398
Real Estate:
Commercial - Owner Occupied	315,715			20,862			14,076			—			350,653
Commercial - Investor Owned	381,553			43,654			25,895			—			451,102
Construction and Land Development	81,799			17,385			14,951			473			114,608
Residential	135,455			7,282			7,583			—			150,320
Consumer & Other	36,740			4			—			—			36,744
Total	$	1,900,106		$	124,508		$	85,363		$	848		$	2,110,825
	December 31, 2012
(in thousands)	Pass (1-6)			Watch (7)			Substandard (8)			Doubtful (9)			Total
Commercial & Industrial	$	912,766		$	29,524		$	18,546		$	2,048		$	962,884
Real Estate:
Commercial - Owner Occupied	290,850			26,336			15,898			158			333,242
Commercial - Investor Owned	389,886			64,707			31,874			—			486,467
Construction and Land Development	124,857			9,543			26,012			499			160,911
Residential	130,159			5,921			9,478			—			145,558
Consumer & Other	16,972			5			—			—			16,977
Total	$	1,865,490		$	136,036		$	101,808		$	2,705		$	2,106,039

Portfolio_Loans_Covered_by_Los

Portfolio Loans Covered by Loss Share (Covered loans)	9 Months Ended
	Sep. 30, 2013
PORTFOLIO LOANS COVERED BY LOSS SHARE [Abstract]	'
Portfolio Loans Covered by Loss Share (Covered loans)	'
	PORTFOLIO LOANS COVERED BY LOSS SHARE ("Covered loans")
	Below is a summary of Covered loans by category at September 30, 2013, and December 31, 2012:
		September 30, 2013				December 31, 2012
	(in thousands)	Weighted-	Recorded			Weighted-	Recorded
		Average	Investment			Average	Investment
		Risk Rating	Covered Loans			Risk Rating	Covered Loans
	Real Estate Loans:
	Construction and Land Development	6.96		$15,332		7.06		$30,537
	Commercial real estate - Investor Owned	6.54	51,842			6.08	57,602
	Commercial real estate - Owner Occupied	6.87	43,252			6.65	47,140
	Residential real estate	5.95	37,446			5.68	42,531
	Total real estate loans			$147,872				$177,810
	Commercial and industrial	6.99	9,095			6.57	22,034
	Consumer & other	6.43	1,845			4.19	1,274
	Portfolio Loans			$158,812				$201,118
	The aging of the recorded investment in past due Covered loans by portfolio class and category at September 30, 2013, and December 31, 2012, is shown below.
		September 30, 2013
	(in thousands)	30-89 Days			90 or More				Total			Current			Total
		Past Due			Days				Past Due
					Past Due
	Commercial & Industrial	$	1,642		$	1,166			$	2,808		$	6,287		$	9,095
	Real Estate:
	Commercial - Owner Occupied	3,323			5,024				8,347			34,905			43,252
	Commercial - Investor Owned	1,653			4,465				6,118			45,724			51,842
	Construction and Land Development	—			3,886				3,886			11,446			15,332
	Residential	673			6,591				7,264			30,182			37,446
	Consumer & Other	—			—				—			1,845			1,845
	Total	$	7,291		$	21,132			$	28,423		$	130,389		$	158,812
		December 31, 2012
	(in thousands)	30-89 Days			90 or More				Total			Current			Total
		Past Due			Days				Past Due
					Past Due
	Commercial & Industrial	$	319		$	3,925			$	4,244		$	17,790		$	22,034
	Real Estate:
	Commercial - Owner Occupied	887			5,144				6,031			41,109			47,140
	Commercial - Investor Owned	308			665				973			56,629			57,602
	Construction and Land Development	36			13,532				13,568			16,969			30,537
	Residential	1,232			2,907				4,139			38,392			42,531
	Consumer & Other	1			2				3			1,271			1,274
	Total	$	2,783		$	26,175			$	28,958		$	172,160		$	201,118
	The following table is a rollforward of Covered loans, net of the allowance for loan losses, for the nine months ended September 30, 2013 and 2012.
	(In thousands)	Contractual Cashflows			Less:				Less: Accretable Yield			Carrying Amount
					Non-accretable Difference
	Balance January 1, 2013	$	386,966		$	118,627			$	78,768		$	189,571
	Principal reductions and interest payments	(37,421		)	—				—			(37,421		)
	Accretion of loan discount	—			—				(19,987		)	19,987
	Changes in contractual and expected cash flows due to remeasurement	9,216			(10,858		)		14,233			5,841
	Reductions due to disposals	(68,953		)	(23,867		)		(12,288		)	(32,798		)
	Balance September 30, 2013	$	289,808		$	83,902			$	60,726		$	145,180
	Balance January 1, 2012	$	618,791		$	256,481			$	63,335		$	298,975
	Principal reductions and interest payments	(68,783		)	—				—			(68,783		)
	Accretion of loan discount	—			—				(22,231		)	22,231
	Changes in contractual and expected cash flows due to remeasurement	1,671			(67,401		)		67,178			1,894
	Reductions due to disposals	(107,669		)	(50,846		)		(12,837		)	(43,986		)
	Balance September 30, 2012	$	444,010		$	138,234			$	95,445		$	210,331
	The accretable yield is accreted into interest income over the estimated life of the acquired loans using the effective
	yield method.
	A summary of activity in the FDIC loss share receivable for the nine months ended September 30, 2013 is as follows:
	(In thousands)	September 30,
		2013
	Balance at beginning of period	$	61,475
	Adjustments not reflected in income:
	Cash received from the FDIC for covered assets	(9,654		)
FDIC reimbursable losses, net	1,880
Adjustments reflected in income:
Amortization, net	(9,574		)
Loan impairment (recapture)	2,205
Reductions for payments on covered assets in excess of expected cash flows	(6,278		)
Balance at end of period	$	40,054
Due to continued favorable projections in the expected cash flows of its Covered loans, the Company continues to anticipate that it will be required to pay the FDIC at the end of one of the loss share agreements. Accordingly, a liability of $1.4 million has been recorded at September 30, 2013. As part of the remeasurement process, the Company recorded a $62,000 adjustment to increase the liability through Other noninterest expense during the quarter ended September 30, 2013. The liability will continue to be adjusted as part of the quarterly remeasurement process through the end of the loss share agreement.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	COMMITMENTS AND CONTINGENCIES
	The Company issues financial instruments with off balance sheet risk in the normal course of the business of meeting the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. These instruments may involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the consolidated balance sheets.
	The Company’s extent of involvement and maximum potential exposure to credit loss under commitments to extend credit and standby letters of credit in the event of nonperformance by the other party to the financial instrument is represented by the contractual amount of these instruments.
	The Company uses the same credit policies in making commitments and conditional obligations as it does for financial instruments included on its consolidated balance sheets. At September 30, 2013, there were $1.7 million of unadvanced commitments on impaired loans compared to $775,000 at December 31, 2012. Other liabilities include approximately $241,000 and $124,000 at September 30, 2013 and December 31, 2012 for estimated losses attributable to the unadvanced commitments on impaired loans.
	The contractual amounts of off-balance-sheet financial instruments as of September 30, 2013, and December 31, 2012, are as follows:
	(in thousands)	September 30,		December 31,
		2013		2012
	Commitments to extend credit	$	769,704	$	722,325
	Standby letters of credit	43,452		42,561
	Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments usually have fixed expiration dates or other termination clauses, may have significant usage restrictions, and may require payment of a fee. Of the total commitments to extend credit at September 30, 2013, and December 31, 2012, approximately $38.6 million and $50.7 million, respectively, represent fixed rate loan commitments. Since certain of the commitments may expire without being drawn upon or may be revoked, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the borrower. The type of collateral held varies, but may include accounts receivable, inventory, premises and equipment, and real estate.
	Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. These standby letters of credit are issued to support contractual obligations of the Company’s customers. The credit risk involved in issuing letters of credit is essentially the same as the risk involved in extending loans to customers. The approximate remaining terms of standby letters of credit range from 6 months to 5 years at September 30, 2013.
	Contingencies
	The Company and its subsidiaries are, from time to time, parties to various legal proceedings arising out of their businesses. Although we are not able to predict the outcome of such actions, management believes that there are no such proceedings pending or threatened against the Company or its subsidiaries which, if determined adversely, would have a material adverse effect on the business, consolidated financial condition, results of operations or cash flows of the Company or any of its subsidiaries.
	Distinctive Notes
	The Bank, along with other co-defendants, had been named as a defendant in lawsuits filed by persons alleging to be clients of the Bank’s Trust division who invested in promissory notes (the "Distinctive Notes") issued by Distinctive Properties (UK) Limited (“Distinctive Properties”), a company involved in the purchase and development of real estate in the United Kingdom.
	Rosemann, et al. v. Martin Sigillito, et al.
	In a lawsuit filed in United States District Court for the Eastern District of Missouri, the plaintiffs alleged that the investments in the Distinctive Notes were part of a multi-million dollar Ponzi scheme. Plaintiffs alleged to hold such promissory notes in accounts with the Trust division and that, among other things, the Bank was negligent and breached its contracts. Plaintiffs also alleged that the Bank violated the Racketeer Influenced and Corrupt Organizations Act (“RICO”). Plaintiffs, in the aggregate, were seeking damages from defendants, including the Bank, in excess of $44.0 million as well as their costs and attorneys’ fees and trebled damages under RICO.
	The case was stayed while criminal proceedings against Sigillito were completed. After a four week trial, Sigillito was found guilty of 20 counts of wire fraud, mail fraud, conspiracy, and money laundering. Following the verdict, the judge lifted the stay and set the case for a four week jury trial starting August 26, 2013. Discovery concluded on April 16, 2013 and dispositive motions were filed. On July 9, 2013 the judge dismissed all counts related to RICO, as well as the Company's negligence. The Court denied the plaintiffs' motion to reconsider the dismissal. The claims that remained pending against the Company were the breach of contract claims asserted by 41 plaintiffs who held IRA accounts with the Company. On September 24, 2013, the Company reached a confidential settlement with the Plaintiffs. The settlement did not have a material impact on the Company's financial statements.

Derivative_Financial_Instrumen

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	DERIVATIVE FINANCIAL INSTRUMENTS
	The Company is a party to various derivative financial instruments that are used in the normal course of business to meet the needs of its clients and as part of its risk management activities. These instruments include interest rate swaps and option contracts and foreign exchange forward contracts. The Company does not enter into derivative financial instruments for trading or speculative purposes.
	Interest rate swap contracts involve the exchange of fixed and floating rate interest payment obligations without the exchange of the underlying principal amounts. The Company enters into interest rate swap contracts on behalf of its clients and also utilizes such contracts to reduce or eliminate the exposure to changes in the cash flows or fair value of hedged assets or liabilities due to changes in interest rates. Interest rate option contracts consist of caps and provide for the transfer or reduction of interest rate risk in exchange for a fee. Foreign exchange forward contracts are agreements between two parties to exchange a specified amount of one currency for another currency at a specified foreign exchange rate on a future date. The Company enters into foreign exchange forward contracts with its clients and enters into an offsetting foreign exchange contract with established financial institution counterparties.
	All derivative financial instruments, whether designated as hedges or not, are recorded on the consolidated balance sheet at fair value within Other assets or Other liabilities. The accounting for changes in the fair value of a derivative in the consolidated statement of operations depends on whether the contract has been designated as a hedge and qualifies for hedge accounting. At September 30, 2013, and December 31, 2012, the Company did not have any derivatives designated as cash flow or fair value hedges.
	Using derivative instruments means assuming counterparty credit risk. Counterparty credit risk relates to the loss the Company could incur if a counterparty were to default on a derivative contract. Notional amounts of derivative financial instruments do not represent credit risk, and are not recorded in the consolidated balance sheet. They are used merely to express the volume of this activity. The overall credit risk and exposure to individual counterparties is monitored. The Company does not anticipate nonperformance by any counterparties. The amount of counterparty credit exposure is the unrealized gains, if any, on such derivative contracts along with the value of foreign exchange forward contracts. At September 30, 2013 and December 31, 2012, the Company had $1.1 million and $1.7 million of counterparty credit exposure on derivatives, respectively. At September 30, 2013, and December 31, 2012, the Company had pledged cash of $730,000 and $3.3 million, respectively, as collateral in connection with our interest rate swap agreements.
	Risk Management Instruments. The Company enters into certain derivative contracts to economically hedge state tax credits and certain loans.
	•	Economic hedge of state tax credits. In November 2008, the Company paid $2.1 million to enter into a series of interest rate caps in order to economically hedge changes in fair value of the state tax credits held for sale. In February 2010, the Company paid $751,000 for an additional series of interest rate caps. See Note 8—Fair Value Measurements for further discussion of the fair value of the state tax credits.
	The table below summarizes the notional amounts and fair values of the derivative instruments used to manage risk.
										Asset Derivatives								Liability Derivatives
										(Other Assets)								(Other Liabilities)
		Notional Amount								Fair Value								Fair Value
	(in thousands)	September 30,				December 31,				September 30,				December 31,				September 30,		December 31,
		2013				2012				2013				2012				2013		2012
	Non-designated hedging instruments
	Interest rate cap contracts	$	34,050			$	49,050			$	14			$	13			$	—	$	—
	The following table shows the location and amount of gains and losses related to derivatives used for risk management purposes that were recorded in the condensed consolidated statements of operations for the three and nine months ended September 30, 2013 and 2012.
		Location of Gain or (Loss) Recognized in Operations on Derivative		Amount of Gain or (Loss) Recognized in Operations on Derivative								Amount of Gain or (Loss) Recognized in Operations on Derivative
				Three months ended September 30,								Nine months ended September 30,
	(in thousands)			2013				2012				2013				2012
	Non-designated hedging instruments
	Interest rate cap contracts	Gain on state tax credits, net		$	(9	)		$	(14	)		$	1			$	(79	)
	Client-Related Derivative Instruments. As an accommodation to certain customers, the Company enters into interest rate swaps to economically hedge changes in fair value of certain loans. The table below summarizes the notional amounts and fair values of the client-related derivative instruments.
										Asset Derivatives								Liability Derivatives
										(Other Assets)								(Other Liabilities)
		Notional Amount								Fair Value								Fair Value
	(in thousands)	September 30,				December 31,				September 30,				December 31,				September 30,		December 31,
		2013				2012				2013				2012				2013		2012
	Non-designated hedging instruments
	Interest rate swap contracts	$	139,223			$	126,962			$	1,114			$	1,741			$	1,114	$	1,979
	Changes in the fair value of client-related derivative instruments are recognized currently in operations. The following table shows the location and amount of gains and losses recorded in the condensed consolidated statements of operations for the three and nine months ended September 30, 2013 and 2012.
		Location of Gain or (Loss) Recognized in Operations on Derivative		Amount of Gain or (Loss) Recognized in Operations on Derivative								Amount of Gain or (Loss) Recognized in Operations on Derivative
				Three months ended September 30,								Nine months ended September 30,
	(in thousands)			2013				2012				2013				2012
	Non-designated hedging instruments
	Interest rate swap contracts	Interest and fees on loans		$	(32	)		$	(103	)		$	(205	)		$	(354	)

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	FAIR VALUE MEASUREMENTS
	Below is a description of certain assets and liabilities measured at fair value.
	The following table summarizes financial instruments measured at fair value on a recurring basis as of September 30, 2013, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value.
		September 30, 2013
	(in thousands)	Quoted Prices in		Significant			Significant			Total Fair
		Active Markets		Other			Unobservable			Value
		for Identical Assets		Observable Inputs			Inputs
		(Level 1)		(Level 2)			(Level 3)
	Assets
	Securities available for sale
	Obligations of U.S. Government-sponsored enterprises	$	—	$	93,974		$	—		$	93,974
	Obligations of states and political subdivisions	—		48,151			3,042			51,193
	Residential mortgage-backed securities	—		307,879			—			307,879
	Total securities available for sale	$	—	$	450,004		$	3,042		$	453,046
	State tax credits held for sale	—		—			20,139			20,139
	Derivative financial instruments	—		1,128			—			1,128
	Total assets	$	—	$	451,132		$	23,181		$	474,313
	Liabilities
	Derivative financial instruments	$	—	$	1,114		$	—		$	1,114
	Total liabilities	$	—	$	1,114		$	—		$	1,114
	•	Securities available for sale. Securities classified as available for sale are reported at fair value utilizing Level 2 and Level 3 inputs. The Company obtains fair value measurements from an independent pricing service. Fair values for Level 2 securities are based upon dealer quotes, market spreads, the U.S. Treasury yield curve, trade execution data, market consensus prepayment speeds, credit information and the bond's terms and conditions at the security level. At September 30, 2013, Level 3 securities available for sale consist primarily of three Auction Rate Securities that are valued based on the securities' estimated cash flows, yields of comparable securities, and live trading levels.
	•	Portfolio Loans. Certain fixed rate portfolio loans are accounted for as trading instruments and reported at fair value. Fair value on these loans is determined using a third party valuation model with observable Level 2 market data inputs.
	•	State tax credits held for sale. At September 30, 2013, of the $55.8 million of state tax credits held for sale on the condensed consolidated balance sheet, approximately $20.1 million were carried at fair value. The remaining $35.7 million of state tax credits were accounted for at cost.
	The Company is not aware of an active market that exists for the 10-year streams of state tax credit financial instruments. However, the Company’s principal market for these tax credits consists of Missouri state residents who buy these credits and from local and regional accounting firms who broker them. As such, the Company employed a discounted cash flow analysis (income approach) to determine the fair value.
	The fair value measurement is calculated using an internal valuation model with observable market data including discounted cash flows based upon the terms and conditions of the tax credits. If the underlying project remains in compliance with the various federal and state rules governing the tax credit program, each project will generate about 10 years of tax credits. The inputs to the discounted cash flow calculation include: the amount of tax credits generated each year, the anticipated sale price of the tax credit, the timing of the sale and a discount rate. The discount rate is estimated using the LIBOR swap curve at a point equal to the remaining life in years of credits plus a 205 basis point spread. With the exception of the discount rate, the other inputs to the fair value calculation are observable and readily available. The discount rate is considered a Level 3 input because it is an “unobservable input” and is based on the Company’s assumptions. An increase in the discount rate utilized would generally result in a lower estimated fair value of the tax credits. Alternatively, a decrease in the discount rate utilized would generally result in a higher estimated fair value of the tax credits. Given the significance of this input to the fair value calculation, the state tax credit assets are reported as Level 3 assets.
	•	Derivatives. Derivatives are reported at fair value utilizing Level 2 inputs. The Company obtains counterparty quotations to value its interest rate swaps and caps. In addition, the Company validates the counterparty quotations with third party valuation sources. Derivatives with negative fair values are included in Other liabilities in the consolidated balance sheets. Derivatives with positive fair value are included in Other assets in the consolidated balance sheets.
	Level 3 financial instruments
	The following table presents the changes in Level 3 financial instruments measured at fair value on a recurring basis for the periods ended September 30, 2013 and 2012, respectively.
	•	Purchases, sales, issuances and settlements, net. There were no Level 3 purchases during the quarter ended September 30, 2013 or 2012.
	•	Transfers in and/or out of Level 3. The transfer out of Level 3 during the period ended March 31, 2012 was related to a mortgage-backed security purchased in the fourth quarter of 2011 which was originally priced using Level 3 assumptions. In the first quarter of 2012, a third party pricing service, utilizing Level 2 assumptions, became available as more data was available on the new security.
		Securities available for sale, at fair value
		Three months ended September 30,					Nine months ended September 30,
	(in thousands)	2013		2012			2013			2012
	Beginning balance	$	3,039	$	3,042		$	3,049		$	6,763
	Total (losses) gains:
	Included in other comprehensive income	3		5			(7		)	20
	Purchases, sales, issuances and settlements:
	Purchases	—		—			—			—
	Transfer in and/or out of Level 3	—		—			—			(3,736		)
	Ending balance	$	3,042	$	3,047		$	3,042		$	3,047
	Change in unrealized (losses) gains relating to	$	3	$	5		$	(7	)	$	20
	assets still held at the reporting date
		State tax credits held for sale
		Three months ended September 30,					Nine months ended September 30,
	(in thousands)	2013		2012			2013			2012
	Beginning balance	$	19,822	$	24,836		$	23,020		$	26,350
	Total gains:
	Included in earnings	317		264			422			994
	Purchases, sales, issuances and settlements:
	Sales	—		(31		)	(3,303		)	(2,275		)
	Ending balance	$	20,139	$	25,069		$	20,139		$	25,069
	Change in unrealized gains relating to	$	317	$	257		$	(456	)	$	439
	assets still held at the reporting date
	From time to time, the Company measures certain assets at fair value on a nonrecurring basis. These include assets that are measured at the lower of cost or fair value that were recognized at fair value below cost at the end of the period. The following table presents financial instruments and non-financial assets measured at fair value on a non-recurring basis as of September 30, 2013:
		-1		-1			-1			-1
	(in thousands)	Total Fair Value		Quoted Prices in Active			Significant			Significant			Total (losses)			Total (losses)
				Markets for			Other			Unobservable			gains for the three			gains for the nine months ended
				Identical			Observable			Inputs			months ended			30-Sep-13
				Assets			Inputs			(Level 3)			30-Sep-13
				(Level 1)			(Level 2)
	Impaired loans	$	3,172	$	—		$	—		$	3,172		$	(2,514	)	$	(8,046	)
	Other real estate	7,528		—			—			7,528			(207		)	(961		)
	Total	$	10,700	$	—		$	—		$	10,700		$	(2,721	)	$	(9,007	)
(1) The amounts represent only balances measured at fair value during the period and still held as of the reporting date.
Impaired loans are reported at the fair value of the underlying collateral or by determining the net present value of future cash flows. Fair values for collateral dependent impaired loans are obtained from current appraisals by qualified licensed appraisers or independent valuation specialists. Fair values of impaired loans that are not collateral dependent are determined by using a discounted cash flow model to determine the net present value of future cash flows. Other real estate owned is adjusted to fair value upon foreclosure of the loan collateral. Subsequently, foreclosed assets are carried at the lower of carrying value or fair value less costs to sell. Fair value of other real estate is based upon the current appraised values of the properties as determined by qualified licensed appraisers and the Company’s judgment of other relevant market conditions.
Following is a summary of the carrying amounts and fair values of the Company’s financial instruments on the consolidated balance sheets at September 30, 2013, and December 31, 2012.
	September 30, 2013					December 31, 2012
(in thousands)	Carrying Amount		Estimated fair value			Carrying Amount			Estimated fair value
Balance sheet assets
Cash and due from banks	$	35,238	$	35,238		$	21,906		$	21,906
Federal funds sold	111		111			51			51
Interest-bearing deposits	71,191		71,191			95,413			95,413
Securities available for sale	453,046		453,046			640,212			640,212
Other investments, at cost	15,485		15,485			14,294			14,294
Loans held for sale	12,967		12,967			11,792			11,792
Derivative financial instruments	1,128		1,128			1,754			1,754
Portfolio loans, net	2,229,406		2,229,411			2,261,280			2,267,038
State tax credits, held for sale	55,810		60,937			61,284			66,822
Accrued interest receivable	7,897		7,897			8,497			8,497
Balance sheet liabilities
Deposits	2,447,917		2,453,970			2,658,851			2,669,113
Subordinated debentures	63,081		40,474			85,081			65,840
Federal Home Loan Bank advances	120,000		126,234			80,000			89,301
Other borrowings	178,165		178,228			245,070			245,224
Derivative financial instruments	1,114		1,114			1,979			1,979
Accrued interest payable	885		885			1,282			1,282
For information regarding the methods and assumptions used to estimate the fair value of each class of financial instruments for which it is practical to estimate such value, refer to Note 20–Fair Value Measurements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012.
The following table presents the level in the fair value hierarchy for the estimated fair values of only the Company’s financial instruments that are not already presented on the condensed consolidated balance sheets at fair value at September 30, 2013, and December 31, 2012:
	Estimated Fair Value Measurement at Reporting Date Using								Balance at
(in thousands)	Level 1		Level 2			Level 3			30-Sep-13
Financial Assets:
Portfolio loans, net	$	—	$	—		$	2,229,411		$	2,229,411
State tax credits, held for sale	$	—	$	—		$	40,798		$	40,798
Financial Liabilities:
Deposits	1,825,274		—			628,696			2,453,970
Subordinated debentures	—		40,474			—			40,474
Federal Home Loan Bank advances	—		126,234			—			126,234
Other borrowings	—		178,228			—			178,228
	Estimated Fair Value Measurement at Reporting Date Using								Balance at
(in thousands)	Level 1		Level 2			Level 3			31-Dec-12
Financial Assets:
Portfolio loans, net	$	—	$	—		$	2,266,834		$	2,266,834
State tax credits, held for sale	$	—	$	—		$	43,802		$	43,802
Financial Liabilities:
Deposits	2,079,141		—			589,972			2,669,113
Subordinated debentures	—		65,840			—			65,840
Federal Home Loan Bank advances	—		89,301			—			89,301
Other borrowings	—		245,224			—			245,224

Segment_Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Segment Reporting	'
	SEGMENT REPORTING
	The Company has two primary operating segments, Banking and Wealth Management, which are delineated by the products and services that each segment offers. The segments are evaluated separately on their individual performance, as well as their contribution to the Company as a whole.
	The Banking operating segment consists of a full-service commercial bank, with locations in St. Louis, Kansas City, and Phoenix. The majority of the Company’s assets and income result from the Banking segment. All banking locations have the same product and service offerings, have similar types and classes of customers and utilize similar service delivery methods. Pricing guidelines and operating policies for products and services are the same across all regions.
	The Banking operating segment also includes activities surrounding the assets acquired under FDIC loss share agreements.
	The Wealth Management operating segment includes the Trust division of the Bank and the state tax credit brokerage activities. The Trust division provides estate planning, investment management, and retirement planning as well as strategic planning and management succession issues. State tax credits are part of a fee initiative designed to augment the Company’s Wealth Management segment and Banking lines of business.
	The Company's Corporate and Intercompany activities represent the elimination of items between segments as well as Corporate related items that management feels are not allocable to either of the two respective segments.
	The financial information for each business segment reflects that information which is specifically identifiable or which is allocated based on an internal allocation method. There were no material intersegment revenues among the two segments. Management periodically makes changes to methods of assigning costs and income to its business segments to better reflect operating results. When appropriate, these changes are reflected in prior year information presented below.
	Following are the financial results for the Company’s operating segments.
	(in thousands)	Banking			Wealth Management			Corporate and Intercompany			Total
		Three months ended September 30,
	Income Statement Information	2013
	Net interest income (expense)	$	33,476		$	(166	)	$	(736	)	$	32,574
	Provision for loan losses	2,159			—			—			2,159
	Noninterest income	1,684			2,006			26			3,716
	Noninterest expense	17,898			1,809			1,533			21,240
	Income (loss) before income tax expense (benefit)	15,103			31			(2,243		)	12,891
		2012
	Net interest income (expense)	$	38,627		$	(252	)	$	(891	)	$	37,484
	Provision for loan losses	11,937			—			—			11,937
	Noninterest income	5,418			2,088			326			7,832
	Noninterest expense	18,063			1,968			1,251			21,282
	Income (loss) before income tax expense (benefit)	14,045			(132		)	(1,816		)	12,097
		Nine months ended September 30,
	Income Statement Information	2013
	Net interest income (expense)	$	105,738		$	(292	)	$	(2,665	)	$	102,781
	Provision for loan losses	(305		)	—			—			(305		)
	Noninterest income	(1,758		)	6,611			100			4,953
	Noninterest expense	53,137			5,644			4,355			63,136
	Income (loss) before income tax expense (benefit)	51,148			675			(6,920		)	44,903
		2012
	Net interest income (expense)	$	105,646		$	(566	)	$	(2,834	)	$	102,246
	Provision for loan losses	16,221			—			—			16,221
	Noninterest income	5,571			6,718			371			12,660
	Noninterest expense	54,424			5,761			3,875			64,060
	Income (loss) before income tax expense (benefit)	40,572			391			(6,338		)	34,625
	Balance Sheet Information	September 30, 2013						31-Dec-12
	Total assets:
	Banking	$	2,994,008					$	3,195,096
	Wealth Management	96,943						112,020
	Corporate and Intercompany	17,111						18,670
	Total	3,108,062						3,325,786

Branch_Sale

Branch Sale	9 Months Ended
	Sep. 30, 2013
Branch Sale [Abstract]	'
Branch Sale	'
	BRANCH SALE
	On July 3, 2013 the Company entered into an agreement to sell two of its Kansas City branches to another financial institution. The agreement calls for the sale of substantially all of the deposits at these branches, as well as specified loans and other assets. The Company expects to record a gain upon completion of the transaction primarily attributed to a premium on the deposits that will be sold. Regulatory approval for the transaction occurred in the third quarter of 2013 and the sale is expected to be completed in the fourth quarter of 2013.
	The following table summarizes the primary balance sheet amounts relative to the branches to be sold:
	(in thousands)
	Assets
	Cash and cash equivalents	$	805
	Loans	7,696
	Other assets	1,206
	Liabilities
	Deposits	$	81,298

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Marketable Securities, Available-for-sale Securities, Policy [Policy Text Block]	'
	Management systematically evaluates investment securities for other-than-temporary declines in fair value on a quarterly basis. This analysis requires management to consider various factors, which include (1) the present value of the cash flows expected to be collected compared to the amortized cost of the security, (2) duration and magnitude of the decline in value, (3) the financial condition of the issuer or issuers, (4) structure of the security and (5) the intent to sell the security or whether it is more likely than not that the Company would be required to sell the security before its anticipated recovery in market value.
Derivatives, Policy [Policy Text Block]	'
	All derivative financial instruments, whether designated as hedges or not, are recorded on the consolidated balance sheet at fair value within Other assets or Other liabilities. The accounting for changes in the fair value of a derivative in the consolidated statement of operations depends on whether the contract has been designated as a hedge and qualifies for hedge accounting.
Basis of Accounitng and Consolidation, Policy	'
	Basis of Financial Statement Presentation
	The condensed consolidated financial statements of the Company and its subsidiaries have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. They do not include all information and footnotes required by U.S. GAAP for annual financial statements. The condensed consolidated financial statements include the accounts of the Company and its subsidiaries, all of which are wholly owned. All intercompany accounts and transactions have been eliminated. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included.
	The Company has adopted the new accounting guidance surrounding comprehensive income by presenting a separate Statement of Comprehensive Income. The Statement of Comprehensive Income includes the amount and the related tax impact that have been reclassified from accumulated other comprehensive income to net income. The reclassification adjustment for unrealized gain on sale of securities included in net income has been recorded through the gain on sale of investment securities line item, within noninterest income, in the Company's Condensed Consolidated Statements of Operations.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Summary of Per Common Share Data and Amounts	'
	The following table presents a summary of per common share data and amounts for the periods indicated.
		Three months ended September 30,					Nine months ended September 30,
	(in thousands, except per share data)	2013		2012			2013		2012
	Net income as reported	$	8,410	$	7,930		$	29,483	$	22,881
	Preferred stock dividend	—		(436		)	—		(1,312		)
	Accretion of preferred stock discount	—		(212		)	—		(621		)
	Net income available to common shareholders	$	8,410	$	7,282		$	29,483	$	20,948
	Impact of assumed conversions
	Interest on 9% convertible trust preferred securities, net of income tax	217		371			926		1,113
	Net income available to common shareholders and assumed conversions	$	8,627	$	7,653		$	30,409	$	22,061
	Weighted average common shares outstanding	18,779		17,876			18,288		17,829
	Incremental shares from assumed conversions of convertible trust preferred securities	851		1,439			1,241		1,439
	Additional dilutive common stock equivalents	200		100			153		34
	Weighted average diluted common shares outstanding	19,830		19,415			19,682		19,302
	Basic earnings per common share:	$	0.45	$	0.41		$	1.61	$	1.17
	Diluted earnings per common share:	$	0.44	$	0.39		$	1.55	$	1.14

Investments_Tables

Investments (Tables)	9 Months Ended
	Sep. 30, 2013
Investments [Abstract]	'
Schedule of Available-for-sale Securities Reconciliation	'
	The following table presents the amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale:
		September 30, 2013
	(in thousands)	Amortized Cost		Gross		Gross			Fair Value
				Unrealized Gains		Unrealized Losses
	Available for sale securities:
	Obligations of U.S. Government-sponsored enterprises	$	93,680	$	599	$	(305	)	$	93,974
	Obligations of states and political subdivisions	51,702		1,079		(1,588		)	51,193
	Residential mortgage-backed securities	310,907		3,127		(6,155		)	307,879
		$	456,289	$	4,805	$	(8,048	)	$	453,046
		December 31, 2012
	(in thousands)	Amortized Cost		Gross		Gross			Fair Value
				Unrealized Gains		Unrealized Losses
	Available for sale securities:
	Obligations of U.S. Government-sponsored enterprises	$	149,039	$	3,329	$	—		$	152,368
	Obligations of states and political subdivisions	51,202		2,279		(478		)	53,003
	Residential mortgage-backed securities	427,221		7,884		(264		)	434,841
		$	627,462	$	13,492	$	(742	)	$	640,212
Investments Classified by Contractual Maturity Date	'
	The amortized cost and estimated fair value of debt securities classified as available for sale at September 30, 2013, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. The weighted average life of the mortgage-backed securities is approximately 5 years.
	(in thousands)	Amortized Cost		Estimated Fair Value
	Due in one year or less	$	885	$	892
	Due after one year through five years	107,062		107,703
	Due after five years through ten years	23,333		23,516
	Due after ten years	14,102		13,056
	Mortgage-backed securities	310,907		307,879
		$	456,289	$	453,046
Schedule of Unrealized Loss on Investments	'
	The following table represents a summary of available-for-sale investment securities that had an unrealized loss:
		September 30, 2013
		Less than 12 months				12 months or more						Total
	(in thousands)	Fair Value		Unrealized Losses		Fair Value			Unrealized Losses			Fair Value		Unrealized Losses
	Obligations of U.S. Government-sponsored enterprises	$	30,355	$	305	$	—		$	—		$	30,355	$	305
	Obligations of states and political subdivisions	$	20,306	$	1,230	$	3,042		$	358		$	23,348	$	1,588
	Residential mortgage-backed securities	188,849		5,692		8,779			463			197,628		6,155
		$	239,510	$	7,227	$	11,821		$	821		$	251,331	$	8,048
		December 31, 2012
		Less than 12 months				12 months or more						Total
	(in thousands)	Fair Value		Unrealized Losses		Fair Value			Unrealized Losses			Fair Value		Unrealized Losses
	Obligations of states and political subdivisions	6,434		122		3,389			356			9,823		478
	Residential mortgage-backed securities	40,471		143		11,266			121			51,737		264
		$	46,905	$	265	$	14,655		$	477		$	61,560	$	742
Schedule of Realized Gain (Loss)	'
	The gross gains and gross losses realized from sales of available-for-sale investment securities were as follows:
		Three months ended September 30,				Nine months ended September 30,
	(in thousands)	2013		2012		2013			2012
	Gross gains realized	$	611	$	—	$	1,477		$	1,399
	Gross losses realized	—		—		(182		)	(243		)
	Proceeds from sales	36,710		—		159,604			110,876

Portfolio_Loans_Not_Covered_by1

Portfolio Loans Not Covered by Loss Share ("Non-covered") (Tables) (Non-Covered Loans)	9 Months Ended
	Sep. 30, 2013
Non-Covered Loans	'
Non-covered Loans [Line Items]	'
Summary of Non-covered Loans by Category	'
	Below is a summary of Non-covered loans by category at September 30, 2013, and December 31, 2012:
	(in thousands)	September 30, 2013			December 31, 2012
	Real Estate Loans:
	Construction and Land Development	$	114,608		$	160,911
	Commercial real estate - Investor Owned	451,102			486,467
	Commercial real estate - Owner Occupied	350,653			333,242
	Residential real estate	150,320			145,558
	Total real estate loans	$	1,066,683		$	1,126,178
	Commercial and industrial	1,007,398			962,884
	Consumer & other	35,862			16,966
	Portfolio Loans	$	2,109,943		$	2,106,028
	Unearned loan costs, net	882			11
	Portfolio loans, including unearned loan costs	$	2,110,825		$	2,106,039
Summary of Allowance for Loan Losses for Non-covered Loans by Portfolio Class and Category	'
	A summary of the year-to-date activity in the allowance for loan losses and the recorded investment in Non-covered loans by portfolio class and category based on impairment method through September 30, 2013, and at December 31, 2012, is as follows:
	(in thousands)	Commercial & Industrial			Commercial			Commercial			Construction and Land Development			Residential Real Estate			Consumer & Other			Qualitative Adjustment			Total
					Real Estate			Real Estate
					Owner Occupied			Investor Owned
	Allowance for Loan Losses:
	Balance at	$	10,064		$	4,192		$	10,403		$	5,239		$	2,026		$	31		$	2,375		$	34,330
	31-Dec-12
	Provision charged to expense	120			179			953			(127		)	675			46			7			1,853
	Losses charged off	(206		)	(312		)	(3,052		)	(190		)	(986		)	(34		)	—			(4,780		)
	Recoveries	298			5			336			14			396			—			—			1,049
	Balance at	$	10,276		$	4,064		$	8,640		$	4,936		$	2,111		$	43		$	2,382		$	32,452
	31-Mar-13
	Provision charged to expense	(320		)	(139		)	(2,273		)	(998		)	(299		)	1			(267		)	(4,295		)
	Losses charged off	(400		)	(32		)	(176		)	(144		)	—			—			—			(752		)
	Recoveries	118			17			24			21			34			—			—			214
	Balance at	$	9,674		$	3,910		$	6,215		$	3,815		$	1,846		$	44		$	2,115		$	27,619
	30-Jun-13
	Provision charged to expense	117			(233		)	(276		)	(1,291		)	(612		)	19			1,624			(652		)
	Losses charged off	(1,817		)	(56		)	(504		)	(85		)	(52		)	—			—			(2,514		)
	Recoveries	906			14			360			385			481			—			—			2,146
	Balance at	$	8,880		$	3,635		$	5,795		$	2,824		$	1,663		$	63		$	3,739		$	26,599
	30-Sep-13
	(in thousands)	Commercial & Industrial			Commercial			Commercial			Construction and Land Development			Residential Real Estate			Consumer & Other			Qualitative Adjustment			Total
					Real Estate			Real Estate
					Owner Occupied			Investor Owned
	Balance September 30, 2013
	Allowance for Loan Losses - Ending Balance:
	Individually evaluated for impairment	$	2,610		$	—		$	973		$	712		$	11		$	—		$	—		$	4,306
	Collectively evaluated for impairment	6,270			3,635			4,822			2,112			1,652			63			3,739			22,293
	Total	$	8,880		$	3,635		$	5,795		$	2,824		$	1,663		$	63		$	3,739		$	26,599
	Loans - Ending Balance:
	Individually evaluated for impairment	$	5,974		$	191		$	10,830		$	6,499		$	675		$	—		$	—		$	24,169
	Collectively evaluated for impairment	1,001,424			350,462			440,272			108,109			149,645			36,744			—			2,086,656
	Total	$	1,007,398		$	350,653		$	451,102		$	114,608		$	150,320		$	36,744		$	—		$	2,110,825
	Balance at December 31, 2012
	Allowance for Loan Losses - Ending Balance:
	Individually evaluated for impairment	$	3,446		$	339		$	3,400		$	732		$	259		$	—		$	—		$	8,176
	Collectively evaluated for impairment	6,618			3,853			7,003			4,507			1,767			31			2,375			26,154
	Total	$	10,064		$	4,192		$	10,403		$	5,239		$	2,026		$	31		$	2,375		$	34,330
	Loans - Ending Balance:
	Individually evaluated for impairment	$	8,934		$	5,772		$	16,762		$	4,695		$	2,564		$	—		$	—		$	38,727
	Collectively evaluated for impairment	953,950			327,470			469,705			156,216			142,994			16,977			—			2,067,312
	Total	$	962,884		$	333,242		$	486,467		$	160,911		$	145,558		$	16,977		$	—		$	2,106,039
Summary of Non-covered Loans Individually Evaluated for Impairment by Category	'
	A summary of Non-covered loans individually evaluated for impairment by category at September 30, 2013, and December 31, 2012, is as follows:
		September 30, 2013
	(in thousands)	Unpaid			Recorded			Recorded			Total			Related Allowance			Average
		Contractual			Investment			Investment			Recorded Investment						Recorded Investment
		Principal Balance			With No Allowance			With
								Allowance
	Commercial & Industrial	$	6,333		$	1,441		$	4,642		$	6,083		$	2,610		$	7,379
	Real Estate:
	Commercial - Owner Occupied	191			195			—			195			—			2,381
	Commercial - Investor Owned	11,969			4,960			6,158			11,118			973			12,346
	Construction and Land Development	7,206			4,278			2,389			6,667			712			5,165
	Residential	700			460			227			687			11			2,361
	Consumer & Other	—			—			—			—			—			—
	Total	$	26,399		$	11,334		$	13,416		$	24,750		$	4,306		$	29,632
		December 31, 2012
	(in thousands)	Unpaid			Recorded			Recorded			Total			Related Allowance			Average
		Contractual			Investment			Investment			Recorded Investment						Recorded Investment
		Principal Balance			With No Allowance			With
								Allowance
	Commercial & Industrial	$	9,005		$	96		$	8,838		$	8,934		$	3,446		$	6,379
	Real Estate:
	Commercial - Owner Occupied	6,726			2,178			3,594			5,772			339			7,985
	Commercial - Investor Owned	19,864			185			16,577			16,762			3,400			10,500
	Construction and Land Development	6,491			1,560			3,135			4,695			732			10,259
	Residential	3,132			1,626			938			2,564			259			4,368
	Consumer & Other	—			—			—			—			—			—
	Total	$	45,218		$	5,645		$	33,082		$	38,727		$	8,176		$	39,491
	The recorded investment in non-accrual, restructured, and 90 days past due and still accruing interest Non-covered loans by category at September 30, 2013, and December 31, 2012, is as follows:
		September 30, 2013
	(in thousands)	Non-accrual			Restructured			Loans over 90 days past due and still accruing interest			Total
	Commercial & Industrial	$	6,083		$	—		$	—		$	6,083
	Real Estate:
	Commercial - Investor Owned	11,118			—			—			11,118
	Commercial - Owner Occupied	195			—			—			195
	Construction and Land Development	6,667			—			—			6,667
	Residential	687			—			—			687
	Consumer & Other	—			—			—			—
	Total	$	24,750		$	—		$	—		$	24,750
		December 31, 2012
	(in thousands)	Non-accrual			Restructured			Loans over 90 days past due and still accruing interest			Total
	Commercial & Industrial	$	8,929		$	5		$	—		$	8,934
	Real Estate:
	Commercial - Investor Owned	16,762			—			—			16,762
	Commercial - Owner Occupied	5,772			—			—			5,772
	Construction and Land Development	3,260			1,435			—			4,695
	Residential	2,564			—			—			2,564
	Consumer & Other	—			—			—			—
	Total	$	37,287		$	1,440		$	—		$	38,727
Summary of Aging of Recorded Investment in Past Due Non-covered Loans by Portfolio Class and Category	'
	The aging of the recorded investment in past due Non-covered loans by portfolio class and category at September 30, 2013, and December 31, 2012, is shown below.
		September 30, 2013
	(in thousands)	30-89 Days			90 or More			Total			Current			Total
		Past Due			Days			Past Due
					Past Due
	Commercial & Industrial	$	445		$	1,337		$	1,782		$	1,005,616		$	1,007,398
	Real Estate:
	Commercial - Owner Occupied	442			190			632			350,021			350,653
	Commercial - Investor Owned	1,025			6,842			7,867			443,235			451,102
	Construction and Land Development	—			2,210			2,210			112,398			114,608
	Residential	—			320			320			150,000			150,320
	Consumer & Other	3			—			3			36,741			36,744
	Total	$	1,915		$	10,899		$	12,814		$	2,098,011		$	2,110,825
		December 31, 2012
	(in thousands)	30-89 Days			90 or More			Total			Current			Total
		Past Due			Days			Past Due
					Past Due
	Commercial & Industrial	$	14		$	—		$	14		$	962,870		$	962,884
	Real Estate:
	Commercial - Owner Occupied	1,352			2,081			3,433			329,809			333,242
	Commercial - Investor Owned	—			4,045			4,045			482,422			486,467
	Construction and Land Development	1,201			1,559			2,760			158,151			160,911
	Residential	616			593			1,209			144,349			145,558
	Consumer & Other	34			—			34			16,943			16,977
	Total	$	3,217		$	8,278		$	11,495		$	2,094,544		$	2,106,039
Summary of Recorded Investment by Risk Category of Non-covered Loans by Portfolio Class and Category	'
	The recorded investment by risk category of the Non-covered loans by portfolio class and category at September 30, 2013, which is based upon the most recent analysis performed, and December 31, 2012 is as follows:
		September 30, 2013
	(in thousands)	Pass (1-6)			Watch (7)			Substandard (8)			Doubtful (9)			Total
	Commercial & Industrial	$	948,844		$	35,321		$	22,858		$	375		$	1,007,398
	Real Estate:
	Commercial - Owner Occupied	315,715			20,862			14,076			—			350,653
	Commercial - Investor Owned	381,553			43,654			25,895			—			451,102
	Construction and Land Development	81,799			17,385			14,951			473			114,608
	Residential	135,455			7,282			7,583			—			150,320
	Consumer & Other	36,740			4			—			—			36,744
	Total	$	1,900,106		$	124,508		$	85,363		$	848		$	2,110,825
		December 31, 2012
	(in thousands)	Pass (1-6)			Watch (7)			Substandard (8)			Doubtful (9)			Total
	Commercial & Industrial	$	912,766		$	29,524		$	18,546		$	2,048		$	962,884
	Real Estate:
	Commercial - Owner Occupied	290,850			26,336			15,898			158			333,242
	Commercial - Investor Owned	389,886			64,707			31,874			—			486,467
	Construction and Land Development	124,857			9,543			26,012			499			160,911
	Residential	130,159			5,921			9,478			—			145,558
	Consumer & Other	16,972			5			—			—			16,977
	Total	$	1,865,490		$	136,036		$	101,808		$	2,705		$	2,106,039

Portfolio_Loans_Covered_by_Los1

Portfolio Loans Covered by Loss Share (Covered loans) (Tables)	9 Months Ended
	Sep. 30, 2013
Covered Loans [Line Items]	'
Summary of Covered Loans by Category	'
	Below is a summary of Covered loans by category at September 30, 2013, and December 31, 2012:
		September 30, 2013				December 31, 2012
	(in thousands)	Weighted-	Recorded			Weighted-	Recorded
		Average	Investment			Average	Investment
		Risk Rating	Covered Loans			Risk Rating	Covered Loans
	Real Estate Loans:
	Construction and Land Development	6.96		$15,332		7.06		$30,537
	Commercial real estate - Investor Owned	6.54	51,842			6.08	57,602
	Commercial real estate - Owner Occupied	6.87	43,252			6.65	47,140
	Residential real estate	5.95	37,446			5.68	42,531
	Total real estate loans			$147,872				$177,810
	Commercial and industrial	6.99	9,095			6.57	22,034
	Consumer & other	6.43	1,845			4.19	1,274
	Portfolio Loans			$158,812				$201,118
Rollforward of Covered Loans [Table Text Block]	'
	The following table is a rollforward of Covered loans, net of the allowance for loan losses, for the nine months ended September 30, 2013 and 2012.
	(In thousands)	Contractual Cashflows			Less:				Less: Accretable Yield			Carrying Amount
					Non-accretable Difference
	Balance January 1, 2013	$	386,966		$	118,627			$	78,768		$	189,571
	Principal reductions and interest payments	(37,421		)	—				—			(37,421		)
	Accretion of loan discount	—			—				(19,987		)	19,987
	Changes in contractual and expected cash flows due to remeasurement	9,216			(10,858		)		14,233			5,841
	Reductions due to disposals	(68,953		)	(23,867		)		(12,288		)	(32,798		)
	Balance September 30, 2013	$	289,808		$	83,902			$	60,726		$	145,180
	Balance January 1, 2012	$	618,791		$	256,481			$	63,335		$	298,975
	Principal reductions and interest payments	(68,783		)	—				—			(68,783		)
	Accretion of loan discount	—			—				(22,231		)	22,231
	Changes in contractual and expected cash flows due to remeasurement	1,671			(67,401		)		67,178			1,894
	Reductions due to disposals	(107,669		)	(50,846		)		(12,837		)	(43,986		)
	Balance September 30, 2012	$	444,010		$	138,234			$	95,445		$	210,331
FDIC Loss Share Receivable [Table Text Block]	'
	A summary of activity in the FDIC loss share receivable for the nine months ended September 30, 2013 is as follows:
	(In thousands)	September 30,
		2013
	Balance at beginning of period	$	61,475
	Adjustments not reflected in income:
	Cash received from the FDIC for covered assets	(9,654		)
	FDIC reimbursable losses, net	1,880
	Adjustments reflected in income:
	Amortization, net	(9,574		)
	Loan impairment (recapture)	2,205
	Reductions for payments on covered assets in excess of expected cash flows	(6,278		)
	Balance at end of period	$	40,054
Covered Loans	'
Covered Loans [Line Items]	'
Summary of Aging of the Recorded Investment in Past Due Covered Loans by Portfolio Class and Category	'
	The aging of the recorded investment in past due Covered loans by portfolio class and category at September 30, 2013, and December 31, 2012, is shown below.
		September 30, 2013
	(in thousands)	30-89 Days			90 or More				Total			Current			Total
		Past Due			Days				Past Due
					Past Due
	Commercial & Industrial	$	1,642		$	1,166			$	2,808		$	6,287		$	9,095
	Real Estate:
	Commercial - Owner Occupied	3,323			5,024				8,347			34,905			43,252
	Commercial - Investor Owned	1,653			4,465				6,118			45,724			51,842
	Construction and Land Development	—			3,886				3,886			11,446			15,332
	Residential	673			6,591				7,264			30,182			37,446
	Consumer & Other	—			—				—			1,845			1,845
	Total	$	7,291		$	21,132			$	28,423		$	130,389		$	158,812
		December 31, 2012
	(in thousands)	30-89 Days			90 or More				Total			Current			Total
		Past Due			Days				Past Due
					Past Due
	Commercial & Industrial	$	319		$	3,925			$	4,244		$	17,790		$	22,034
	Real Estate:
	Commercial - Owner Occupied	887			5,144				6,031			41,109			47,140
	Commercial - Investor Owned	308			665				973			56,629			57,602
	Construction and Land Development	36			13,532				13,568			16,969			30,537
	Residential	1,232			2,907				4,139			38,392			42,531
	Consumer & Other	1			2				3			1,271			1,274
	Total	$	2,783		$	26,175			$	28,958		$	172,160		$	201,118

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Schedule of Commitments	'
	The contractual amounts of off-balance-sheet financial instruments as of September 30, 2013, and December 31, 2012, are as follows:
	(in thousands)	September 30,		December 31,
		2013		2012
	Commitments to extend credit	$	769,704	$	722,325
	Standby letters of credit	43,452		42,561

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule of Derivatives Not Designated as Hedging Instruments, Notional Amount And Statements of Financial Position, Location	'
	The table below summarizes the notional amounts and fair values of the derivative instruments used to manage risk.
										Asset Derivatives								Liability Derivatives
										(Other Assets)								(Other Liabilities)
		Notional Amount								Fair Value								Fair Value
	(in thousands)	September 30,				December 31,				September 30,				December 31,				September 30,		December 31,
		2013				2012				2013				2012				2013		2012
	Non-designated hedging instruments
	Interest rate cap contracts	$	34,050			$	49,050			$	14			$	13			$	—	$	—
	The table below summarizes the notional amounts and fair values of the client-related derivative instruments.
										Asset Derivatives								Liability Derivatives
										(Other Assets)								(Other Liabilities)
		Notional Amount								Fair Value								Fair Value
	(in thousands)	September 30,				December 31,				September 30,				December 31,				September 30,		December 31,
		2013				2012				2013				2012				2013		2012
	Non-designated hedging instruments
	Interest rate swap contracts	$	139,223			$	126,962			$	1,114			$	1,741			$	1,114	$	1,979
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	'
	The following table shows the location and amount of gains and losses recorded in the condensed consolidated statements of operations for the three and nine months ended September 30, 2013 and 2012.
		Location of Gain or (Loss) Recognized in Operations on Derivative		Amount of Gain or (Loss) Recognized in Operations on Derivative								Amount of Gain or (Loss) Recognized in Operations on Derivative
				Three months ended September 30,								Nine months ended September 30,
	(in thousands)			2013				2012				2013				2012
	Non-designated hedging instruments
	Interest rate swap contracts	Interest and fees on loans		$	(32	)		$	(103	)		$	(205	)		$	(354	)
	The following table shows the location and amount of gains and losses related to derivatives used for risk management purposes that were recorded in the condensed consolidated statements of operations for the three and nine months ended September 30, 2013 and 2012.
		Location of Gain or (Loss) Recognized in Operations on Derivative		Amount of Gain or (Loss) Recognized in Operations on Derivative								Amount of Gain or (Loss) Recognized in Operations on Derivative
				Three months ended September 30,								Nine months ended September 30,
	(in thousands)			2013				2012				2013				2012
	Non-designated hedging instruments
	Interest rate cap contracts	Gain on state tax credits, net		$	(9	)		$	(14	)		$	1			$	(79	)

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Financial Instruments Measured at Fair Value on a Recurring Basis	'
	The following table summarizes financial instruments measured at fair value on a recurring basis as of September 30, 2013, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value.
		September 30, 2013
	(in thousands)	Quoted Prices in		Significant			Significant			Total Fair
		Active Markets		Other			Unobservable			Value
		for Identical Assets		Observable Inputs			Inputs
		(Level 1)		(Level 2)			(Level 3)
	Assets
	Securities available for sale
	Obligations of U.S. Government-sponsored enterprises	$	—	$	93,974		$	—		$	93,974
	Obligations of states and political subdivisions	—		48,151			3,042			51,193
	Residential mortgage-backed securities	—		307,879			—			307,879
	Total securities available for sale	$	—	$	450,004		$	3,042		$	453,046
	State tax credits held for sale	—		—			20,139			20,139
	Derivative financial instruments	—		1,128			—			1,128
	Total assets	$	—	$	451,132		$	23,181		$	474,313
	Liabilities
	Derivative financial instruments	$	—	$	1,114		$	—		$	1,114
	Total liabilities	$	—	$	1,114		$	—		$	1,114
Fair Value, Financial Instruments, Unobservable Input Reconciliation	'
		Securities available for sale, at fair value
		Three months ended September 30,					Nine months ended September 30,
	(in thousands)	2013		2012			2013			2012
	Beginning balance	$	3,039	$	3,042		$	3,049		$	6,763
	Total (losses) gains:
	Included in other comprehensive income	3		5			(7		)	20
	Purchases, sales, issuances and settlements:
	Purchases	—		—			—			—
	Transfer in and/or out of Level 3	—		—			—			(3,736		)
	Ending balance	$	3,042	$	3,047		$	3,042		$	3,047
	Change in unrealized (losses) gains relating to	$	3	$	5		$	(7	)	$	20
	assets still held at the reporting date
		State tax credits held for sale
		Three months ended September 30,					Nine months ended September 30,
	(in thousands)	2013		2012			2013			2012
	Beginning balance	$	19,822	$	24,836		$	23,020		$	26,350
	Total gains:
	Included in earnings	317		264			422			994
	Purchases, sales, issuances and settlements:
	Sales	—		(31		)	(3,303		)	(2,275		)
	Ending balance	$	20,139	$	25,069		$	20,139		$	25,069
	Change in unrealized gains relating to	$	317	$	257		$	(456	)	$	439
	assets still held at the reporting date
Fair Value Measurements, Nonrecurring	'
	The following table presents financial instruments and non-financial assets measured at fair value on a non-recurring basis as of September 30, 2013:
		-1		-1			-1			-1
	(in thousands)	Total Fair Value		Quoted Prices in Active			Significant			Significant			Total (losses)			Total (losses)
				Markets for			Other			Unobservable			gains for the three			gains for the nine months ended
				Identical			Observable			Inputs			months ended			30-Sep-13
				Assets			Inputs			(Level 3)			30-Sep-13
				(Level 1)			(Level 2)
	Impaired loans	$	3,172	$	—		$	—		$	3,172		$	(2,514	)	$	(8,046	)
	Other real estate	7,528		—			—			7,528			(207		)	(961		)
	Total	$	10,700	$	—		$	—		$	10,700		$	(2,721	)	$	(9,007	)
	(1) The amounts represent only balances measured at fair value during the period and still held as of the reporting date.
Summary of Carrying Amount and Fair Values of Financial Instruments Reported on the Balance Sheets	'
	Following is a summary of the carrying amounts and fair values of the Company’s financial instruments on the consolidated balance sheets at September 30, 2013, and December 31, 2012.
		September 30, 2013					December 31, 2012
	(in thousands)	Carrying Amount		Estimated fair value			Carrying Amount			Estimated fair value
	Balance sheet assets
	Cash and due from banks	$	35,238	$	35,238		$	21,906		$	21,906
	Federal funds sold	111		111			51			51
	Interest-bearing deposits	71,191		71,191			95,413			95,413
	Securities available for sale	453,046		453,046			640,212			640,212
	Other investments, at cost	15,485		15,485			14,294			14,294
	Loans held for sale	12,967		12,967			11,792			11,792
	Derivative financial instruments	1,128		1,128			1,754			1,754
	Portfolio loans, net	2,229,406		2,229,411			2,261,280			2,267,038
	State tax credits, held for sale	55,810		60,937			61,284			66,822
	Accrued interest receivable	7,897		7,897			8,497			8,497
	Balance sheet liabilities
	Deposits	2,447,917		2,453,970			2,658,851			2,669,113
	Subordinated debentures	63,081		40,474			85,081			65,840
	Federal Home Loan Bank advances	120,000		126,234			80,000			89,301
	Other borrowings	178,165		178,228			245,070			245,224
	Derivative financial instruments	1,114		1,114			1,979			1,979
	Accrued interest payable	885		885			1,282			1,282
Estimate of the Fair Value of Financial Instruments Not Recorded at Fair Value on Balance Sheet	'
	The following table presents the level in the fair value hierarchy for the estimated fair values of only the Company’s financial instruments that are not already presented on the condensed consolidated balance sheets at fair value at September 30, 2013, and December 31, 2012:
		Estimated Fair Value Measurement at Reporting Date Using								Balance at
	(in thousands)	Level 1		Level 2			Level 3			30-Sep-13
	Financial Assets:
	Portfolio loans, net	$	—	$	—		$	2,229,411		$	2,229,411
	State tax credits, held for sale	$	—	$	—		$	40,798		$	40,798
	Financial Liabilities:
	Deposits	1,825,274		—			628,696			2,453,970
	Subordinated debentures	—		40,474			—			40,474
	Federal Home Loan Bank advances	—		126,234			—			126,234
	Other borrowings	—		178,228			—			178,228
		Estimated Fair Value Measurement at Reporting Date Using								Balance at
	(in thousands)	Level 1		Level 2			Level 3			31-Dec-12
	Financial Assets:
	Portfolio loans, net	$	—	$	—		$	2,266,834		$	2,266,834
	State tax credits, held for sale	$	—	$	—		$	43,802		$	43,802
	Financial Liabilities:
	Deposits	2,079,141		—			589,972			2,669,113
	Subordinated debentures	—		65,840			—			65,840
	Federal Home Loan Bank advances	—		89,301			—			89,301
	Other borrowings	—		245,224			—			245,224

Segment_Reporting_Tables

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Schedule of Segment Reporting Information, by Segment	'
	Following are the financial results for the Company’s operating segments.
	(in thousands)	Banking			Wealth Management			Corporate and Intercompany			Total
		Three months ended September 30,
	Income Statement Information	2013
	Net interest income (expense)	$	33,476		$	(166	)	$	(736	)	$	32,574
	Provision for loan losses	2,159			—			—			2,159
	Noninterest income	1,684			2,006			26			3,716
	Noninterest expense	17,898			1,809			1,533			21,240
	Income (loss) before income tax expense (benefit)	15,103			31			(2,243		)	12,891
		2012
	Net interest income (expense)	$	38,627		$	(252	)	$	(891	)	$	37,484
	Provision for loan losses	11,937			—			—			11,937
	Noninterest income	5,418			2,088			326			7,832
	Noninterest expense	18,063			1,968			1,251			21,282
	Income (loss) before income tax expense (benefit)	14,045			(132		)	(1,816		)	12,097
		Nine months ended September 30,
	Income Statement Information	2013
	Net interest income (expense)	$	105,738		$	(292	)	$	(2,665	)	$	102,781
	Provision for loan losses	(305		)	—			—			(305		)
	Noninterest income	(1,758		)	6,611			100			4,953
	Noninterest expense	53,137			5,644			4,355			63,136
	Income (loss) before income tax expense (benefit)	51,148			675			(6,920		)	44,903
		2012
	Net interest income (expense)	$	105,646		$	(566	)	$	(2,834	)	$	102,246
	Provision for loan losses	16,221			—			—			16,221
	Noninterest income	5,571			6,718			371			12,660
	Noninterest expense	54,424			5,761			3,875			64,060
	Income (loss) before income tax expense (benefit)	40,572			391			(6,338		)	34,625
	Balance Sheet Information	September 30, 2013						31-Dec-12
	Total assets:
	Banking	$	2,994,008					$	3,195,096
	Wealth Management	96,943						112,020
	Corporate and Intercompany	17,111						18,670
	Total	3,108,062						3,325,786

Branch_Sale_Tables

Branch Sale (Tables)	9 Months Ended
	Sep. 30, 2013
Branch Sale [Abstract]	'
Disclosure of Long Lived Assets Held-for-sale	'
	The following table summarizes the primary balance sheet amounts relative to the branches to be sold:
	(in thousands)
	Assets
	Cash and cash equivalents	$	805
	Loans	7,696
	Other assets	1,206
	Liabilities
	Deposits	$	81,298

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]	'	'	'	'
Net income as reported	$8,410	$7,930	$29,483	$22,881
Preferred stock dividend	0	-436	0	-1,312
Accretion of preferred stock discount	0	-212	0	-621
Net income available to common shareholders	8,410	7,282	29,483	20,948
Impact of assumed conversions	'	'	'	'
Interest on 9% convertible trust preferred securities, net of income tax	217	371	926	1,113
Net income available to common shareholders and assumed conversions	$8,627	$7,653	$30,409	$22,061
Weighted average common shares outstanding (in shares)	18,779,000	17,876,000	18,288,000	17,829,000
Incremental shares from assumed conversions of convertible trust preferred securities (in shares)	851,000	1,439,000	1,241,000	1,439,000
Additional dilutive common stock equivalents (in shares)	200,000	100,000	153,000	34,000
Weighted average diluted common shares outstanding (in shares)	19,830,000	19,415,000	19,682,000	19,302,000
Basic earnings per common share: (in dollars per share)	$0.45	$0.41	$1.61	$1.17
Diluted earnings per common share: (in dollars per share)	$0.44	$0.39	$1.55	$1.14
Antidilutive Securities Excluded from Computation of Earnings Per Share	'	'	'	'
Common stock equivalents excluded from earnings per share calculations due to anti-dilutive effect (in shares)	474,267	1,036,896	488,318	1,028,450
Warrants	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share	'	'	'	'
Common stock equivalents excluded from earnings per share calculations due to anti-dilutive effect (in shares)	'	324,074	9,497	324,074
Convertible Debt Securities	'	'	'	'
Debt Instrument, Interest Rate, Stated Percentage [Abstract]	'	'	'	'
Convertible trust preferred securities, interest rate, stated percentage	9.00%	9.00%	9.00%	9.00%

Investments_Schedule_of_Availa

Investments - Schedule of Available-for-sale Securities Reconciliation (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Available for sale securities:	'	'
Amortized Cost	$456,289,000	$627,462,000
Gross Unrealized Gains	4,805,000	13,492,000
Gross Unrealized Losses	-8,048,000	-742,000
Fair Value	453,046,000	640,212,000
Percentage of shareholders' equity held by one issuer, maximum	10.00%	10.00%
Available-for-sale securities pledged as collateral, fair value	227,500,000	359,300,000
Mortgage-backed securities, weighted average life	'5 years	'
Obligations of U.S. Government sponsored enterprises	'	'
Available for sale securities:	'	'
Amortized Cost	93,680,000	149,039,000
Gross Unrealized Gains	599,000	3,329,000
Gross Unrealized Losses	-305,000	0
Fair Value	93,974,000	152,368,000
Obligations of states and political subdivisions	'	'
Available for sale securities:	'	'
Amortized Cost	51,702,000	51,202,000
Gross Unrealized Gains	1,079,000	2,279,000
Gross Unrealized Losses	-1,588,000	-478,000
Fair Value	51,193,000	53,003,000
Residential mortgage-backed securities	'	'
Available for sale securities:	'	'
Amortized Cost	310,907,000	427,221,000
Gross Unrealized Gains	3,127,000	7,884,000
Gross Unrealized Losses	-6,155,000	-264,000
Fair Value	$307,879,000	$434,841,000

Investments_Investments_Classi

Investments - Investments Classified by Contractual Maturity Date (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Amortized Cost	'	'
Due in one year or less	$885	'
Due after one year through five years	107,062	'
Due after five years through ten years	23,333	'
Due after ten years	14,102	'
Mortgage-backed securities	310,907	'
Total	456,289	627,462
Estimated Fair Value	'	'
Due in one year or less	892	'
Due after one year through five years	107,703	'
Due after five years through ten years	23,516	'
Due after ten years	13,056	'
Mortgage-backed securities	307,879	'
Total	$453,046	$640,212

Investments_Schedule_of_Unreal

Investments - Schedule of Unrealized Loss on Investments (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Vaule	$239,510	$46,905
Less than 12 months, Unrealized Losses	7,227	265
12 months or more, Fair Value	11,821	14,655
12 months or more, Unrealized Losses	821	477
Total, Fair Value	251,331	61,560
Total, Unrealized Losses	8,048	742
Obligations of U.S. government sponsored enterprises	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Vaule	30,355	'
Less than 12 months, Unrealized Losses	305	'
12 months or more, Fair Value	0	'
12 months or more, Unrealized Losses	0	'
Total, Fair Value	30,355	'
Total, Unrealized Losses	305	'
Obligations of the state and political subdivisions	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Vaule	20,306	6,434
Less than 12 months, Unrealized Losses	1,230	122
12 months or more, Fair Value	3,042	3,389
12 months or more, Unrealized Losses	358	356
Total, Fair Value	23,348	9,823
Total, Unrealized Losses	1,588	478
Residential mortgage-backed securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Vaule	188,849	40,471
Less than 12 months, Unrealized Losses	5,692	143
12 months or more, Fair Value	8,779	11,266
12 months or more, Unrealized Losses	463	121
Total, Fair Value	197,628	51,737
Total, Unrealized Losses	$6,155	$264

Investments_Schedule_of_Realiz

Investments - Schedule of Realized Gain (Loss) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Investments [Abstract]	'	'	'	'
Gross gains realized	$611	$0	$1,477	$1,399
Gross losses realized	0	0	-182	-243
Proceeds from sales	$36,710	$0	$159,604	$110,876

Portfolio_Loans_Not_Covered_by2

Portfolio Loans Not Covered by Loss Share ("Non-covered") - Summary of Non-covered Loans by Category (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total	$2,110,825	$2,106,039
Non-Covered Loans	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Portfolio Loans	2,109,943	2,106,028
Unearned loan costs, net	882	11
Total	2,110,825	2,106,039
Non-Covered Loans | Construction and Land Development	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Portfolio Loans	114,608	160,911
Non-Covered Loans | Commercial Real Estate Investor Owned	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Portfolio Loans	451,102	486,467
Non-Covered Loans | Commercial Real Estate Owner Occupied	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Portfolio Loans	350,653	333,242
Non-Covered Loans | Residential Real Estate	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Portfolio Loans	150,320	145,558
Non-Covered Loans | Real Estate Loans	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Portfolio Loans	1,066,683	1,126,178
Non-Covered Loans | Commercial & Industrial	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Portfolio Loans	1,007,398	962,884
Non-Covered Loans | Consumer & Other	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Portfolio Loans	35,862	16,966
Total	$36,744	$16,977

Portfolio_Loans_Not_Covered_by3

Portfolio Loans Not Covered by Loss Share ("Non-covered") - Summary of Allowance for Loan Losses for Non-covered Loans by Portfolio Class and Category (Details) (Non-Covered Loans, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013
Allowance for Loan Losses [Roll Forward]	'	'	'
Balance	$27,619	$32,452	$34,330
Provision charged to expense	-652	-4,295	1,853
Losses charged off	-2,514	-752	-4,780
Recoveries	2,146	214	1,049
Balance	26,599	27,619	32,452
Commercial & Industrial	'	'	'
Allowance for Loan Losses [Roll Forward]	'	'	'
Balance	9,674	10,276	10,064
Provision charged to expense	117	-320	120
Losses charged off	-1,817	-400	-206
Recoveries	906	118	298
Balance	8,880	9,674	10,276
Commercial Real Estate Owner Occupied	'	'	'
Allowance for Loan Losses [Roll Forward]	'	'	'
Balance	3,910	4,064	4,192
Provision charged to expense	-233	-139	179
Losses charged off	-56	-32	-312
Recoveries	14	17	5
Balance	3,635	3,910	4,064
Commercial Real Estate Investor Owned	'	'	'
Allowance for Loan Losses [Roll Forward]	'	'	'
Balance	6,215	8,640	10,403
Provision charged to expense	-276	-2,273	953
Losses charged off	-504	-176	-3,052
Recoveries	360	24	336
Balance	5,795	6,215	8,640
Construction and Land Development	'	'	'
Allowance for Loan Losses [Roll Forward]	'	'	'
Balance	3,815	4,936	5,239
Provision charged to expense	-1,291	-998	-127
Losses charged off	-85	-144	-190
Recoveries	385	21	14
Balance	2,824	3,815	4,936
Residential Real Estate	'	'	'
Allowance for Loan Losses [Roll Forward]	'	'	'
Balance	1,846	2,111	2,026
Provision charged to expense	-612	-299	675
Losses charged off	-52	0	-986
Recoveries	481	34	396
Balance	1,663	1,846	2,111
Consumer & Other	'	'	'
Allowance for Loan Losses [Roll Forward]	'	'	'
Balance	44	43	31
Provision charged to expense	19	1	46
Losses charged off	0	0	-34
Recoveries	0	0	0
Balance	63	44	43
Qualitative Adjustment	'	'	'
Allowance for Loan Losses [Roll Forward]	'	'	'
Balance	2,115	2,382	2,375
Provision charged to expense	1,624	-267	7
Losses charged off	0	0	0
Recoveries	0	0	0
Balance	$3,739	$2,115	$2,382

Portfolio_Loans_Not_Covered_by4

Portfolio Loans Not Covered by Loss Share ("Non-covered") - Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method (Details) (USD $)	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Loans - Ending Balance:	'	'	'	'
Total	$2,110,825	'	'	$2,106,039
Non-Covered Loans	'	'	'	'
Allowance for Loan Losses - Ending Balance:	'	'	'	'
Individually evaluated for impairment	4,306	'	'	8,176
Collectively evaluated for impairment	22,293	'	'	26,154
Total	26,599	27,619	32,452	34,330
Loans - Ending Balance:	'	'	'	'
Individually evaluated for Impairment	24,169	'	'	38,727
Collectively evaluated for impairment	2,086,656	'	'	2,067,312
Total	2,109,943	'	'	2,106,028
Total	2,110,825	'	'	2,106,039
Non-Covered Loans | Commercial & Industrial	'	'	'	'
Allowance for Loan Losses - Ending Balance:	'	'	'	'
Individually evaluated for impairment	2,610	'	'	3,446
Collectively evaluated for impairment	6,270	'	'	6,618
Total	8,880	9,674	10,276	10,064
Loans - Ending Balance:	'	'	'	'
Individually evaluated for Impairment	5,974	'	'	8,934
Collectively evaluated for impairment	1,001,424	'	'	953,950
Total	1,007,398	'	'	962,884
Non-Covered Loans | Commercial Real Estate Owner Occupied	'	'	'	'
Allowance for Loan Losses - Ending Balance:	'	'	'	'
Individually evaluated for impairment	0	'	'	339
Collectively evaluated for impairment	3,635	'	'	3,853
Total	3,635	3,910	4,064	4,192
Loans - Ending Balance:	'	'	'	'
Individually evaluated for Impairment	191	'	'	5,772
Collectively evaluated for impairment	350,462	'	'	327,470
Total	350,653	'	'	333,242
Non-Covered Loans | Commercial Real Estate Investor Owned	'	'	'	'
Allowance for Loan Losses - Ending Balance:	'	'	'	'
Individually evaluated for impairment	973	'	'	3,400
Collectively evaluated for impairment	4,822	'	'	7,003
Total	5,795	6,215	8,640	10,403
Loans - Ending Balance:	'	'	'	'
Individually evaluated for Impairment	10,830	'	'	16,762
Collectively evaluated for impairment	440,272	'	'	469,705
Total	451,102	'	'	486,467
Non-Covered Loans | Construction and Land Development	'	'	'	'
Allowance for Loan Losses - Ending Balance:	'	'	'	'
Individually evaluated for impairment	712	'	'	732
Collectively evaluated for impairment	2,112	'	'	4,507
Total	2,824	3,815	4,936	5,239
Loans - Ending Balance:	'	'	'	'
Individually evaluated for Impairment	6,499	'	'	4,695
Collectively evaluated for impairment	108,109	'	'	156,216
Total	114,608	'	'	160,911
Non-Covered Loans | Residential Real Estate	'	'	'	'
Allowance for Loan Losses - Ending Balance:	'	'	'	'
Individually evaluated for impairment	11	'	'	259
Collectively evaluated for impairment	1,652	'	'	1,767
Total	1,663	1,846	2,111	2,026
Loans - Ending Balance:	'	'	'	'
Individually evaluated for Impairment	675	'	'	2,564
Collectively evaluated for impairment	149,645	'	'	142,994
Total	150,320	'	'	145,558
Non-Covered Loans | Consumer & Other	'	'	'	'
Allowance for Loan Losses - Ending Balance:	'	'	'	'
Individually evaluated for impairment	0	'	'	0
Collectively evaluated for impairment	63	'	'	31
Total	63	44	43	31
Loans - Ending Balance:	'	'	'	'
Individually evaluated for Impairment	0	'	'	0
Collectively evaluated for impairment	36,744	'	'	16,977
Total	35,862	'	'	16,966
Total	36,744	'	'	16,977
Non-Covered Loans | Qualitative Adjustment	'	'	'	'
Allowance for Loan Losses - Ending Balance:	'	'	'	'
Individually evaluated for impairment	0	'	'	0
Collectively evaluated for impairment	3,739	'	'	2,375
Total	3,739	2,115	2,382	2,375
Loans - Ending Balance:	'	'	'	'
Individually evaluated for Impairment	0	'	'	0
Collectively evaluated for impairment	0	'	'	0
Total	$0	'	'	$0

Portfolio_Loans_Not_Covered_by5

Portfolio Loans Not Covered by Loss Share ("Non-covered") - Summary of Non-covered Loans Individually Evaluated for Impairment by Category (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

loan

loan

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Unadvanced Commitment on Impaired Loan

Unadvanced Commitment on Impaired Loan

Commercial & Industrial

Commercial & Industrial

Commercial Real Estate Owner Occupied

Commercial Real Estate Owner Occupied

Commercial Real Estate Investor Owned

Commercial Real Estate Investor Owned

Construction and Land Development

Construction and Land Development

Residential Real Estate

Residential Real Estate

Consumer & Other

Consumer & Other

Financing Receivable, Impaired [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unpaid Contractual Principal Balance

'

'

$26,399,000

$45,218,000

$6,333,000

$9,005,000

$191,000

$6,726,000

$11,969,000

$19,864,000

$7,206,000

$6,491,000

$700,000

$3,132,000

$0

$0

'

'

Recorded Investment With No Allowance

'

'

11,334,000

5,645,000

1,441,000

96,000

195,000

2,178,000

4,960,000

185,000

4,278,000

1,560,000

460,000

1,626,000

0

0

'

'

Recorded Investment With Allowance

'

'

13,416,000

33,082,000

4,642,000

8,838,000

0

3,594,000

6,158,000

16,577,000

2,389,000

3,135,000

227,000

938,000

0

0

'

'

Total Recorded Investment

'

'

24,750,000

38,727,000

6,083,000

8,934,000

195,000

5,772,000

11,118,000

16,762,000

6,667,000

4,695,000

687,000

2,564,000

0

0

'

'

Related Allowance

'

'

4,306,000

8,176,000

2,610,000

3,446,000

0

339,000

973,000

3,400,000

712,000

732,000

11,000

259,000

0

0

'

'

Average Recorded Investment

'

'

29,632,000

39,491,000

7,379,000

6,379,000

2,381,000

7,985,000

12,346,000

10,500,000

5,165,000

10,259,000

2,361,000

4,368,000

0

0

'

'

Table Text Block Supplement [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of loans over 90 days past due and still accruing

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest lost on impaired loans

410,000

1,453,643

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impaired Financing Receivable, Interest Income, Cash Basis Method

4,000

28,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impaired Financing Receivable, Interest Income, Accrual Method

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loans and Leases Receivable, Impaired Loans, Commitment to Lend

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,724,000

775,000

Estimated losses attributable to unadvanced commitments on impaired loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$241,000

$124,000

Portfolio_Loans_Not_Covered_by6

Portfolio Loans Not Covered by Loss Share ("Non-covered") - Summary of Recorded Investment in Impaired Non-covered Loans by Category (Details) (USD $)

9 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Non-Covered Loans

Commercial & Industrial

Commercial & Industrial

Commercial Real Estate Investor Owned

Commercial Real Estate Investor Owned

Commercial Real Estate Owner Occupied

Commercial Real Estate Owner Occupied

Construction and Land Development

Construction and Land Development

Residential Real Estate

Residential Real Estate

Consumer & Other

Consumer & Other

Financing Receivable, Recorded Investment, Past Due [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-accrual

'

$24,750

$37,287

$6,083

$8,929

$11,118

$16,762

$195

$5,772

$6,667

$3,260

$687

$2,564

$0

$0

Restructured

'

0

1,440

0

5

0

0

0

0

0

1,435

0

0

0

0

Loans over 90 days past due and still accruing interest

'

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Total Recorded Investment

'

$24,750

$38,727

$6,083

$8,934

$11,118

$16,762

$195

$5,772

$6,667

$4,695

$687

$2,564

$0

$0

Table Text Block Supplement [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of non-covered loans restructured and defaulted

'no

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Portfolio_Loans_Not_Covered_by7

Portfolio Loans Not Covered by Loss Share ("Non-covered") - Summary of Aging of Recorded Investment in Past Due Non-covered Loans by Portfolio Class and Category (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	$2,110,825	$2,106,039
Non-Covered Loans	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	1,915	3,217
90 or More Days Past Due	10,899	8,278
Total Past Due	12,814	11,495
Current	2,098,011	2,094,544
Total	2,109,943	2,106,028
Total	2,110,825	2,106,039
Non-Covered Loans | Commercial & Industrial	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	445	14
90 or More Days Past Due	1,337	0
Total Past Due	1,782	14
Current	1,005,616	962,870
Total	1,007,398	962,884
Non-Covered Loans | Commercial Real Estate Owner Occupied	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	442	1,352
90 or More Days Past Due	190	2,081
Total Past Due	632	3,433
Current	350,021	329,809
Total	350,653	333,242
Non-Covered Loans | Commercial Real Estate Investor Owned	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	1,025	0
90 or More Days Past Due	6,842	4,045
Total Past Due	7,867	4,045
Current	443,235	482,422
Total	451,102	486,467
Non-Covered Loans | Construction and Land Development	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	0	1,201
90 or More Days Past Due	2,210	1,559
Total Past Due	2,210	2,760
Current	112,398	158,151
Total	114,608	160,911
Non-Covered Loans | Residential Real Estate	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	0	616
90 or More Days Past Due	320	593
Total Past Due	320	1,209
Current	150,000	144,349
Total	150,320	145,558
Non-Covered Loans | Consumer & Other	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	3	34
90 or More Days Past Due	0	0
Total Past Due	3	34
Current	36,741	16,943
Total	35,862	16,966
Total	$36,744	$16,977

Portfolio_Loans_Not_Covered_by8

Portfolio Loans Not Covered by Loss Share ("Non-covered") - Summary of Recorded Investment by Risk Category of Non-covered Loans by Portfolio Class and Category (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable, Credit Quality, Time Period Expected to Return to Perform	'12 months	'
Total	$2,110,825	$2,106,039
Non-Covered Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	2,109,943	2,106,028
Total	2,110,825	2,106,039
Non-Covered Loans | Pass (1-6)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	1,900,106	1,865,490
Non-Covered Loans | Watch (7)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	124,508	136,036
Non-Covered Loans | Substandard (8)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	85,363	101,808
Non-Covered Loans | Doubtful (9)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	848	2,705
Non-Covered Loans | Commercial & Industrial	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	1,007,398	962,884
Non-Covered Loans | Commercial & Industrial | Pass (1-6)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	948,844	912,766
Non-Covered Loans | Commercial & Industrial | Watch (7)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	35,321	29,524
Non-Covered Loans | Commercial & Industrial | Substandard (8)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	22,858	18,546
Non-Covered Loans | Commercial & Industrial | Doubtful (9)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	375	2,048
Non-Covered Loans | Commercial Real Estate Owner Occupied	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	350,653	333,242
Non-Covered Loans | Commercial Real Estate Owner Occupied | Pass (1-6)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	315,715	290,850
Non-Covered Loans | Commercial Real Estate Owner Occupied | Watch (7)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	20,862	26,336
Non-Covered Loans | Commercial Real Estate Owner Occupied | Substandard (8)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	14,076	15,898
Non-Covered Loans | Commercial Real Estate Owner Occupied | Doubtful (9)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	0	158
Non-Covered Loans | Commercial Real Estate Investor Owned	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	451,102	486,467
Non-Covered Loans | Commercial Real Estate Investor Owned | Pass (1-6)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	381,553	389,886
Non-Covered Loans | Commercial Real Estate Investor Owned | Watch (7)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	43,654	64,707
Non-Covered Loans | Commercial Real Estate Investor Owned | Substandard (8)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	25,895	31,874
Non-Covered Loans | Commercial Real Estate Investor Owned | Doubtful (9)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	0	0
Non-Covered Loans | Construction and Land Development	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	114,608	160,911
Non-Covered Loans | Construction and Land Development | Pass (1-6)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	81,799	124,857
Non-Covered Loans | Construction and Land Development | Watch (7)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	17,385	9,543
Non-Covered Loans | Construction and Land Development | Substandard (8)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	14,951	26,012
Non-Covered Loans | Construction and Land Development | Doubtful (9)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	473	499
Non-Covered Loans | Residential Real Estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	150,320	145,558
Non-Covered Loans | Residential Real Estate | Pass (1-6)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	135,455	130,159
Non-Covered Loans | Residential Real Estate | Watch (7)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	7,282	5,921
Non-Covered Loans | Residential Real Estate | Substandard (8)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	7,583	9,478
Non-Covered Loans | Residential Real Estate | Doubtful (9)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	0	0
Non-Covered Loans | Consumer & Other	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Portfolio Loans	35,862	16,966
Total	36,744	16,977
Non-Covered Loans | Consumer & Other | Pass (1-6)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	36,740	16,972
Non-Covered Loans | Consumer & Other | Watch (7)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	4	5
Non-Covered Loans | Consumer & Other | Substandard (8)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	0	0
Non-Covered Loans | Consumer & Other | Doubtful (9)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	$0	$0

Portfolio_Loans_Covered_by_Los2

Portfolio Loans Covered by Loss Share (Covered loans) - Summary of Covered Loans by Category (Details) (Covered Loans, USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Covered Loans [Line Items]	'	'
Recorded Investment Covered Loans	$158,812	$201,118
Construction and Land Development	'	'
Covered Loans [Line Items]	'	'
Weighted-Average Risk Rating	6.96	7.06
Recorded Investment Covered Loans	15,332	30,537
Commercial Real Estate Investor Owned	'	'
Covered Loans [Line Items]	'	'
Weighted-Average Risk Rating	6.54	6.08
Recorded Investment Covered Loans	51,842	57,602
Commercial Real Estate Owner Occupied	'	'
Covered Loans [Line Items]	'	'
Weighted-Average Risk Rating	6.87	6.65
Recorded Investment Covered Loans	43,252	47,140
Residential Real Estate	'	'
Covered Loans [Line Items]	'	'
Weighted-Average Risk Rating	5.95	5.68
Recorded Investment Covered Loans	37,446	42,531
Real Estate Loans	'	'
Covered Loans [Line Items]	'	'
Recorded Investment Covered Loans	147,872	177,810
Commercial & Industrial	'	'
Covered Loans [Line Items]	'	'
Weighted-Average Risk Rating	6.99	6.57
Recorded Investment Covered Loans	9,095	22,034
Consumer & Other	'	'
Covered Loans [Line Items]	'	'
Weighted-Average Risk Rating	6.43	4.19
Recorded Investment Covered Loans	$1,845	$1,274

Portfolio_Loans_Covered_by_Los3

Portfolio Loans Covered by Loss Share (Covered loans) - Summary of Aging of the Recorded Investment in Past Due Covered Loans by Portfolio Class and Category (Details) (Covered Loans, USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	$7,291	$2,783
90 or More Days Past Due	21,132	26,175
Total Past Due	28,423	28,958
Current	130,389	172,160
Total	158,812	201,118
Commercial & Industrial	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	1,642	319
90 or More Days Past Due	1,166	3,925
Total Past Due	2,808	4,244
Current	6,287	17,790
Total	9,095	22,034
Consumer & Other	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	0	1
90 or More Days Past Due	0	2
Total Past Due	0	3
Current	1,845	1,271
Total	1,845	1,274
Commercial Real Estate Owner Occupied	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	3,323	887
90 or More Days Past Due	5,024	5,144
Total Past Due	8,347	6,031
Current	34,905	41,109
Total	43,252	47,140
Commercial Real Estate Investor Owned	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	1,653	308
90 or More Days Past Due	4,465	665
Total Past Due	6,118	973
Current	45,724	56,629
Total	51,842	57,602
Construction and Land Development	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	0	36
90 or More Days Past Due	3,886	13,532
Total Past Due	3,886	13,568
Current	11,446	16,969
Total	15,332	30,537
Residential Real Estate	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-89 Days Past Due	673	1,232
90 or More Days Past Due	6,591	2,907
Total Past Due	7,264	4,139
Current	30,182	38,392
Total	$37,446	$42,531

Portfolio_Loans_Covered_by_Los4

Portfolio Loans Covered by Loss Share (Covered loans) - Rollforward of Covered Loans, Net of the Allowance for Loan Losses (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Allowance for Loan and Lease Losses [Roll Forward]	'	'
Balance at beginning of period	$189,571	$298,975
Principal reductions and interest payments	-37,421	-68,783
Accretion of loan discount	19,987	22,231
Reclassifications from nonaccretable difference	5,841	1,894
Reductions due to disposals	-32,798	-43,986
Balance at end of period	145,180	210,331
Accretable Yield	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'
Balance at beginning of period	78,768	63,335
Principal reductions and interest payments	0	0
Accretion of loan discount	-19,987	-22,231
Reclassifications from nonaccretable difference	14,233	67,178
Reductions due to disposals	-12,288	-12,837
Balance at end of period	60,726	95,445
Contractual Rights	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'
Balance at beginning of period	386,966	618,791
Principal reductions and interest payments	-37,421	-68,783
Accretion of loan discount	0	0
Reclassifications from nonaccretable difference	9,216	1,671
Reductions due to disposals	-68,953	-107,669
Balance at end of period	289,808	444,010
Non-accretable difference	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'
Balance at beginning of period	118,627	256,481
Principal reductions and interest payments	0	0
Accretion of loan discount	0	0
Reclassifications from nonaccretable difference	-10,858	-67,401
Reductions due to disposals	-23,867	-50,846
Balance at end of period	$83,902	$138,234

Portfolio_Loans_Covered_by_Los5

Portfolio Loans Covered by Loss Share (Covered loans) - Summary of Activity in the FDIC Loss Share Receivable (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
PORTFOLIO LOANS COVERED BY LOSS SHARE [Abstract]	'	'	'	'
FDIC loss share receivable	$40,054,000	$40,054,000	'	$61,475,000
Net cash proceeds received from FDIC loss share receivable	'	9,654,000	85,173,000	'
FDIC Indemnification Asset, Period Increase (Decrease)	'	1,880,000	'	'
FDIC Indemnification Asset, Accretion of Discount	'	-9,574,000	'	'
Loan impairment recapture	'	2,205,000	'	'
Reductions for payments on Covered assets in excess of expected cash flows	'	-6,278,000	'	'
Amount of Estimated Clawback Liability	1,400,000	1,400,000	'	'
Adjustment in FDIC clawback liability	$62,000	'	'	'

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

charge_count

Maximum

Minimum

Roseman v. Martin Sigillito

Commitments to extend credit

Commitments to extend credit

Standby letters of credit

Standby letters of credit

Unadvanced Commitment on Impaired Loan

Unadvanced Commitment on Impaired Loan

Fixed Rate Loan Commitment

Fixed Rate Loan Commitment

Plantiff

Minimum

Commitments to extend credit

Commitments to extend credit

Schedule of Commitments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Remaing Term of Letters Of Credit

'

'5 years

'6 months

'

'

'

'

'

'

'

'

'

Loans and Leases Receivable, Impaired Loans, Commitment to Lend

'

'

'

'

'

'

'

'

$1,724,000

$775,000

'

'

Estimated losses attributable to unadvanced commitments on impaired loans

'

'

'

'

'

'

'

'

241,000

124,000

'

'

Off-balance sheet financial instruments, contractual amounts

'

'

'

'

769,704,000

722,325,000

43,452,000

42,561,000

'

'

38,600,000

50,700,000

Loss contingency, damages sought, value

'

'

'

$44,000,000

'

'

'

'

'

'

'

'

Number of counts found guilty

20

'

'

'

'

'

'

'

'

'

'

'

Number of lawsuits, bank as defendant

41

'

'

'

'

'

'

'

'

'

'

'

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Details) (USD $)

1 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

Feb. 28, 2010

Nov. 30, 2008

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Non-designated hedging instruments

Risk Management

Risk Management

Risk Management

Risk Management

Risk Management

Risk Management

Risk Management

Risk Management

Risk Management

Risk Management

Client-Related

Client-Related

Client-Related

Client-Related

Client-Related

Client-Related

Client-Related

Client-Related

Client-Related

Client-Related

Interest rate cap contracts

Interest rate cap contracts

Gain on state tax credits, net

Gain on state tax credits, net

Gain on state tax credits, net

Gain on state tax credits, net

Other Assets

Other Assets

Other Liabilities

Other Liabilities

Interest rate swap contracts

Interest rate swap contracts

Interest and fees on loans

Interest and fees on loans

Interest and fees on loans

Interest and fees on loans

Other Assets

Other Assets

Other Liabilities

Other Liabilities

Interest rate cap contracts

Interest rate cap contracts

Interest rate cap contracts

Interest rate cap contracts

Interest rate cap contracts

Interest rate cap contracts

Interest rate cap contracts

Interest rate cap contracts

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrealized Gain Derivative Instruments

'

'

$1,100,000

$1,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Collateral, Right to Reclaim Cash

'

'

730,000

3,270,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount Paid to Enter Into a Series of Interest Rate Caps

751,000

2,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Summary of Derivative Instruments [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notional Amount

'

'

'

'

34,050,000

49,050,000

'

'

'

'

'

'

'

'

139,223,000

126,962,000

'

'

'

'

'

'

'

'

Asset Derivatives, Fair Value

'

'

'

'

'

'

'

'

'

'

14,000

13,000

'

'

'

'

'

'

'

'

1,114,000

1,741,000

'

'

Liability Derivatives, Fair Value

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

1,114,000

1,979,000

Amount of Gain or (Loss) Recognized in Operations on Derivative

'

'

'

'

'

'

($9,000)

($14,000)

$1,000

($79,000)

'

'

'

'

'

'

($32,000)

($103,000)

($205,000)

($354,000)

'

'

'

'

Fair_Value_Measurements_Financ

Fair Value Measurements - Financial Instruments Measured at Fair Value on a Recurring Basis (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Assets	'	'
Securities available for sale	$453,046	$640,212
State tax credits held for sale	20,139	23,020
Liabilities	'	'
State tax credits, held for sale	55,810	61,284
Tax credit stream, term	'10 years	'
Years of tax credits generated	'10 years	'
Obligations of U.S. Government sponsored enterprises	'	'
Assets	'	'
Securities available for sale	93,974	152,368
Obligations of states and political subdivisions	'	'
Assets	'	'
Securities available for sale	51,193	53,003
Residential mortgage-backed securities	'	'
Assets	'	'
Securities available for sale	307,879	434,841
Quoted Prices in Active Markets for Identical Assets (Level 1)	'	'
Assets	'	'
State tax credits held for sale	0	0
Significant Other Observable Inputs (Level 2)	'	'
Assets	'	'
State tax credits held for sale	0	0
Significant Unobservable Inputs (Level 3)	'	'
Assets	'	'
State tax credits held for sale	40,798	43,802
Significant Unobservable Inputs (Level 3) | Auction Rate Securities	'	'
Liabilities	'	'
Number of securities	3	'
Total Fair Value	'	'
Assets	'	'
State tax credits held for sale	40,798	43,802
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)	'	'
Assets	'	'
Securities available for sale	0	'
State tax credits held for sale	0	'
Derivative financial instruments	0	'
Total assets	0	'
Liabilities	'	'
Derivative financial instruments	0	'
Total liabilities	0	'
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Obligations of U.S. Government sponsored enterprises	'	'
Assets	'	'
Securities available for sale	0	'
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Obligations of states and political subdivisions	'	'
Assets	'	'
Securities available for sale	0	'
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential mortgage-backed securities	'	'
Assets	'	'
Securities available for sale	0	'
Recurring basis | Significant Other Observable Inputs (Level 2)	'	'
Assets	'	'
Securities available for sale	450,004	'
State tax credits held for sale	0	'
Derivative financial instruments	1,128	'
Total assets	451,132	'
Liabilities	'	'
Derivative financial instruments	1,114	'
Total liabilities	1,114	'
Recurring basis | Significant Other Observable Inputs (Level 2) | Obligations of U.S. Government sponsored enterprises	'	'
Assets	'	'
Securities available for sale	93,974	'
Recurring basis | Significant Other Observable Inputs (Level 2) | Obligations of states and political subdivisions	'	'
Assets	'	'
Securities available for sale	48,151	'
Recurring basis | Significant Other Observable Inputs (Level 2) | Residential mortgage-backed securities	'	'
Assets	'	'
Securities available for sale	307,879	'
Recurring basis | Significant Unobservable Inputs (Level 3)	'	'
Assets	'	'
Securities available for sale	3,042	'
State tax credits held for sale	20,139	'
Derivative financial instruments	0	'
Total assets	23,181	'
Liabilities	'	'
Derivative financial instruments	0	'
Total liabilities	0	'
Recurring basis | Significant Unobservable Inputs (Level 3) | Obligations of U.S. Government sponsored enterprises	'	'
Assets	'	'
Securities available for sale	0	'
Recurring basis | Significant Unobservable Inputs (Level 3) | Obligations of states and political subdivisions	'	'
Assets	'	'
Securities available for sale	3,042	'
Recurring basis | Significant Unobservable Inputs (Level 3) | Residential mortgage-backed securities	'	'
Assets	'	'
Securities available for sale	0	'
Recurring basis | Total Fair Value	'	'
Assets	'	'
Securities available for sale	453,046	'
State tax credits held for sale	20,139	'
Derivative financial instruments	1,128	'
Total assets	474,313	'
Liabilities	'	'
Derivative financial instruments	1,114	'
Total liabilities	1,114	'
Recurring basis | Total Fair Value | Obligations of U.S. Government sponsored enterprises	'	'
Assets	'	'
Securities available for sale	93,974	'
Recurring basis | Total Fair Value | Obligations of states and political subdivisions	'	'
Assets	'	'
Securities available for sale	51,193	'
Recurring basis | Total Fair Value | Residential mortgage-backed securities	'	'
Assets	'	'
Securities available for sale	307,879	'
Portion at Fair Value, Fair Value Disclosure | Recurring basis | Total Fair Value	'	'
Assets	'	'
State tax credits held for sale	20,100	'
Portion at Other than Fair Value, Fair Value Disclosure	'	'
Assets	'	'
State tax credits held for sale	$35,700	'
LIBOR Swap Curve	'	'
Liabilities	'	'
Discount rate, basis point spread	205	'

Fair_Value_Measurements_Fair_V

Fair Value Measurements - Fair Value, Financial Instruments, Unobservable Input Reconciliation (Details) (Recurring basis, USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Securities available for sale, at fair value	'	'	'	'
Level 3 Financial Instruments Measured at Fair Value	'	'	'	'
Beginning balance	$3,039,000	$3,042,000	$3,049,000	$6,763,000
Total gains (losses):	'	'	'	'
Included in other comprehensive income	3,000	5,000	-7,000	20,000
Purchases, sales, issuances and settlements:	'	'	'	'
Purchases	0	0	0	0
Transfer in and/or out of Level 3	0	0	0	-3,736,000
Ending Balance	3,042,000	3,047,000	3,042,000	3,047,000
Change in unrealized gains relating to assets still held at the reporting date	3,000	5,000	-7,000	20,000
State tax credits held for sale	'	'	'	'
Level 3 Financial Instruments Measured at Fair Value	'	'	'	'
Beginning balance	19,822,000	24,836,000	23,020,000	26,350,000
Total gains (losses):	'	'	'	'
Included in earnings	317,000	264,000	422,000	994,000
Purchases, sales, issuances and settlements:	'	'	'	'
Sales	0	-31,000	-3,303,000	-2,275,000
Ending Balance	20,139,000	25,069,000	20,139,000	25,069,000
Change in unrealized gains relating to assets still held at the reporting date	$317,000	$257,000	($456,000)	$439,000

Fair_Value_Measurements_Fair_V1

Fair Value Measurements - Fair Value Measurements, Nonrecurring (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets, Fair Value Disclosure, Change in Fair Value, Gains (Losses) in Period	($2,721)	($9,007)
Impaired loans	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets, Fair Value Disclosure, Change in Fair Value, Gains (Losses) in Period	-2,514	-8,046
Other real estate	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets, Fair Value Disclosure, Change in Fair Value, Gains (Losses) in Period	-207	-961
Quoted Prices in Active Markets for Identical Assets (Level 1)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Impaired loans	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other real estate	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other real estate	0	0
Significant Other Observable Inputs (Level 2)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total	0	0
Significant Other Observable Inputs (Level 2) | Impaired loans	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans	0	0
Significant Other Observable Inputs (Level 2) | Other real estate	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other real estate	0	0
Significant Unobservable Inputs (Level 3)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total	10,700	10,700
Significant Unobservable Inputs (Level 3) | Impaired loans	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans	3,172	3,172
Significant Unobservable Inputs (Level 3) | Other real estate	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other real estate	7,528	7,528
Total Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total	10,700	10,700
Total Fair Value | Impaired loans	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans	3,172	3,172
Total Fair Value | Other real estate	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other real estate	$7,528	$7,528

Fair_Value_Measurements_Summar

Fair Value Measurements - Summary of the Carrying Amounts and Fair Values of the Companybs Financial Instruments on the Consolidated Balance Sheets (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Balance sheet assets	'	'
Securities available for sale	$453,046	$640,212
State tax credits held for sale	20,139	23,020
Carrying Amount	'	'
Balance sheet assets	'	'
Cash and due from banks	35,238	21,906
Federal funds sold	111	51
Interest-bearing deposits	71,191	95,413
Securities available for sale	453,046	640,212
Other Investments, at cost	15,485	14,294
Loans held for sale	12,967	11,792
Derivative financial instruments	1,128	1,754
Portfolio loans, net	2,229,406	2,261,280
State tax credits held for sale	55,810	61,284
Accrued interest receivable	7,897	8,497
Balance sheet liabilities	'	'
Deposits	2,447,917	2,658,851
Subordinated debentures	63,081	85,081
Federal Home Loan Bank advances	120,000	80,000
Other borrowings	178,165	245,070
Derivative financial instruments	1,114	1,979
Accrued interest payable	885	1,282
Estimated fair value	'	'
Balance sheet assets	'	'
Cash and due from banks	35,238	21,906
Federal funds sold	111	51
Interest-bearing deposits	71,191	95,413
Securities available for sale	453,046	640,212
Other Investments, at cost	15,485	14,294
Loans held for sale	12,967	11,792
Derivative financial instruments	1,128	1,754
Portfolio loans, net	2,229,411	2,267,038
State tax credits held for sale	60,937	66,822
Accrued interest receivable	7,897	8,497
Balance sheet liabilities	'	'
Deposits	2,453,970	2,669,113
Subordinated debentures	40,474	65,840
Federal Home Loan Bank advances	126,234	89,301
Other borrowings	178,228	245,224
Derivative financial instruments	1,114	1,979
Accrued interest payable	$885	$1,282

Fair_Value_Measurements_Estima

Fair Value Measurements - Estimate of the Fair Value of Financial Instruments Not Recorded at Fair Value on Balance Sheet (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financial Assets:	'	'
State tax credits held for sale	$20,139	$23,020
Fair Value, Level 1	'	'
Financial Assets:	'	'
Portfolio loans, net	0	0
State tax credits held for sale	0	0
Financial Liabilities:	'	'
Deposits	1,825,274	2,079,141
Subordinated debentures	0	0
Federal Home Loan Bank advances	0	0
Other borrowings	0	0
Fair Value, Level 2	'	'
Financial Assets:	'	'
Portfolio loans, net	0	0
State tax credits held for sale	0	0
Financial Liabilities:	'	'
Deposits	0	0
Subordinated debentures	40,474	65,840
Federal Home Loan Bank advances	126,234	89,301
Other borrowings	178,228	245,224
Fair Value, Level 3	'	'
Financial Assets:	'	'
Portfolio loans, net	2,229,411	2,266,834
State tax credits held for sale	40,798	43,802
Financial Liabilities:	'	'
Deposits	628,696	589,972
Subordinated debentures	0	0
Federal Home Loan Bank advances	0	0
Other borrowings	0	0
Estimated fair value	'	'
Financial Assets:	'	'
Portfolio loans, net	2,229,411	2,266,834
State tax credits held for sale	40,798	43,802
Financial Liabilities:	'	'
Deposits	2,453,970	2,669,113
Subordinated debentures	40,474	65,840
Federal Home Loan Bank advances	126,234	89,301
Other borrowings	$178,228	$245,224

Segment_Reporting_Details

Segment Reporting (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
			segment
Segment Reporting [Abstract]	'	'	'	'	'
Number of Primary Operating Segments	'	'	2	'	'
Number of Reportable Segments	'	'	2	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Goodwill	$30,334	'	$30,334	'	$30,334
Intangibles, net	6,136	'	6,136	'	7,406
Deposits	2,447,917	'	2,447,917	'	2,658,851
Total assets	3,108,062	'	3,108,062	'	3,325,786
Income Statement Information	'	'	'	'	'
Net interest income (expense)	32,574	37,484	102,781	102,246	'
Provision for loan losses	2,159	11,937	-305	16,221	'
Noninterest Income	3,716	7,832	4,953	12,660	'
Noninterest Expense	21,240	21,282	63,136	64,060	'
Income before income tax expense	12,891	12,097	44,903	34,625	'
Banking	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total assets	2,994,008	'	2,994,008	'	3,195,096
Income Statement Information	'	'	'	'	'
Net interest income (expense)	33,476	38,627	105,738	105,646	'
Provision for loan losses	2,159	11,937	-305	16,221	'
Noninterest Income	1,684	5,418	-1,758	5,571	'
Noninterest Expense	17,898	18,063	53,137	54,424	'
Income before income tax expense	15,103	14,045	51,148	40,572	'
Wealth Management	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total assets	96,943	'	96,943	'	112,020
Income Statement Information	'	'	'	'	'
Net interest income (expense)	-166	-252	-292	-566	'
Provision for loan losses	0	0	0	0	'
Noninterest Income	2,006	2,088	6,611	6,718	'
Noninterest Expense	1,809	1,968	5,644	5,761	'
Income before income tax expense	31	-132	675	391	'
Corporate and Intercompany	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total assets	17,111	'	17,111	'	18,670
Income Statement Information	'	'	'	'	'
Net interest income (expense)	-736	-891	-2,665	-2,834	'
Provision for loan losses	0	0	0	0	'
Noninterest Income	26	326	100	371	'
Noninterest Expense	1,533	1,251	4,355	3,875	'
Income before income tax expense	($2,243)	($1,816)	($6,920)	($6,338)	'

Branch_Sale_Details

Branch Sale (Details) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Branch Sale [Abstract]	'
Number of branches to be sold	2
Long Lived Assets Held-for-sale [Line Items]	'
Assets Held-for-sale, Current	$805
Liabilities of Assets Held-for-sale	81,298
Loans Receivable	'
Long Lived Assets Held-for-sale [Line Items]	'
Assets Held-for-sale, Long Lived	7,696
Other Assets	'
Long Lived Assets Held-for-sale [Line Items]	'
Assets Held-for-sale, Long Lived	$1,206