Limestone Bancorp (LMST) 10-Q 13 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 31, 2013
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'PBIB	'
Entity Registrant Name	'PORTER BANCORP, INC.	'
Entity Central Index Key	'0001358356	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Smaller Reporting Company	'
Entity Common Stock, Shares Outstanding	'	12,846,668

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets	'	'
Cash and due from financial institutions	$51,444	$46,512
Federal funds sold	1,989	3,060
Cash and cash equivalents	53,433	49,572
Securities available for sale	193,981	178,476
Mortgage loans held for sale	123	507
Loans, net of allowance of $31,754 and $56,680, respectively	702,486	842,412
Premises and equipment	20,167	20,805
Other real estate owned	41,857	43,671
Federal Home Loan Bank stock	10,072	10,072
Bank owned life insurance	8,841	8,398
Accrued interest receivable and other assets	7,167	8,718
Total assets	1,038,127	1,162,631
Deposits	'	'
Non-interest bearing	101,191	114,310
Interest bearing	845,705	950,749
Total deposits	946,896	1,065,059
Repurchase agreements	3,722	2,634
Federal Home Loan Bank advances	4,741	5,604
Accrued interest payable and other liabilities	14,578	10,169
Subordinated capital note	6,075	6,975
Junior subordinated debentures	25,000	25,000
Total liabilities	1,001,012	1,115,441
Stockholders' equity	'	'
Common stock, no par, 86,000,000 shares authorized, 12,846,668 and 12,002,421 shares issued and outstanding, respectively	112,236	112,236
Additional paid-in capital	20,673	20,283
Retained deficit	-129,043	-126,517
Accumulated other comprehensive income	-5,009	3,065
Total stockholders' equity	37,115	47,190
Total liabilities and stockholders' equity	1,038,127	1,162,631
Preferred stock Series A	'	'
Stockholders' equity	'	'
Preferred stock	34,975	34,840
Preferred stock Series C	'	'
Stockholders' equity	'	'
Preferred stock	$3,283	$3,283

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Loans, allowance	$31,754,000	$56,680,000
Preferred stock, no par	'	'
Preferred stock, shares authorized	1,000,000	1,000,000
Common stock, no par	'	'
Common stock, shares authorized	86,000,000	86,000,000
Common stock, shares issued	12,846,668	12,002,421
Common stock, shares outstanding	12,846,668	12,002,421
Preferred stock Series A	'	'
Preferred stock, issued	35,000	35,000
Preferred stock, outstanding	35,000	35,000
Preferred stock, Liquidation preference	35,000,000	'
Preferred stock Series C	'	'
Preferred stock, issued	317,042	317,042
Preferred stock, outstanding	317,042	317,042
Preferred stock, Liquidation preference	$3,600,000	'

Consolidated_Statements_of_Ope

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	'	'	'	'
Loans, including fees	$9,265	$12,797	$29,252	$40,998
Taxable securities	900	837	2,615	2,475
Tax exempt securities	239	220	691	666
Fed funds sold and other	139	133	411	415
Interest and Dividend Income, Operating, Total	10,543	13,987	32,969	44,554
Interest expense	'	'	'	'
Deposits	2,443	3,568	7,707	11,294
Federal Home Loan Bank advances	38	50	122	161
Subordinated capital note	55	66	169	204
Junior subordinated debentures	157	169	468	508
Federal funds purchased and other	1	2	4	6
Interest Expense, Total	2,694	3,855	8,470	12,173
Net interest income	7,849	10,132	24,499	32,381
Provision for loan losses	250	25,500	700	33,250
Net interest income (loss) after provision for loan losses	7,599	-15,368	23,799	-869
Non-interest income	'	'	'	'
Service charges on deposit accounts	536	563	1,535	1,673
Income from fiduciary activities	'	261	517	803
Bank card interchange fees	174	180	542	553
Other real estate owned rental income	54	180	396	242
Net gain on sales of securities	24	'	727	3,530
Income from bank owned life insurance	75	79	459	238
Other	304	458	786	1,145
Noninterest Income, Total	1,167	1,721	4,962	8,184
Non-interest expense	'	'	'	'
Salaries and employee benefits	3,837	4,264	11,975	12,558
Occupancy and equipment	884	971	2,728	2,826
Loan collection expense	531	792	3,973	1,738
Other real estate owned expense	669	5,204	3,117	7,666
FDIC Insurance	578	559	1,867	2,264
State franchise tax	537	496	1,611	1,680
Professional fees	503	776	1,408	1,699
Communications	177	175	531	523
Insurance expense	171	98	482	296
Postage and delivery	99	108	314	339
Other	482	707	1,835	1,870
Non-interest expense	8,468	14,150	29,841	33,459
Income (loss) before income taxes	298	-27,797	-1,080	-26,144
Income tax benefit	'	-65	'	-65
Net income (loss)	298	-27,732	-1,080	-26,079
Less:	'	'	'	'
Dividends on preferred stock	437	437	1,311	1,312
Accretion on Series A preferred stock	45	44	135	134
Earnings (losses) allocated to participating securities	-16	-1,264	-174	-1,095
Net income (loss) attributable to common shareholders	($168)	($26,949)	($2,352)	($26,430)
Basic earnings (loss) per common share	($0.01)	($2.29)	($0.20)	($2.25)
Diluted earnings (loss) per common share	($0.01)	($2.29)	($0.20)	($2.25)

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (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 (loss)	$298	($27,732)	($1,080)	($26,079)
Unrealized gain (loss) on securities:	'	'	'	'
Unrealized gain (loss) arising during the period (net of tax of $887, $821, $4,093 and $970, respectively)	-1,647	1,525	-7,601	1,803
Reclassification of amount realized through sales (net of tax of $8, $0, $254, and $1,235, respectively)	-16	'	-473	-2,295
Other comprehensive income (loss)	-1,663	1,525	-8,074	-492
Comprehensive loss	($1,365)	($26,207)	($9,154)	($26,571)

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Loss) (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
Unrealized gain (loss) arising during the period, tax	$887	$821	$4,093	$970
Reclassification of amount realized through sales, tax	$8	$0	$254	$1,235

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Stockholders' Equity (USD $)	Total	Common	Series A Preferred	Series C Preferred	Additional Paid-In Capital	Retained Deficit	Accumulated Other Comprehensive Income
In Thousands, except Share data
Beginning Balances at Dec. 31, 2012	$47,190	$112,236	$34,840	$3,283	$20,283	($126,517)	$3,065
Beginning Balances (in shares) at Dec. 31, 2012	'	12,002,421	35,000	317,042	'	'	'
Issuance of unvested stock	'	875,569	'	'	'	'	'
Forfeited unvested stock	'	-31,322	'	'	'	'	'
Stock-based compensation expense	390	'	'	'	390	'	'
Net loss	-1,080	'	'	'	'	-1,080	'
Net change in accumulated other comprehensive income, net of taxes	-8,074	'	'	'	'	'	-8,074
Dividends 5% on Series A preferred stock	-1,311	'	'	'	'	-1,311	'
Accretion of Series A preferred stock discount	'	'	135	'	'	-135	'
Ending Balances at Sep. 30, 2013	$37,115	$112,236	$34,975	$3,283	$20,673	($129,043)	($5,009)
Ending Balances (in shares) at Sep. 30, 2013	'	12,846,668	35,000	317,042	'	'	'

Consolidated_Statement_of_Chan1

Consolidated Statement of Changes in Stockholders' Equity (Parenthetical)	9 Months Ended
	Sep. 30, 2013
Dividends on Series A preferred stock, per share	5.00%

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Cash flows from operating activities	'	'	'
Net loss	($1,080)	($26,079)	'
Adjustments to reconcile net loss to net cash from operating activities	'	'	'
Depreciation and amortization	1,506	1,819	'
Provision for loan losses	700	33,250	40,300
Net amortization on securities	1,709	2,610	'
Stock-based compensation expense	390	338	'
Net gain on loans originated for sale	-76	-260	'
Loans originated for sale	-3,160	-12,214	'
Proceeds from sales of loans originated for sale	3,609	12,910	'
Net gain on sales of investment securities	-727	-3,530	'
Net loss on sales of other real estate owned	190	1,481	'
Net write-down of other real estate owned	1,584	5,090	'
Earnings on bank owned life insurance	-443	-222	'
Net change in accrued interest receivable and other assets	1,144	5,075	'
Net change in accrued interest payable and other liabilities	3,098	4,027	'
Net cash from operating activities	8,444	24,295	'
Cash flows from investing activities	'	'	'
Purchases of available-for-sale securities	-50,266	-141,232	'
Sales and calls of available-for-sale securities	2,712	65,695	'
Maturities and prepayments of available-for-sale securities	22,993	36,649	'
Proceeds from sale of other real estate owned	18,567	17,032	'
Improvements to other real estate owned	'	-1	'
Loan originations and payments, net	120,453	120,958	'
Purchases of premises and equipment, net	-204	-399	'
Net cash from investing activities	114,255	98,702	'
Cash flows from financing activities	'	'	'
Net change in deposits	-118,163	-146,236	'
Net change in repurchase agreements	1,088	665	'
Repayment of Federal Home Loan Bank advances	-863	-1,156	'
Repayment of subordinated capital note	-900	-450	'
Net cash from financing activities	-118,838	-147,177	'
Net change in cash and cash equivalents	3,861	-24,180	'
Beginning cash and cash equivalents	49,572	105,962	105,962
Ending cash and cash equivalents	53,433	81,782	49,572
Supplemental cash flow information:	'	'	'
Interest paid	8,156	11,808	'
Income taxes paid (refunded)	'	-2,000	'
Supplemental non-cash disclosure:	'	'	'
Transfer from loans to other real estate	18,542	31,531	'
Financed sales of other real estate owned	$15	$541	'

Basis_of_Presentation_and_Summ

Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2013
Basis of Presentation and Summary of Significant Accounting Policies	'
	Note 1 – Basis of Presentation and Summary of Significant Accounting Policies
	Basis of Presentation – The consolidated financial statements include Porter Bancorp, Inc. (Company or PBI) and its subsidiary, PBI Bank (Bank). The Company owns a 100% interest in the Bank. All significant inter-company transactions and accounts have been eliminated in consolidation.
	The accompanying unaudited consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, the financial statements do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for nine months ended September 30, 2013 are not necessarily indicative of the results that may be expected for the entire year. A description of other significant accounting policies is presented in the notes to the Consolidated Financial Statements for the year ended December 31, 2012 included in the Company’s Annual Report on Form 10-K.
	Use of Estimates – To prepare financial statements in conformity with U.S. generally accepted accounting principles, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and future results could differ. The allowance for loan losses, fair values of financial instruments, stock compensation, deferred tax assets, other intangibles, and fair values of other real estate owned are particularly subject to change.
	Reclassifications – Some items in the prior year financial statements were reclassified to conform to the current presentation. The reclassifications did not impact net income or stockholders’ equity.

Going_Concern_Considerations_a

Going Concern Considerations and Future Plans	9 Months Ended
	Sep. 30, 2013
Going Concern Considerations and Future Plans	'
	Note 2 – Going Concern Considerations and Future Plans
	The consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business for the foreseeable future. However, the events and circumstances described in this Note raise substantial doubt about the Company’s ability to continue as a going concern.
	During the first nine months of 2013, we reported net loss to common shareholders of $2.4 million, compared with net loss to common shareholders of $26.4 million for the first nine months of 2012. This was primarily due to a reduction in provision for loan loss expense of $32.6 million, and a $3.6 million decrease in non-interest expense, countered by a $7.9 million reduction in net interest income, driven by the reduction of the size of our loan portfolio.
	For the year ended December 31, 2012, we reported net loss to common shareholders of $33.4 million. This loss was attributable primarily to $40.3 million of provision for loan losses expense. A decline in credit quality in our portfolio during the year resulted in net charge-offs of $36.1 million, and OREO expense of $10.5 million resulting from fair value write-downs driven by new appraisals and reduced marketing prices, net loss on sales, and ongoing operating expense. We also had lower net interest margin due to lower average loans outstanding, loans re-pricing at lower rates, and the level of non-performing loans in our portfolio. Net loss to common shareholders of $33.4 million, for the year ended December 31, 2012, compares with net loss to common shareholders of $105.2 million for the year ended December 31, 2011.
	In the fourth quarter of 2011, we began deferring the payment of regular quarterly cash dividends on our Series A Preferred Stock issued to the U.S. Treasury. At September 30, 2013, cumulative accrued and unpaid dividends on this stock totaled $3.7 million. We have deferred dividend payments for more than six quarters and the holder of our Series A Preferred Stock (currently the U.S. Treasury) has the right to appoint up to two representatives to our Board of Directors. We continue to accrue deferred dividends, which are deducted from income to common shareholders for financial statement purposes.
	In June 2011, the Bank agreed to a Consent Order with the FDIC and KDFI in which the Bank agreed, among other things, to improve asset quality, reduce loan concentrations, and maintain a minimum Tier 1 leverage ratio of 9% and a minimum total risk based capital ratio of 12%. The Consent Order was included in our Current Report on 8-K filed on June 30, 2011. In October 2012, the Bank entered into a new Consent Order with the FDIC and KDFI again agreeing to maintain a minimum Tier 1 leverage ratio of 9% and a minimum total risk based capital ratio of 12%. The Bank also agreed that if it should be unable to reach the required capital levels, and if directed in writing by the FDIC, then the Bank would within 30 days develop, adopt and implement a written plan to sell or merge itself into another federally insured financial institution or otherwise immediately obtain a sufficient capital investment into the Bank to fully meet the capital requirements.
	We expect to continue to work with our regulators toward capital ratio compliance as outlined in the written capital plan previously submitted by the Bank. The new Consent Order also requires the Bank to continue to adhere to the plans implemented in response to the June 2011 Consent Order, and includes the substantive provisions of the June 2011 Consent Order. The new Consent Order was included in our Current Report on 8-K filed on September 19, 2012. As of September 30, 2013, the capital ratios required by the Consent Order were not met.
	In order to meet these capital requirements, the Board of Directors and management are continuing to evaluate strategies to achieve the following objectives:
		•	Increasing capital through a possible public offering or private placement of common stock to new and existing shareholders. We have engaged a financial advisor to assist our Board in evaluating our options for increasing capital and redeeming our Series A preferred stock issued to the US Treasury in 2008 under the Capital Purchase Program.
		•	Continuing to operate the Company and Bank in a safe and sound manner. This strategy may require us to continue to reduce the size of our balance sheet, reduce our lending concentrations, consider selling loans, and reduce other noninterest expense through the disposition of OREO.
		•	Continuing with succession planning and adding resources to the management team. John T. Taylor was named President and CEO for PBI Bank and appointed to the Board of Directors in July 2012. Mr. Taylor has been named to succeed Maria Bouvette as CEO of the Company pending regulatory approval following Ms. Bouvette’s retirement effective July 31, 2013. John R. Davis was appointed Chief Credit Officer of PBI Bank in August 2012, with responsibility for establishing and executing the credit quality policies and overseeing credit administration for the organization. We have augmented our staffing in the commercial lending area, now led by Joe C. Seiler.
		•	Evaluating our internal processes and procedures, distribution of labor, and work-flow to ensure we have adequately and appropriately deployed resources in an efficient manner in the current environment. To this end, we believe the opportunity exists to centralize key processes that will lead to improved execution and cost savings.
		•	Executing on our commitment to improve credit quality and reduce loan concentrations and balance sheet risk.
		•	We have reduced the size of our loan portfolio significantly from $1.3 billion at December 31, 2010, to $1.1 billion at December 31, 2011, to $899.1 million at December 31, 2012, and $734.2 million at September 30, 2013.
		•	Our Consent Order calls for us to reduce our construction and development loans to not more than 75% of total risk-based capital. We are now in compliance as construction and development loans totaled $52.0 million, or 62% of total risk-based capital, at September 30, 2013, down from $70.3 million, or 82% of total risk-based capital, at December 31, 2012.
		•	Our Consent Order also requires us to reduce non-owner occupied commercial real estate loans, construction and development loans, and multi-family residential real estate loans as a group, to not more than 250% of total risk-based capital. While we have made significant progress over the last year, we were not in compliance with this concentration limit at September 30, 2013. These loans totaled $250.1 million, or 300% of total risk-based capital, at September 30, 2013 and $311.1 million, or 362% of total risk-based capital, at December 31, 2012.
		•	We are working to reduce our loan concentrations by curtailing new construction and development lending and new non-owner occupied commercial real estate lending. We are also receiving principal reductions from amortizing credits and pay-downs from our customers who sell properties built for resale. We have reduced the construction loan portfolio from $199.5 million at December 31, 2010 to $52.0 million at September 30, 2013. Our non-owner occupied commercial real estate loans declined from $293.3 million at December 31, 2010 to $152.0 million at September 30, 2013.
		•	Executing on our commitment to sell other real estate owned and reinvest in quality income producing assets.
		•	The remediation process for loans secured by real estate has led the Bank to acquire significant levels of OREO in 2012, 2011, and 2010. This trend has continued at a slower pace in 2013. The Bank acquired $33.5 million, $41.9 million, and $90.8 million during 2012, 2011, and 2010, respectively. For the first nine months of 2013, we acquired $18.5 million of OREO.
		•	We have incurred significant losses in disposing of this real estate. We incurred losses totaling $9.3 million, $42.8 million, and $13.9 million in 2012, 2011, and 2010, respectively, from sales at less than carrying values and fair value write-downs attributable to declines in appraisal valuations and changes in our pricing strategies. During the nine month period ended September 30, 2013, we incurred OREO losses totaling $1.8 million, which consisted of $190,000 in loss on sale and $1.6 million from declining values as evidenced by new appraisals and reduced marketing prices in connection with our sales strategies.
		•	To ensure we maximize the value we receive upon the sale of OREO, we continually evaluate sales opportunities. We are targeting multiple sales opportunities through internal marketing and the use of brokers, auctions, technology sales platforms, and bulk sale strategies. Proceeds from the sale of OREO totaled $18.6 million during the nine months ended September 30, 2013 and $22.5 million, $26.0 million and $25.0 million during 2012, 2011, and 2010, respectively.
		•	At December 31, 2012, the OREO portfolio consisted of 51% construction, development, and land assets. At September 30, 2013 this concentration had declined to 48%. This is consistent with our reduction of construction, development and other land loans, which have declined to $52.0 million at September 30, 2013 compared to $70.3 million at December 31, 2012. Commercial real estate represents 34% of the portfolio at September 30, 2013 compared with 35% at December 31, 2012. 1-4 family residential properties represent 15% of the portfolio at September 30, 2013 compared with 12% at December 31, 2012.
		•	Evaluating other strategic alternatives, such as the sale of assets or branches.
	Bank regulatory agencies can exercise discretion when an institution does not meet the terms of a consent order. Based on individual circumstances, the agencies may issue mandatory directives, impose monetary penalties, initiate changes in management, or take more serious adverse actions.

Securities

Securities	9 Months Ended
	Sep. 30, 2013
Securities	'
	Note 3 – Securities
	The fair value of available for sale securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) were as follows:
		Amortized		Gross			Gross			Fair
		Cost		Unrealized			Unrealized			Value
				Gains			Losses
		(in thousands)
	September 30, 2013:
	U.S. Government and federal agency	$	29,184	$	328		$	(1,599	)	$	27,913
	Agency mortgage-backed: residential		85,583		519			(1,529	)		84,573
	State and municipal		58,150		962			(1,965	)		57,147
	Corporate bonds		23,123		915			(473	)		23,565
	Other		572		34			—			606
	Total debt securities		196,612		2,758			(5,566	)		193,804
	Equity		135		42			—			177
	Total	$	196,747	$	2,800		$	(5,566	)	$	193,981
	December 31, 2012:
	U.S. Government and federal agency	$	5,603	$	530		$	—		$	6,133
	Agency mortgage-backed: residential		94,298		1,141			(257	)		95,182
	State and municipal		52,485		2,335			(87	)		54,733
	Corporate bonds		18,851		1,150			(37	)		19,964
	Other		572		46			—			618
	Total debt securities		171,809		5,202			(381	)		176,630
	Equity		1,359		487			—			1,846
	Total	$	173,168	$	5,689		$	(381	)	$	178,476
	Sales and calls of available for sale securities were as follows:
		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2013		2012			2013			2012
		(in thousands)					(in thousands)
	Proceeds	$	804	$	—		$	2,712		$	65,695
	Gross gains		24		—			728			3,530
	Gross losses		—		—			1			—
	The amortized cost and fair value of the debt investment securities portfolio are shown by contractual maturity. Contractual maturities may differ from actual maturities if issuers have the right to call or prepay obligations with or without call or prepayment penalties. Mortgage-backed securities not due at a single maturity date are detailed separately.
		September 30, 2013
		Amortized		Fair
		Cost		Value
		(in thousands)
	Maturity
	Available-for-sale
	Within one year	$	17,229	$	16,810
	One to five years		15,513		16,690
	Five to ten years		69,908		67,557
	Beyond ten years		8,379		8,174
	Agency mortgage-backed: residential		85,583		84,573
	Total	$	196,612	$	193,804
	Securities pledged at September 30, 2013 and December 31, 2012 had carrying values of approximately $59.3 million and $76.4 million, respectively, and were pledged to secure public deposits and repurchase agreements.
	The Company evaluates securities for other than temporary impairment (OTTI) on at least a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. Consideration is given to the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer, underlying credit quality of the issuer, and the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. In analyzing an issuer’s financial condition, the Company may consider whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, the sector or industry trends and cycles affecting the issuer, and the results of reviews of the issuer’s financial condition. Management currently intends to hold all securities with unrealized losses until recovery, which for fixed income securities may be at maturity. As of September 30, 2013, management does not believe securities within our portfolio with unrealized losses should be classified as other than temporarily impaired.
	At September 30, 2013, the Company held one equity security. This security was in an unrealized gain position as of September 30, 2013. Management monitors the underlying financial condition of the issuers and current market pricing for this equity security monthly.
	Securities with unrealized losses at September 30, 2013 and December 31, 2012, aggregated by investment category and length of time the individual securities have been in a continuous unrealized loss position, are as follows:
		Less than 12 Months					12 Months or More						Total
	Description of Securities	Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
		Value		Loss			Value			Loss			Value		Loss
		(in thousands)
	September 30, 2013:
	U.S Government & federal agency	$	22,104	$	(1,599	)	$	—		$	—		$	22,104	$	(1,599	)
	Agency mortgage-backed: residential		43,799		(1,195	)		7,864			(334	)		51,663		(1,529	)
	State and municipal		34,048		(1,897	)		1,068			(68	)		35,116		(1,965	)
	Corporate bonds		12,822		(473	)		—			—			12,822		(473	)
	Total temporarily impaired	$	112,773	$	(5,164	)	$	8,932		$	(402	)	$	121,705	$	(5,566	)
	December 31, 2012:
	Agency mortgage-backed: residential	$	23,375	$	(257	)	$	—		$	—		$	23,375	$	(257	)
	State and municipal		7,961		(87	)		—			—			7,961		(87	)
	Corporate bonds		3,777		(37	)		—			—			3,777		(37	)
Equity		2		—			—			—			2		—
Total temporarily impaired	$	35,115	$	(381	)	$	—		$	—		$	35,115	$	(381	)

Loans

Loans	9 Months Ended
	Sep. 30, 2013
Loans	'
	Note 4 – Loans
		September 30,			December 31,
		2013			2012
		(in thousands)
	Loans were as follows:
	Commercial	$	51,572		$	52,567
	Commercial Real Estate:
	Construction		51,994			70,284
	Farmland		73,159			80,825
	Nonfarm nonresidential		236,579			322,687
	Residential Real Estate:
	Multi-family		46,052			50,986
	1-4 Family		234,759			278,273
	Consumer		15,709			20,383
	Agriculture		23,669			22,317
	Other		747			770
	Subtotal		734,240			899,092
	Less: Allowance for loan losses		(31,754	)		(56,680	)
	Loans, net	$	702,486		$	842,412
	The following table presents the activity in the allowance for loan losses by portfolio segment for the three months ended September 30, 2013 and 2012:
		Commercial			Commercial			Residential			Consumer			Agriculture			Other			Total
					Real Estate			Real Estate
		(in thousands)
	September 30, 2013:
	Beginning balance	$	4,648		$	21,022		$	10,790		$	594		$	487		$	18		$	37,559
	Provision for loan losses		(539	)		196			612			61			(67	)		(13	)		250
	Loans charged off		(965	)		(4,726	)		(1,272	)		(99	)		(9	)		—			(7,071	)
	Recoveries		443			456			63			44			10			—			1,016
	Ending balance	$	3,587		$	16,948		$	10,193		$	600		$	421		$	5		$	31,754
	September 30, 2012:
	Beginning balance	$	3,811		$	31,049		$	15,587		$	792		$	343		$	12		$	51,594
	Provision for loan losses		2,630			17,412			4,326			366			763			3			25,500
	Loans charged off		(2,400	)		(16,192	)		(3,824	)		(375	)		(696	)		—			(23,487	)
	Recoveries		27			324			16			24			21			—			412
	Ending balance	$	4,068		$	32,593		$	16,105		$	807		$	431		$	15		$	54,019
	The following table presents the activity in the allowance for loan losses by portfolio segment for the nine months ended September 30, 2013 and 2012:
		Commercial			Commercial			Residential			Consumer			Agriculture			Other			Total
					Real Estate			Real Estate
		(in thousands)
	September 30, 2013:
	Beginning balance	$	4,402		$	34,768		$	16,235		$	857		$	403		$	15		$	56,680
	Provision for loan losses		94			72			522			140			(118	)		(10	)		700
	Loans charged off		(2,073	)		(18,904	)		(6,748	)		(620	)		(92	)		—			(28,437	)
	Recoveries		1,164			1,012			184			223			228			—			2,811
	Ending balance	$	3,587		$	16,948		$	10,193		$	600		$	421		$	5		$	31,754
	September 30, 2012:
	Beginning balance	$	4,207		$	33,024		$	14,217		$	792		$	325		$	14		$	52,579
	Provision for loan losses		2,641			19,187			9,528			687			1,206			1			33,250
	Loans charged off		(2,866	)		(20,055	)		(7,715	)		(747	)		(1,124	)		—			(32,507	)
	Recoveries		86			437			75			75			24			—			697
	Ending balance	$	4,068		$	32,593		$	16,105		$	807		$	431		$	15		$	54,019
	The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on the impairment method as of September 30, 2013:
		Commercial			Commercial			Residential			Consumer			Agriculture			Other			Total
					Real Estate			Real Estate
		(in thousands)
	Allowance for loan losses:
	Ending allowance balance attributable to loans:
	Individually evaluated for impairment	$	381		$	3,267		$	1,046		$	68		$	—		$	—		$	4,762
	Collectively evaluated for impairment		3,206			13,681			9,147			532			421			5			26,992
	Total ending allowance balance	$	3,587		$	16,948		$	10,193		$	600		$	421		$	5		$	31,754
	Loans:
	Loans individually evaluated for impairment	$	5,226		$	99,437		$	49,741		$	148		$	332		$	533		$	155,417
	Loans collectively evaluated for impairment		46,346			262,295			231,070			15,561			23,337			214			578,823
Total ending loans balance	$	51,572		$	361,732		$	280,811		$	15,709		$	23,669		$	747		$	734,240
The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on the impairment method as of December 31, 2012:
	Commercial			Commercial			Residential			Consumer			Agriculture			Other			Total
				Real Estate			Real Estate
	(in thousands)
Allowance for loan losses:
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$	263		$	16,046		$	4,641		$	68		$	5		$	11		$	21,034
Collectively evaluated for impairment		4,139			18,722			11,594			789			398			4			35,646
Total ending allowance balance	$	4,402		$	34,768		$	16,235		$	857		$	403		$	15		$	56,680
Loans:
Loans individually evaluated for impairment	$	5,296		$	125,922		$	56,799		$	212		$	55		$	524		$	188,808
Loans collectively evaluated for impairment		47,271			347,874			272,460			20,171			22,262			246			710,284
Total ending loans balance	$	52,567		$	473,796		$	329,259		$	20,383		$	22,317		$	770		$	899,092
Impaired Loans
Impaired loans include restructured loans and commercial, construction, agriculture and commercial real estate loans on nonaccrual or classified as either doubtful, whereby collection of the total amount is improbable, or loss, whereby all or a portion of the loan has been written off or a specific allowance for loss has been provided.
The following table presents information related to loans individually evaluated for impairment by class of loans as of and for the three and nine months ended September 30, 2013:
										Three Months Ended						Nine Months Ended
										September 30, 2013						September 30, 2013
	Unpaid			Recorded			Allowance			Average			Interest			Average			Interest			Cash Basis
	Principal			Investment			For Loan			Recorded			Income			Recorded			Income			Income
	Balance						Losses			Investment			Recognized			Investment			Recognized			Recognized
							Allocated
	(in thousands)
With No Related Allowance Recorded:
Commercial	$	1,853		$	1,556		$	—		$	1,727		$	30		$	1,644		$	30		$	30
Commercial real estate:
Construction		311			195			—			193			153			574			164			164
Farmland		4,641			4,575			—			4,439			5			4,349			177			177
Nonfarm nonresidential		2,209			1,980			—			1,753			109			1,803			366			366
Residential real estate:
Multi-family		447			395			—			516			—			579			—			—
1-4 Family		10,953			10,078			—			10,538			33			11,896			90			90
Consumer		14			14			—			8			—			25			—			—
Agriculture		410			332			—			266			—			186			—			—
Other		18			18			—			18			—			9			—			—
With An Allowance Recorded:
Commercial		3,776			3,670			381			4,110			19			4,016			80			—
Commercial real estate:
Construction		20,462			19,316			388			20,831			10			22,900			78			—
Farmland		8,000			5,606			194			5,575			11			5,914			33			—
Nonfarm nonresidential		83,138			67,765			2,685			74,620			327			78,285			1,009			—
Residential real estate:
Multi-family		14,199			12,490			395			12,713			51			13,372			158			—
1-4 Family		28,795			26,778			651			27,283			140			27,963			358			—
Consumer		202			134			68			122			1			146			2			—
Agriculture		—			—			—			—			—			3			—			—
Other		514			515			—			516			5			520			13			—
Total	$	179,942		$	155,417		$	4,762		$	165,228		$	894		$	174,184		$	2,558		$	827
The following table presents loans individually evaluated for impairment by class of loan as of December 31, 2012:
	Unpaid			Recorded			Allowance			Average			Interest			Cash
	Principal			Investment			For Loan			Recorded			Income			Basis
	Balance						Losses			Investment			Recognized			Income
							Allocated									Recognized
	(in thousands)
With No Related Allowance Recorded:
Commercial	$	1,460		$	1,234		$	—		$	1,637		$	5		$	4
Commercial real estate:
Construction		1,155			1,109			—			1,745			2			2
Farmland		4,448			4,448			—			4,706			57			57
Nonfarm nonresidential		2,134			1,892			—			3,436			3			3
Residential real estate:
Multi-family		643			643			—			910			—			—
1-4 Family		13,539			13,158			—			11,291			56			56
Consumer		70			70			—			219			8			5
Agriculture		45			45			—			366			2			—
Other		—			—			—			—			—			—
With An Allowance Recorded:
Commercial		4,108			4,062			263			3,964			169			27
Commercial real estate:
Construction		26,645			25,455			1,543			19,514			348			5
Farmland		8,557			6,456			734			5,794			43			2
Nonfarm nonresidential		97,699			86,562			13,769			83,087			2,011			185
Residential real estate:
Multi-family		14,906			14,906			1,643			11,187			468			—
1-4 Family		31,021			28,092			2,998			27,404			787			9
Consumer		142			142			68			29			—			—
Agriculture		10			10			5			6			—			—
Other		524			524			11			533			17			—
Total	$	207,106		$	188,808		$	21,034		$	175,828		$	3,976		$	355
Troubled Debt Restructuring
A troubled debt restructuring (TDR) occurs when the Company has agreed to a loan modification in the form of a concession for a borrower who is experiencing financial difficulty. The majority of the Company’s TDRs involve a reduction in interest rate, a deferral of principal for a stated period of time, or an interest only period. All TDRs are considered impaired and the Company has allocated reserves for these loans to reflect the present value of the concessionary terms granted to the borrower.
The following table presents the types of TDR loan modifications by portfolio segment outstanding as of September 30, 2013 and December 31, 2012:
	TDRs			TDRs Not			Total
	Performing to			Performing to			TDRs
	Modified			Modified
	Terms			Terms
	(in thousands)
September 30, 2013
Commercial
Rate reduction	$	1,957		$	—		$	1,957
Principal deferral		—			875			875
Commercial Real Estate:
Construction
Rate reduction		277			6,362			6,639
Principal deferral		499			—			499
Farmland
Rate reduction		150			—			150
Principal deferral		701			2,438			3,139
Nonfarm nonresidential
Rate reduction		23,511			21,678			45,189
Interest only payments		2,448			1,489			3,937
Residential Real Estate:
Multi-family
Rate reduction		4,385			6,728			11,113
Interest only payments		644			—			644
1-4 Family
Rate reduction		8,805			9,685			18,490
Consumer
Rate reduction		77			—			77
Other
Rate reduction		514			—			514
Total TDRs	$	43,968		$	49,255		$	93,223
	TDRs			TDRs Not			Total
	Performing to			Performing to			TDRs
	Modified			Modified
	Terms			Terms
	(in thousands)
December 31, 2012
Commercial
Rate reduction	$	1,972		$	—		$	1,972
Principal deferral		887			—			887
Interest only payments		—			958			958
Commercial Real Estate:
Construction
Rate reduction		4,834			4,459			9,293
Farmland
Rate reduction		150			—			150
Principal deferral		725			2,438			3,163
Nonfarm nonresidential
Rate reduction		36,515			22,631			59,146
Principal deferral		1,195			—			1,195
Interest only payments		2,466			2,107			4,573
Residential Real Estate:
Multi-family
Rate reduction		13,087			—			13,087
Interest only payments		652			—			652
1-4 Family
Rate reduction		14,323			7,871			22,194
Consumer
Rate reduction		14			—			14
Other
Rate reduction		524			—			524
Total TDRs	$	77,344		$	40,464		$	117,808
At September 30, 2013 and December 31, 2012, 47% and 66%, respectively, of the Company’s TDRs were performing according to their modified terms. The Company allocated $3.5 million and $15.1 million in reserves to borrowers whose loan terms have been modified in TDRs as of September 30, 2013, and December 31, 2012, respectively. The Company has committed to lend additional amounts totaling $262,000 and $259,000 as of September 30, 2013 and December 31, 2012, respectively, to borrowers with outstanding loans classified as TDRs.
The following tables present a summary of the types of TDR loan modifications by portfolio type that occurred during the three months ended September 30, 2013 and 2012:
	TDRs			TDRs Not			Total
	Performing to			Performing to			TDRs
	Modified			Modified
	Terms			Terms
	(in thousands)
30-Sep-13
Residential Real Estate:
1-4 Family
Rate reduction	$	363		$	—		$	363
Consumer
Rate reduction		26			—			26
Total TDRs	$	389		$	—		$	389
	TDRs			TDRs Not			Total
	Performing to			Performing to			TDRs
	Modified			Modified
	Terms			Terms
	(in thousands)
September 30, 2012
Commercial Real Estate:
Farmland
Rate reduction	$	150		$	—		$	150
Nonfarm nonresidential
Rate reduction		5,549			—			5,549
Total TDRs	$	5,699		$	—		$	5,699
As of September 30, 2013 and 2012, 100% of the Company’s TDRs that occurred during the three months ended September 30, 2013 and 2012 were performing according to their modified terms. The Company allocated $36,000 and $489,000 in reserves to borrowers whose loan terms have been modified during the three months ended September 30, 2013 and 2012, respectively. For modifications occurring during the three month period ended September 30, 2013 and 2012, the post-modification balances approximate the pre-modification balances.
The following tables present a summary of the types of TDR loan modifications by portfolio type that occurred during the nine months ended September 30, 2013 and 2012:
	TDRs			TDRs Not			Total
	Performing to			Performing to			TDRs
	Modified			Modified
	Terms			Terms
	(in thousands)
September 30, 2013
Commercial:
Rate reduction	$	39		$	—		$	39
Commercial Real Estate:
Construction
Rate reduction		—			1,291			1,291
Principal deferral		499			—			499
Nonfarm nonresidential
Rate reduction		388			—			388
Residential Real Estate:
1-4 Family
Rate reduction		1,254			—			1,254
Consumer:
Rate reduction		64			—			64
Total TDRs	$	2,244		$	1,291		$	3,535
	TDRs			TDRs Not			Total
	Performing to			Performing to			TDRs
	Modified			Modified
	Terms			Terms
	(in thousands)
September 30, 2012
Commercial:
Interest only payments	$	—		$	1,019		$	1,019
Commercial Real Estate:
Construction
Rate reduction		—			849			849
Farmland
Rate reduction		150			—			150
Nonfarm nonresidential
Rate reduction		16,700			—			16,700
Principal deferral		1,196			—			1,196
Interest only payments		2,467			2,174			4,641
Residential Real Estate:
Multi-family
Rate reduction		12,848			31			12,879
1-4 Family
Rate reduction		7,440			—			7,440
Principal deferral		—			384			384
Total TDRs	$	40,801		$	4,457		$	45,258
As of September 30, 2013 and 2012, 63% and 90%, respectively, of the Company’s TDRs that occurred during the nine months ended September 30, 2013 and 2012, were performing according to their modified terms. The Company allocated $336,000 and $3.9 million in reserves to borrowers whose loan terms have been modified during the nine months ended September 30, 2013 and 2012, respectively. For modifications occurring during the nine month period ended September 30, 2013 and 2012, the post-modification balances approximate the pre-modification balances.
During the first nine months of 2013, approximately $1.3 million TDRs defaulted on their restructured loan within the 12 month period following the loan modification. These defaults were construction and development loans. A default is considered to have occurred once the TDR is past due 90 days or more or it has been placed on nonaccrual. During the first nine months of 2012, approximately $9.9 million TDRs defaulted on their restructured loan within the 12 month period following the loan modification. These defaults consisted of $6.9 million in commercial real estate loans, $1.2 million in commercial loans, and $1.7 million in 1-4 family residential real estate loans.
Nonperforming Loans
Nonperforming loans include impaired loans not on accrual and smaller balance homogeneous loans, such as residential mortgage and consumer loans, that are collectively evaluated for impairment.
The following table presents the recorded investment in nonaccrual and loans past due 90 days and still on accrual by class of loan as of September 30, 2013, and December 31, 2012:
	Nonaccrual						Loans Past
							Due 90 Days
							And Over Still
							Accruing
	September 30,			December 31,			September 30,			December 31,
	2013			2012			2013			2012
	(in thousands)
Commercial	$	3,084		$	2,437		$	—		$	36
Commercial Real Estate:
Construction		18,734			7,808			—			—
Farmland		9,187			10,030			—			—
Nonfarm nonresidential		40,394			46,036			—			—
Residential Real Estate:
Multi-family		7,647			1,516			—			—
1-4 Family		27,455			26,501			—			50
Consumer		71			135			—			—
Agriculture		332			54			—			—
Other		18			—			—			—
Total	$	106,922		$	94,517		$	—		$	86
The following table presents the aging of the recorded investment in past due loans as of September 30, 2013 and December 31, 2012:
	30 – 59			60 – 89			90 Days			Nonaccrual			Total
	Days			Days			And Over						Past Due
	Past Due			Past Due			Past Due						And
													Nonaccrual
	(in thousands)
September 30, 2013
Commercial	$	4,290		$	174		$	—		$	3,084		$	7,548
Commercial Real Estate:
Construction		—			—			—			18,734			18,734
Farmland		289			97			—			9,187			9,573
Nonfarm nonresidential		771			5,968			—			40,394			47,133
Residential Real Estate:
Multi-family		1,185			—			—			7,647			8,832
1-4 Family		3,267			1,219			—			27,455			31,941
Consumer		198			35			—			71			304
Agriculture		18			89			—			332			439
Other		—			—			—			18			18
Total	$	10,018		$	7,582		$	—		$	106,922		$	124,522
	30 – 59			60 – 89			90 Days			Nonaccrual			Total
	Days			Days			And Over						Past Due
	Past Due			Past Due			Past Due						And
													Nonaccrual
	(in thousands)
December 31, 2012
Commercial	$	1,279		$	90		$	36		$	2,437		$	3,842
Commercial Real Estate:
Construction		10,510			5,815			—			7,808			24,133
Farmland		922			58			—			10,030			11,010
Nonfarm non residential		5,138			13,037			—			46,036			64,211
Residential Real Estate:
Multi-family		8,762			—			—			1,516			10,278
1-4 Family		11,145			1,221			50			26,501			38,917
Consumer		310			75			—			135			520
Agriculture		153			7			—			54			214
Other		—			—			—			—			—
Total	$	38,219		$	20,303		$	86		$	94,517		$	153,125
Credit Quality Indicators
We categorize loans into risk categories at origination based upon original underwriting. Thereafter, we categorize 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, public information, and current economic trends, among other factors. Loans are analyzed individually by classifying the loans as to credit risk. This analysis includes loans with an outstanding balance greater than $500,000 and non-homogeneous loans, such as commercial and commercial real estate loans. This analysis is performed on a quarterly basis. We do not have any non-rated loans. The following definitions are used for risk ratings:
Watch – Loans classified as watch are those loans which have experienced a potentially adverse development which necessitates increased monitoring.
Special Mention – Loans classified as special mention do not have all of the characteristics of substandard or doubtful loans. They have one or more deficiencies which warrant special attention and which corrective action, such as accelerated collection practices, may remedy.
Substandard – Loans classified as substandard are those loans with clear and defined weaknesses such as a highly leveraged position, unfavorable financial ratios, uncertain repayment sources or poor financial condition which may jeopardize the repayment of the debt as contractually agreed. They are characterized by the distinct possibility we will sustain some losses if the deficiencies are not corrected.
Doubtful – Loans classified as doubtful are those loans which have characteristics similar to substandard loans but with an increased risk that collection or liquidation in full is highly questionable and improbable.
Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be “Pass” rated loans. As of September 30, 2013, and December 31, 2012, and based on the most recent analysis performed, the risk category of loans by class of loans is as follows:
	Pass			Watch			Special			Substandard			Doubtful			Total
							Mention
	(in thousands)
September 30, 2013
Commercial	$	33,519		$	8,203		$	706		$	9,100		$	44		$	51,572
Commercial Real Estate:
Construction		17,072			11,404			2,248			21,270			—			51,994
Farmland		45,172			11,568			879			15,540			—			73,159
Nonfarm nonresidential		87,574			62,363			2,982			83,414			246			236,579
Residential Real Estate:
Multi-family		15,230			15,397			—			15,425			—			46,052
1-4 Family		131,240			46,734			2,428			54,357			—			234,759
Consumer		13,845			1,079			6			779			—			15,709
Agriculture		20,853			2,125			—			691			—			23,669
Other		215			514			—			18			—			747
Total	$	364,720		$	159,387		$	9,249		$	200,594		$	290		$	734,240
	Pass			Watch			Special			Substandard			Doubtful			Total
							Mention
	(in thousands)
December 31, 2012
Commercial	$	27,085		$	10,153		$	6,495		$	8,772		$	62		$	52,567
Commercial Real Estate:
Construction		26,085			21,713			3,647			18,839			—			70,284
Farmland		47,017			13,461			3,532			16,815			—			80,825
Nonfarm nonresidential		122,603			66,223			14,955			118,635			271			322,687
Residential Real Estate:
Multi-family		18,387			14,637			—			17,962			—			50,986
1-4 Family		159,975			47,030			5,167			66,101			—			278,273
Consumer		17,232			2,211			35			842			63			20,383
Agriculture		19,256			1,467			869			725			—			22,317
Other		246			524			—			—			—			770
Total	$	437,886		$	177,419		$	34,700		$	248,691		$	396		$	899,092

Other_Real_Estate_Owned

Other Real Estate Owned	9 Months Ended
	Sep. 30, 2013
Other Real Estate Owned	'
	Note 5 – Other Real Estate Owned
	Other real estate owned (OREO) is real estate acquired as a result of foreclosure or by deed in lieu of foreclosure. It is classified as real estate owned until such time as it is sold. When property is acquired as a result of foreclosure or by deed in lieu of foreclosure, it is recorded at its fair market value less cost to sell. Any write-down of the property at the time of acquisition is charged to the allowance for loan losses. Subsequent reductions in fair value are recorded as non-interest expense. To determine the fair value of OREO for smaller dollar single family homes, we consult with internal real estate sales staff and external realtors, investors, and appraisers. If the internally evaluated market price is below our underlying investment in the property, appropriate write-downs are taken.
	For larger dollar residential and commercial real estate properties, we obtain a new appraisal of the subject property in connection with the transfer to other real estate owned. We typically obtain updated appraisals each year on the anniversary date of ownership unless a sale is imminent.
	The following table presents the major categories of OREO at the period-ends indicated:
		September 30,			December 31,
		2013			2012
		(in thousands)
	Commercial Real Estate:
	Construction	$	20,546		$	22,912
	Farmland		545			618
	Other		14,410			15,577
	Residential Real Estate:
	Multi-family		517			200
	1-4 Family		6,436			5,518
			42,454			44,825
	Valuation allowance		(597	)		(1,154	)
		$	41,857		$	43,671
		For the Three						For the Nine
		Months Ended						Months Ended
		September 30,						September 30,
		2013			2012			2013			2012
		(in thousands)						(in thousands)
	OREO Valuation Allowance Activity:
	Beginning balance	$	747		$	1,724		$	1,154		$	1,667
	Provision to allowance		300			4,260			1,584			5,090
	Write-downs		(450	)		(4,189	)		(2,141	)		(4,962	)
	Ending balance	$	597		$	1,795		$	597		$	1,795
	Net activity relating to other real estate owned during the nine months ended September 30, 2013 and 2012 is as follows:
		2013			2012
		(in thousands)
	OREO Activity
	OREO as of January 1	$	43,671		$	41,449
	Real estate acquired		18,542			31,531
	Valuation adjustments for declining market values		(1,584	)		(5,090	)
	Improvements		—			1
	Loss on sale		(190	)		(1,481	)
	Proceeds from sale of properties		(18,582	)		(17,573	)
	OREO as of September 30	$	41,857		$	48,837
	Expenses related to other real estate owned include:
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013			2012
		(in thousands)						(in thousands)
	Net loss (gain) on sales	$	(169	)	$	533		$	190		$	1,481
	Provision to allowance		300			4,260			1,584			5,090
	Operating expense		538			411			1,343			1,095
	Total	$	669		$	5,204		$	3,117		$	7,666

Deposits

Deposits	9 Months Ended
	Sep. 30, 2013
Deposits	'
	Note 6 – Deposits
	The following table shows deposits by category:
		September 30,		December 31,
		2013		2012
		(in thousands)
	Non-interest bearing	$	101,191	$	114,310
	Interest checking		71,851		87,234
	Money market		77,292		63,715
	Savings		37,622		39,227
	Certificates of deposit		658,940		760,573
	Total	$	946,896	$	1,065,059
	Time deposits of $100,000 or more were $279.3 million and $319.5 million at September 30, 2013 and December 31, 2012, respectively.
	Scheduled maturities of total time deposits at September 30, 2013 are as follows (in thousands):
	Year 1	$	378,763
	Year 2		236,022
	Year 3		25,836
	Year 4		10,350
	Year 5		7,930
	Thereafter		39
		$	658,940
	Historically, the Bank used brokered and wholesale deposits to supplement its funding strategy. At December 31, 2012, the Bank held $15.0 million in brokered deposits, which matured and were redeemed in the second quarter of 2013. As stipulated in the Consent Order, PBI Bank is currently restricted from accepting, renewing, or rolling-over brokered deposits without the prior receipt of a waiver on a case-by-case basis from our regulators.

Advances_from_the_Federal_Home

Advances from the Federal Home Loan Bank	9 Months Ended
	Sep. 30, 2013
Advances from the Federal Home Loan Bank	'
	Note 7 – Advances from the Federal Home Loan Bank
	Advances from the Federal Home Loan Bank were as follows:
		September 30,		December 31,
		2013		2012
		(in thousands)
	Monthly amortizing advances with fixed rates from 0.00% to 5.25% and maturities ranging from 2013 through 2033, averaging 3.13% for 2013	$	4,741	$	5,604
	Each advance is payable per terms on agreement, with a prepayment penalty. The advances are collateralized by first mortgage loans. The borrowing capacity is based on the market value of the underlying pledged loans rather than the unpaid principal balance of the pledged loans. At September 30, 2013, our additional borrowing capacity with the FHLB was $16.4 million. The availability of our borrowing capacity could be affected by our financial position and the FHLB could require additional collateral or, among other things, exercise its right to deny a funding request, at its discretion. Additionally, any new advances are limited to a one year maturity or less.

Fair_Values_Measurement

Fair Values Measurement	9 Months Ended
	Sep. 30, 2013
Fair Values Measurement	'
	Note 8 – Fair Values Measurement
	Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. We use various valuation techniques to determine fair value, including market, income and cost approaches. There are three levels of inputs that may be used to measure fair values:
	Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets an entity has the ability to access as of the measurement date, or observable inputs.
	Level 2: Significant other observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, and other inputs that are observable or can be corroborated by observable market data.
	Level 3: Significant unobservable inputs that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability.
	In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. When that occurs, we classify the fair value hierarchy on the lowest level of input that is significant to the fair value measurement. We used the following methods and significant assumptions to estimate fair value.
	Securities: The fair values of securities available for sale are determined by obtaining quoted prices on nationally recognized securities exchanges, if available. This valuation method is classified as Level 1 in the fair value hierarchy. For securities where quoted prices are not available, fair values are calculated on market prices of similar securities, or matrix pricing, which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other benchmark quoted securities. Matrix pricing relies on the securities’ relationship to similarly traded securities, benchmark curves, and the benchmarking of like securities. Matrix pricing utilizes observable market inputs such as benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, reference data, and industry and economic events. In instances where broker quotes are used, these quotes are obtained from market makers or broker-dealers recognized to be market participants. This valuation method is classified as Level 2 in the fair value hierarchy. For securities where quoted prices or market prices of similar securities are not available, fair values are calculated using discounted cash flows or other market indicators. This valuation method is classified as Level 3 in the fair value hierarchy. Discounted cash flows are calculated using spread to swap and LIBOR curves that are updated to incorporate loss severities, volatility, credit spread and optionality. During times when trading is more liquid, broker quotes are used (if available) to validate the model. Rating agency and industry research reports as well as defaults and deferrals on individual securities are reviewed and incorporated into the calculations.
	Impaired Loans: An impaired loan is evaluated at the time the loan is identified as impaired and is recorded at fair value less costs to sell. Fair value is measured based on the value of the collateral securing the loan and is classified as Level 3 in the fair value hierarchy. Fair value is determined using several methods. Generally, the fair value of real estate is determined based on appraisals by qualified licensed appraisers. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach.
	Adjustments are routinely made in the appraisal process by the appraisers to adjust for differences between the comparable sales and income data available. These routine adjustments are made to adjust the value of a specific property relative to comparable properties for variations in qualities such as location, size, and income production capacity relative to the subject property of the appraisal. Such adjustments are typically significant and result in a Level 3 classification of the inputs for determining fair value.
	We routinely apply an internal discount to the value of appraisals used in the fair value evaluation of our impaired loans. The deductions to the appraisal take into account changing business factors and market conditions, as well as potential value impairment in cases where the date of the appraisal of the collateral predates a likely change in market conditions. These deductions range from 10% for routine real estate collateral to 30% for real estate that is determined (1) to have a thin trading market or (2) to be for unique use. This is in addition to estimated discounts for cost to sell of ten percent.
	We also apply discounts to the expected fair value of collateral for impaired loans where the likely resolution involves litigation of foreclosure. Resolution of this nature generally results in receiving lower values for real estate collateral in a more aggressive sales environment. We have utilized discounts ranging from 10% to 33% in our impairment evaluations when applicable.
	Impaired loans are evaluated quarterly for additional impairment. We obtain updated appraisals on properties securing our loans when circumstances are warranted such as at the time of renewal or when market conditions have significantly changed. This determination is made on a property-by-property basis in light of circumstances in the broader economic climate and our assessment of deterioration of real estate values in the market in which the property is located. The first stage of our assessment involves management’s inspection of the property in question. Management also engages in conversations with local real estate professionals, investors, and market makers to determine the likely marketing time and value range for the property. The second stage involves an assessment of current trends in the regional market. After thorough consideration of these factors, management will either internally evaluate fair value or order a new appraisal.
	Other Real Estate Owned (OREO): OREO is evaluated at the time of acquisition and recorded at fair value as determined by independent appraisal or internal market evaluation less cost to sell. Our quarterly evaluations of OREO for impairment are driven by property type. For smaller dollar single family homes, we consult with internal real estate sales staff and external realtors, investors, and appraisers. Based on these consultations, we determine asking prices for OREO properties we are marketing for sale. If the internally evaluated fair value is below our recorded investment in the property, appropriate write-downs are taken.
	For larger dollar commercial real estate properties, we obtain a new appraisal of the subject property in connection with the transfer to other real estate owned. In some of these circumstances, an appraisal is in process at quarter end, and we must make our best estimate of fair value based on our internal evaluation of the property, review of the most recent appraisal, and discussions with the currently engaged appraiser. We typically obtain updated appraisals on the anniversary date of ownership unless a sale is imminent.
	We routinely apply an internal discount to the value of appraisals used in the fair value evaluation of our OREO. The deductions to the appraisal take into account changing business factors and market conditions, as well as potential value impairment in cases where our appraisal date predates a likely change in market conditions. These deductions range from 10% for routine real estate to 30% for real estate that is determined (1) to have a thin trading market or (2) to be for unique use. This is in addition to estimated discounts for cost to sell of ten percent.
	Financial assets measured at fair value on a recurring basis at September 30, 2013 and December 31, 2012 are summarized below:
				Fair Value Measurements at September 30, 2013 Using
				(in thousands)
	Description	Carrying		Quoted Prices In			Significant Other			Significant
		Value		Active Markets for			Observable Inputs			Unobservable
				Identical Assets			(Level 2)			Inputs
				(Level 1)						(Level 3)
	Available-for-sale securities
	U.S. Government and federal agency	$	27,913	$	—		$	27,913		$	—
	Agency mortgage-backed: residential		84,573		—			84,573			—
	State and municipal		57,147		—			57,147			—
	Corporate bonds		23,565		—			23,565			—
	Other debt securities		606		—			—			606
	Equity securities		177		177			—			—
	Total	$	193,981	$	177		$	193,198		$	606
				Fair Value Measurements at December 31, 2012 Using
				(in thousands)
	Description	Carrying		Quoted Prices In			Significant Other			Significant
		Value		Active Markets for			Observable			Unobservable
				Identical Assets			Inputs			Inputs
				(Level 1)			(Level 2)			(Level 3)
	Available-for-sale securities
	U.S. Government and federal agency	$	6,133	$	—		$	6,133		$	—
	Agency mortgage-backed: residential		95,182		—			95,182			—
	State and municipal		54,733		—			54,733			—
	Corporate bonds		19,964		—			19,964			—
	Other debt securities		618		—			—			618
	Equity securities		1,846		1,846			—			—
	Total	$	178,476	$	1,846		$	176,012		$	618
	There were no transfers between Level 1 and Level 2 during 2013 or 2012.
	The table below presents a reconciliation of all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the periods ended September 30, 2013 and 2012:
		State and Municipal					Other Debt
		Securities					Securities
		2013		2012			2013			2012
		(in thousands)
	Balances of recurring Level 3 assets at January 1	$	—	$	1,173		$	618		$	606
	Total gain (loss) for the period:
	Included in other comprehensive income (loss)		—		—			(12	)		(11	)
	Sales		—		(1,173	)		—			—
	Balance of recurring Level 3 assets at September 30	$	—	$	—		$	606		$	595
	Level 3 state and municipal securities valuations are supported by analysis prepared by an independent third party. Their approach to determining fair value involves using recently executed transactions for similar securities and market quotations for similar securities. As securities of this type are not rated by the rating agencies and trading volumes are thin, it was determined these were valued using Level 3 inputs. We sold our Level 3 municipal securities in the second quarter of 2012 and had no securities of this nature at September 30, 2013.
	Our other debt security valuation is determined internally by calculating discounted cash flows using the security’s coupon rate of 6.5% and an estimated current market rate of 11.0% based upon the current yield curve plus spreads that adjust for volatility, credit risk, and optionality. We also consider the issuer’s publicly filed financial information as well as assumptions regarding the likelihood of deferrals and defaults.
	Financial assets measured at fair value on a non-recurring basis are summarized below:
				Fair Value Measurements at September 30, 2013 Using
				(in thousands)
	Description	Carrying		Quoted Prices In			Significant Other			Significant
		Value		Active Markets for			Observable Inputs			Unobservable
				Identical Assets			(Level 2)			Inputs
		(Level 1)					(Level 3)
Impaired loans:
Commercial	$	3,289	$	—		$	—		$	3,289
Commercial real estate:
Construction		18,928		—			—			18,928
Farmland		5,412		—			—			5,412
Other		65,080		—			—			65,080
Residential real estate:
Multi-family		12,095		—			—			12,095
1-4 Family		26,127		—			—			26,127
Consumer		66		—			—			66
Other		515		—			—			515
Other real estate owned, net:
Commercial real estate:
Construction		20,257		—			—			20,257
Farmland		537		—			—			537
Other		14,208		—			—			14,208
Residential real estate:
Multi-family		509		—			—			509
1-4 Family		6,346		—			—			6,346
			Fair Value Measurements at December 31, 2012 Using
			(in thousands)
Description	Carrying		Quoted Prices In			Significant Other			Significant
	Value		Active Markets for			Observable Inputs			Unobservable
			Identical Assets			(Level 2)			Inputs
			(Level 1)						(Level 3)
Impaired loans:
Commercial	$	3,799	$	—		$	—		$	3,799
Commercial real estate:
Construction		23,912		—			—			23,912
Farmland		5,722		—			—			5,722
Other		72,793		—			—			72,793
Residential real estate:
Multi-family		13,263		—			—			13,263
1-4 Family		25,094		—			—			25,094
Consumer		74		—			—			74
Agriculture		5		—			—			5
Other		513		—			—			513
Other real estate owned, net:
Commercial real estate:
Construction		22,323		—			—			22,323
Farmland		602		—			—			602
Other		15,175		—			—			15,175
Residential real estate:
Multi-family		195		—			—			195
1-4 Family		5,376		—			—			5,376
Impaired loans, which are measured for impairment using the fair value of the collateral for collateral dependent loans, had a carrying amount of $136.3 million at September 30, 2013 with a valuation allowance of $4.8 million. This resulted in no additional provision for loan losses for the nine months ended September 30, 2013. At December 31, 2012, impaired loans had a carrying amount of $166.2 million, with a valuation allowance of $21.0 million.
Other real estate owned, which is measured at the lower of carrying or fair value less estimated costs to sell, had a net carrying amount of $41.9 million as of September 30, 2013, compared with $43.7 million at December 31, 2012. Fair value write-downs of $1.6 million were recorded on other real estate owned for the nine months ended September 30, 2013.
The following table presents qualitative information about level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at September 30, 2013:
	Fair Value		Valuation		Unobservable Input(s)	Range (Weighted
			Technique(s)			Average)
	(in thousands)
Impaired loans – Commercial	$	3,289	Market value approach		Adjustment for receivables and inventory discounts	16% -32%(24%)
Impaired loans – Commercial real estate	$	89,420	Sales comparison approach		Adjustment for differences between the comparable sales	0% - 69%(20%)
Impaired loans – Residential real estate	$	38,222	Sales comparison approach		Adjustment for differences between the comparable sales	0% - 50%(15%)
Other real estate owned – Commercial real estate	$	35,002	Sales comparison approach		Adjustment for differences between the comparable sales	3% - 51%(21%)
			Income approach		Discount or capitalization rate	7% - 16%(11%)
Other real estate owned – Residential real estate	$	6,855	Sales comparison approach		Adjustment for differences between the comparable sales	4% - 34%(12%)
The following table presents qualitative information about level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2012:
	Fair Value		Valuation		Unobservable Input(s)	Range (Weighted
			Technique(s)			Average)
	(in thousands)
Impaired loans – Commercial	$	3,799	Market value approach		Adjustment for receivables and inventory discounts	16% -32%(24%)
Impaired loans – Commercial real estate	$	89,461	Sales comparison approach		Adjustment for differences between the comparable sales	0% - 69%(19%)
Impaired loans – Residential real estate	$	38,357	Sales comparison approach		Adjustment for differences between the comparable sales	0% - 38%(15%)
Other real estate owned – Commercial real estate	$	38,100	Sales comparison approach		Adjustment for differences between the comparable sales	3% - 50%(18%)
			Income approach		Discount or capitalization rate	9% - 16%(12%)
Other real estate owned – Residential real estate	$	5,571	Sales comparison approach		Adjustment for differences between the comparable sales	0% - 30%(9%)
Carrying amount and estimated fair values of financial instruments were as follows for the periods indicated:
			Fair Value Measurements at September 30, 2013 Using
	Carrying		Level 1			Level 2			Level 3			Total
	Amount
	(in thousands)
Financial assets
Cash and cash equivalents	$	53,433	$	44,674		$	8,759		$	—		$	53,433
Securities available for sale		193,981		177			193,198			606			193,981
Federal Home Loan Bank stock		10,072		N/A			N/A			N/A			N/A
Mortgage loans held for sale		123		—			123			—			123
Loans, net		702,486		—			—			719,094			719,094
Accrued interest receivable		3,964		—			1,198			2,766			3,964
Financial liabilities
Deposits	$	946,896	$	98,885		$	848,738		$	—		$	947,623
Securities sold under agreements to repurchase		3,722		—			3,722			—			3,722
Federal Home Loan Bank advances		4,741		—			4,743			—			4,743
Subordinated capital notes		6,075		—			—			5,789			5,789
Junior subordinated debentures		25,000		—			—			13,550			13,550
Accrued interest payable		2,375		—			1,037			1,338			2,375
			Fair Value Measurements at December 31, 2012 Using
	Carrying		Level 1			Level 2			Level 3			Total
	Amount
	(in thousands)
Financial assets
Cash and cash equivalents	$	49,572	$	41,938		$	7,634		$	—		$	49,572
Securities available for sale		178,476		1,846			176,012			618			178,476
Federal Home Loan Bank stock		10,072		N/A			N/A			N/A			N/A
Mortgage loans held for sale		507		—			507			—			507
Loans, net		842,412		—			—			853,996			853,996
Accrued interest receivable		5,138		—			1,150			3,988			5,138
Financial liabilities
Deposits	$	1,065,059	$	114,310		$	955,216		$	—		$	1,069,526
Securities sold under agreements to repurchase		2,634		—			2,634			—			2,634
Federal Home Loan Bank advances		5,604		—			5,607			—			5,607
Subordinated capital notes		6,975		—			—			6,599			6,599
Junior subordinated debentures		25,000		—			—			13,821			13,821
Accrued interest payable		2,104		—			1,173			931			2,104
The methods and assumptions, not previously presented, used to estimate fair values are described as follows:
(a) Cash and Cash Equivalents
The carrying amounts of cash and short-term instruments approximate fair values and are classified as either Level 1 or Level 2. Non-interest bearing deposits are Level 1 whereas interest bearing due from bank accounts and fed funds sold are Level 2.
(b) FHLB Stock
It is not practical to determine the fair value of FHLB stock due to restrictions placed on its transferability.
(c) Loans, Net
Fair values of loans, excluding loans held for sale, are estimated as follows: For variable rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values resulting in a Level 3 classification. Fair values for other loans are estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality resulting in a Level 3 classification. Impaired loans are valued at the lower of cost or fair value as described previously. The methods utilized to estimate the fair value of loans do not necessarily represent an exit price.
(d) Mortgage Loans Held for Sale
The fair value of loans held for sale is estimated based upon binding contracts and quotes from third party investors resulting in a Level 2 classification.
(e) Deposits
The fair values disclosed for non-interest bearing deposits are, by definition, equal to the amount payable on demand at the reporting date resulting in a Level 1 classification. The carrying amounts of variable rate interest bearing deposits approximate their fair values at the reporting date resulting in a Level 2 classification. Fair values for fixed rate interest bearing deposits are estimated using a discounted cash flows calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits resulting in a Level 2 classification.
(f) Securities Sold Under Agreements to Repurchase
The carrying amounts of borrowings under repurchase agreements approximate their fair values resulting in a Level 2 classification.
(g) Other Borrowings
The fair values of the Company’s FHLB advances are estimated using discounted cash flow analyses based on the current borrowing rates resulting in a Level 2 classification.
The fair values of the Company’s subordinated capital notes and junior subordinated debentures are estimated using discounted cash flow analyses based on the current borrowing rates for similar types of borrowing arrangements resulting in a Level 3 classification.
(h) Accrued Interest Receivable/Payable
The carrying amounts of accrued interest approximate fair value resulting in a Level 2 or Level 3 classification based on the level of the asset or liability with which the accrual is associated.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Taxes	'
	Note 9 – Income Taxes
	Deferred tax assets and liabilities were due to the following as of:
		September 30,			December 31,
		2013			2012
		(in thousands)
	Deferred tax assets:
	Net operating loss carry-forward	$	25,993		$	15,051
	Allowance for loan losses		11,114			19,838
	Other real estate owned write-down		9,854			10,408
	Alternative minimum tax credit carry-forward		692			692
	Net assets from acquisitions		635			592
	Other than temporary impairment on securities		374			374
	Net unrealized loss on securities available for sale		968			—
	New market tax credit carry-forward		208			208
	Amortization of non-compete agreements		17			19
	Other		981			936
			50,836			48,118
	Deferred tax liabilities:
	FHLB stock dividends		1,276			1,276
	Fixed assets		322			409
	Originated mortgage servicing rights		81			98
	Net unrealized gain on securities available for sale		—			1,858
	Other		498			549
			2,177			4,190
	Net deferred tax assets before valuation allowance		48,659			43,928
	Valuation allowance		(48,659	)		(43,928	)
	Net deferred tax asset	$	—		$	—
	Our estimate of the realizability of the deferred tax asset depends on our estimate of projected future levels of taxable income as all carryback ability was fully absorbed by our tax loss of approximately $40 million for 2011. In analyzing future taxable income levels, we considered all evidence currently available, both positive and negative. Based on our analysis, we continue to maintain a valuation allowance for all deferred tax assets as of September 30, 2013. Our deferred tax assets and the related valuation allowance are analyzed and adjusted on a quarterly basis.
	The Company does not have any beginning and ending unrecognized tax benefits. The Company does not expect the total amount of unrecognized tax benefits to significantly increase or decrease in the next twelve months. There were no interest and penalties recorded in the income statement or accrued for the nine months ended September 30, 2013 or the year ended December 31, 2012 related to unrecognized tax benefits.
	The Company and its subsidiaries are subject to U.S. federal income tax and the Company is subject to income tax in the Commonwealth of Kentucky. The Company is no longer subject to examination by taxing authorities for years before 2009.

Stock_Plans_and_Stock_Based_Co

Stock Plans and Stock Based Compensation	9 Months Ended
	Sep. 30, 2013
Stock Plans and Stock Based Compensation	'
	Note 10 – Stock Plans and Stock Based Compensation
	The Company has two stock incentive plans. On February 23, 2006, the Company adopted the Porter Bancorp, Inc. 2006 Stock Incentive Plan. In May 2013, the Board approved an amendment to the plan to increase the number of shares authorized for issuance by 800,000 shares. The 2006 Plan now permits the issuance of up to 1,263,050 shares of the Company’s common stock upon the exercise of stock options or upon the grant of stock awards. As of September 30, 2013, the Company had granted 793,095 unvested shares net of forfeitures and vesting under the stock incentive plan. Shares issued under the plan vest annually on the anniversary date of the grant over three to ten years. The Company has 343,829 shares remaining available for issue under the plan.
	On May 15, 2006, the Board of Directors approved the Porter Bancorp, Inc. 2006 Non-Employee Directors Stock Ownership Incentive Plan, which was approved by holders of the Company’s voting common stock on June 8, 2006. On May 22, 2008, shareholders voted to amend the plan to change the form of incentive award from stock options to unvested shares. Under the terms of the plan, 100,000 shares are reserved for issuance to non-employee directors upon the exercise of stock options or upon the grant of unvested stock awards granted under the plan. Prior to the amendment, options were granted automatically under the plan at fair market value on the date of grant. The options vest over a three-year period and have a five year term. Unvested shares are granted automatically under the plan at fair market value on the date of grant and vest semi-annually on the anniversary date of the grant over three years.
	On May 16, 2012, holders of the Company’s voting common stock voted to further amend the 2006 Non-Employee Directors Stock Ownership Incentive Plan to award restricted shares having a fair market value of $25,000 annually to each non-employee director, and to increase the number of shares issuable under the Directors’ Plan from 100,000 shares to 400,000 shares. Shares issued under the amended plan vest on December 31 in the year they are granted.
	To date, the Company has issued 245,909 unvested shares, net of forfeitures and vesting, to non-employee directors. At September 30, 2013, 113,357 shares remain available for issuance under this plan.
	The fair value of the 2013 unvested shares issued to certain employees was $820,000, or $1.18 per weighted-average share. The fair value of the 2013 unvested shares issued to the directors was $155,000 or $0.85 per weighted average share. The Company recorded $391,000 and $338,000 of stock-based compensation during the first nine months of 2013 and 2012, respectively, to salaries and employee benefits. There was no significant impact on compensation expense resulting from forfeited or expiring shares. We expect substantially all of the unvested shares outstanding at the end of the period will vest according to the vesting schedule. No deferred tax benefit was recognized related to this expense for either period.
	The following table summarizes unvested share activity as of and for the periods indicated for the Stock Incentive Plan:
		Nine Months Ended					Twelve Months Ended
		September 30, 2013					December 31, 2012
		Shares			Weighted		Shares			Weighted
					Average					Average
					Grant					Grant
					Price					Price
	Outstanding, beginning		153,316		$	5.92		96,688		$	13.4
	Granted		693,214			1.18		97,197			1.74
	Vested		(22,113	)		12.19		(27,362	)		13.04
	Forfeited		(31,322	)		6.84		(13,207	)		15.22
	Outstanding, ending		793,095		$	1.57		153,316		$	5.92
	The following table summarizes unvested share activity as of and for the periods indicated for the Non-Employee Directors Stock Ownership Incentive Plan:
		Nine Months Ended					Twelve Months Ended
		September 30, 2013					December 31, 2012
		Shares			Weighted		Shares			Weighted
					Average					Average
					Grant					Grant
					Price					Price
	Outstanding, beginning		80,078		$	1.77		3,538		$	7.91
	Granted		182,355			0.85		93,943			1.65
	Vested		(16,524	)		2.02		(17,403	)		2.37
	Forfeited		—			—		—			—
	Outstanding, ending		245,909		$	1.07		80,078		$	1.77
	As of September 30, 2013, all stock options issued to non-employee directors had expired and none were exercised during their grant term. The Company’s stock-based incentive awards have exclusively been restricted stock grants since 2008.
	The following table summarizes stock option activity:
		Nine Months Ended					Twelve Months Ended
		September 30, 2013					December 31, 2012
		Shares			Weighted		Shares			Weighted
					Average					Average
					Exercise					Exercise
					Price					Price
	Outstanding, beginning		—		$	—		29,530		$	19.88
	Forfeited		—			—		—			—
	Expired		—			—		(29,530	)		19.88
	Outstanding, ending		—		$	—		—		$	—
	No options were issued, outstanding, or exercised during the first nine months of 2013. The Company recorded no stock option compensation expense during the nine months ended September 30, 2013. No options were modified during the period. As of September 30, 2013, no stock options issued by the Company had been exercised, and all granted options had expired.
	Unrecognized stock based compensation expense related to unvested shares for the remainder of 2013 and beyond is estimated as follows (in thousands):
	October 2013 – December 2013	$	216
	2014		522
	2015		397
	2016		240
	2017 & thereafter		41

Earnings_Loss_per_Share

Earnings (Loss) per Share	9 Months Ended
	Sep. 30, 2013
Earnings (Loss) per Share	'
	Note 11 – Earnings (Loss) per Share
	The factors used in the basic and diluted earnings per share computations follow:
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013			2012
		(in thousands, except share and per share data)
	Net income (loss)	$	298		$	(27,732	)	$	(1,080	)	$	(26,079	)
	Less:
	Preferred stock dividends		437			437			1,311			1,312
	Accretion of Series A preferred stock discount		45			44			135			134
	Earnings (loss) allocated to unvested shares		(11	)		(501	)		(107	)		(345	)
	Earnings (loss) allocated to Series C preferred		(5	)		(763	)		(67	)		(750	)
	Net income (loss) allocated to common shareholders, basic and diluted	$	(168	)	$	(26,949	)	$	(2,352	)	$	(26,430	)
	Basic
	Weighted average common shares including unvested common shares outstanding		12,702,627			12,303,217			12,569,514			12,219,035
	Less: Weighted average unvested common shares		776,774			218,505			535,224			153,306
	Less: Weighted average Series C preferred		332,894			332,894			332,894			332,894
	Weighted average common shares outstanding		11,592,959			11,751,818			11,701,396			11,732,835
	Basic earnings (loss) per common share	$	(0.01	)	$	(2.29	)	$	(0.20	)	$	(2.25	)
	Diluted
	Add: Dilutive effects of assumed exercises of common and Preferred Series C stock warrants		—			—			—			—
	Weighted average common shares and potential common shares		11,592,959			11,751,818			11,701,396			11,732,835
	Diluted earnings (loss) per common share	$	(0.01	)	$	(2.29	)	$	(0.20	)	$	(2.25	)
	The Company had no outstanding stock options at September 30, 2013. A warrant for the purchase of 330,561 shares of the Company’s common stock at an exercise price of $15.88 was outstanding at September 30, 2013 and 2012 but was not included in the diluted EPS computation as inclusion would have been anti-dilutive. Additionally, warrants for the purchase of 1,449,459 shares of non-voting common stock at an exercise price of $11.50 per share were outstanding at September 30, 2013 and 2012, but were not included in the diluted EPS computation as inclusion would have been anti-dilutive.

Capital_Requirements_and_Restr

Capital Requirements and Restrictions on Retained Earnings	9 Months Ended
	Sep. 30, 2013
Capital Requirements and Restrictions on Retained Earnings	'
	Note 12 – Capital Requirements and Restrictions on Retained Earnings
	Banks and bank holding companies are subject to regulatory capital requirements administered by federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations involve quantitative measures of assets, liabilities, and certain off-balance-sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet capital requirements can result in regulatory action.
	On June 24, 2011, PBI Bank entered into a Consent Order with the FDIC and the Kentucky Department of Financial Institutions. The consent order required the Bank to complete a management study, to maintain Tier 1 capital as a percentage of total assets of at least 9% and a total risk based capital ratio of at least 12%, to develop a plan to reduce our risk position in each substandard asset in excess of $1 million, to complete board review of the adequacy of the allowance for loan losses prior to quarterly Call Report submissions, to adopt procedures which strengthen the loan review function and ensure timely and accurate grading of credit relationships, to charge-off all assets classified as loss, to develop a plan to reduce concentrations of construction and development loans to not more than 75% of total risk based capital and non-owner occupied commercial real estate loans to not more than 250% of total risk based capital, to limit asset growth to no more than 5% in any quarter or 10% annually, to not extend additional credit to any borrower classified substandard without specific advance board authorization, and to not declare or pay any dividend without the prior consent of our regulators. We are also restricted from accepting, renewing, or rolling-over brokered deposits without the prior receipt of a waiver on a case-by-case basis from our regulators.
	On September 21, 2011, we entered into a Written Agreement with the Federal Reserve Bank of St. Louis. Pursuant to the Agreement, we made formal commitments to use our financial and management resources to serve as a source of strength for the Bank and to assist the Bank in addressing weaknesses identified by the FDIC and the KDFI, to pay no dividends without prior written approval, to pay no interest or principal on subordinated debentures or trust preferred securities without prior written approval, and to submit an acceptable plan to maintain sufficient capital.
	In October 2012, PBI Bank entered into a new consent order with the FDIC and KDFI. The new consent order requires the Bank to maintain a minimum Tier 1 leverage ratio of 9% and a minimum total risk based capital ratio of 12%. The Bank also agreed if it should be unable to reach the required capital levels, and if directed in writing by the FDIC, then the Bank would within 30 days develop, adopt and implement a written plan to sell or merge itself into another federally insured financial institution or otherwise immediately obtain a sufficient capital investment into the Bank to fully meet the capital requirements. We expect to continue to work with our regulators toward capital ratio compliance as outlined in the written capital plan previously submitted by the Bank. The new consent order also requires the Bank to continue to adhere to the plans implemented in response to the June 2011 consent order, and includes the substantive provisions of the June 2011 consent order.
	The following table shows the ratios of Tier 1 capital and total capital to risk-adjusted assets and the leverage ratios for Porter Bancorp, Inc. and PBI Bank at the dates indicated:
											September 30, 2013						December 31, 2012
		Regulatory			Well-Capitalized			Minimum Capital			Porter			PBI			Porter			PBI
		Minimums			Minimums			Ratios Under			Bancorp			Bank			Bancorp			Bank
								Consent Order
	Tier 1 Capital		4	%		6	%		N/A			7.19	%		8.94	%		6.46	%		7.71	%
	Total risk-based capital		8			10			12	%		10.78			11.04			9.81			9.82
	Tier 1 leverage ratio		4			5			9			5.15			6.4			4.5			5.37
	At September 30, 2013, PBI Bank’s Tier 1 leverage ratio was 6.40%, and its total risk-based capital ratio was 11.04%, both of which are below the minimum capital ratios required by the Consent Order. Failure to meet minimum capital requirements could result in additional discretionary actions by regulators that, if undertaken, could have a materially adverse effect on our financial condition.
	Kentucky banking laws limit the amount of dividends that may be paid to a holding company by its subsidiary banks without prior approval. These laws limit the amount of dividends that may be paid in any calendar year to current year’s net income, as defined in the laws, combined with the retained net income of the preceding two years, less any dividends declared during those periods. PBI Bank has agreed with its primary regulators to obtain their written consent prior to declaring or paying any future dividends. As a practical matter, PBI Bank cannot pay dividends to Porter Bancorp for the foreseeable future.

Contingencies

Contingencies	9 Months Ended
	Sep. 30, 2013
Contingencies	'
	Note 13 – Contingencies
	In the normal course of operations, we are defendants in various legal proceedings. Litigation is subject to inherent uncertainties and unfavorable rulings could occur. We record contingent liabilities resulting from claims against us when a loss is assessed to be probable and the amount of the loss is reasonably estimable. Assessing probability of loss and estimating probable losses requires analysis of multiple factors, including in some cases judgments about the potential actions of third party claimants and courts. Recorded contingent liabilities are based on the best information available and actual losses in any future period are inherently uncertain. Currently, we have accrued approximately $1.8 million related to ongoing litigation matters for which we believe liability is probable and reasonably estimable. Accruals are not made in cases where liability is not probable or the amount cannot be reasonably estimated. We provide disclosure of matters where we believe liability is reasonably possible and which may be material to our consolidated financial statements.
	Signature Point Litigation. As disclosed previously, on June 18, 2010, three real estate development companies filed suit in Kentucky state court against PBI Bank and Managed Assets of Kentucky (“MAKY”). Signature Point Condominiums LLC, et al. v. PBI Bank, et al., Jefferson Circuit Court, Case No 10-CI-04295. On July 16, 2013, a jury in Louisville, Kentucky returned a verdict against PBI Bank, awarding the plaintiffs compensatory damages of $1,515,000 and punitive damages of $5,500,000. The case arose from a settlement in which PBI Bank agreed to release the plaintiffs and guarantors from obligations of more than $26 million related to a real estate project in Louisville. The plaintiffs were granted a right of first refusal to repurchase a tract of land within the project. In exchange, the plaintiffs conveyed the real estate securing the loans to PBI Bank. After plaintiffs declined to exercise their right of first refusal, PBI Bank sold the tract to the third party. Plaintiffs alleged the Bank had knowledge of the third party offer before the conveyance of the land by the Plaintiffs to the Bank. Plaintiffs asserted claims of fraud, breach of fiduciary duty, breach of the duty of good faith and fair dealing, tortious interference with prospective business advantage and conspiracy to commit fraud, negligence, and conspiracy against PBI Bank.
	After conferring with its legal advisors, PBI Bank believes the findings and damages are excessive and contrary to law, and that it has meritorious grounds on which it is moving forward to appeal. We will continue to defend this matter vigorously. Although we have made provisions in our condensed consolidated financial statements for this self-insured matter, the amount of our legal reserve is less than the original amount of the damages awarded, plus accrued interest. The ultimate outcome of this matter could have a material adverse effect on our financial condition, results of operations or cash flows.
	SBAV LP Litigation. In 2010, the Company sold common shares, convertible preferred shares and warrants to purchase common shares to accredited investors for $32 million in a private placement. In the placement, SBAV LP, an affiliate of Clinton Group, Inc. (“CGI”) purchased common shares and warrants for $5,000,016.
	On July 11, 2011, CGI sent a letter to the Company, which was also attached as an exhibit to a Schedule 13D CGI filed with the Securities and Exchange Commission on the same date. In its letter CGI questioned the Company’s executive leadership team’s ability to properly manage the Bank’s operations, compliance with GAAP, financial disclosures and relationships with regulators, referencing the consent order PBI Bank entered into with the Federal Deposit Insurance Corporation and the Commonwealth of Kentucky Department of Financial Institutions on June 24, 2011. CGI also stated its belief “that it is likely that a number of representations and warranties made when the CGI affiliate entered into an agreement to purchase shares were false,” and demanded that the Company take immediate steps to “redress such breaches and make CGI and the other purchasers whole.”
	During the third quarter of 2011, the Company’s Risk Policy and Oversight Committee, comprised of independent directors, undertook an investigation of the allegations raised in the CGI 13D to evaluate their merit and to ascertain the reasonableness of the Bank’s allowance for loan losses and OREO valuations at the time of Clinton’s investment. The Oversight Committee reported its conclusions to the Company’s Board of Directors in October 2011. While recognizing that opportunities for procedural improvements existed in the Bank’s lending and non-performing asset administration, the Oversight Committee concluded that this did not rise to a level that would result in the financial statements, or representations and warranties with respect to the financial statements, being misleading to investors in the 2010 private placement offering of the Company’s stock. The Oversight Committee further concluded investors were afforded ample opportunity and access to information for their due diligence, including documentation involving asset valuation estimates, on-site management discussions and additional inquiries during visits to the Company headquarters, and access to loan files of their choosing and the appraisals contained therein, and the Company’s disclosures were adequate in all material respects.
	On January 30, 2012, CGI delivered a demand to inspect the Company’s records pursuant to the Kentucky Business Corporation Act. The Company provided records to CGI in accordance with Kentucky law.
	On December 17, 2012, SBAV LP filed a lawsuit against Porter Bancorp, PBI Bank, J. Chester Porter and Maria L. Bouvette in New York state court. The proceeding was removed to New York federal district court on January 16, 2013. SBAV LP v. Porter Bancorp, et. al., Civ. Action 1:13-CV-0372 (S.D.N.Y). The complaint alleges violation of the Kentucky Securities Act, negligent misrepresentation and, against defendants Porter Bancorp and Bouvette, breach of contract. The plaintiff seeks damages in an amount in excess of $4,500,000, or the difference between the $5,000,016 purchase price and the value of the securities when sold by the plaintiff, plus interest at the applicable statutory rate, costs and reasonable attorneys’ fees. On July 10, 2013, the New York federal district court granted the defendants’ motion to transfer the case to federal district court in Kentucky. SBAV LP v. Porter Bancorp, et. al., Civ. Action 3:13-CV-710 (W.D.Ky). We dispute the material factual allegations made in the complaint and intend to defend the plaintiff’s claims vigorously. We have not accrued liability related to this matter as we believe we have meritorious defenses.
	Miller Health Systems Inc. Employee Stock Ownership Plan Regulatory Review. From 2007 until the first quarter of 2013, PBI Bank served as trustee for certain Employee Stock Ownership Plan (ESOP) purchase transactions. These transactions are subject to regular and routine reviews by the United States Department of Labor (DOL) for compliance with ERISA. Failure to fulfill our fiduciary duties under ERISA with respect to any such plan would subject us to certain financial risks such as claims for damages as well as fines and penalties assessable under ERISA.
	In 2007, we served as Trustee in the Miller Health Systems, Inc. ESOP transaction. This transaction is under review by the United States Department of Labor (DOL) for compliance with ERISA. The DOL has alleged apparent violations of ERISA in this transaction. While there is no litigation at this time, the ultimate outcome of this matter could have a material adverse effect on our financial condition, results of operations or cash flows. We have not recorded accruals for this matter as we believe we fulfilled our fiduciary duties under ERISA and that liability is not probable nor can the amount be reasonably estimated.

Basis_of_Presentation_and_Summ1

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2013
Basis of Presentation	'
	Basis of Presentation – The consolidated financial statements include Porter Bancorp, Inc. (Company or PBI) and its subsidiary, PBI Bank (Bank). The Company owns a 100% interest in the Bank. All significant inter-company transactions and accounts have been eliminated in consolidation.
	The accompanying unaudited consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, the financial statements do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for nine months ended September 30, 2013 are not necessarily indicative of the results that may be expected for the entire year. A description of other significant accounting policies is presented in the notes to the Consolidated Financial Statements for the year ended December 31, 2012 included in the Company’s Annual Report on Form 10-K.
Use of Estimates	'
	Use of Estimates – To prepare financial statements in conformity with U.S. generally accepted accounting principles, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and future results could differ. The allowance for loan losses, fair values of financial instruments, stock compensation, deferred tax assets, other intangibles, and fair values of other real estate owned are particularly subject to change.
Reclassifications	'
	Reclassifications – Some items in the prior year financial statements were reclassified to conform to the current presentation. The reclassifications did not impact net income or stockholders’ equity.

Securities_Tables

Securities (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value of Available for Sale Securities and Related Gross Unrealized Gains and Losses	'
	The fair value of available for sale securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) were as follows:
		Amortized		Gross			Gross			Fair
		Cost		Unrealized			Unrealized			Value
				Gains			Losses
		(in thousands)
	September 30, 2013:
	U.S. Government and federal agency	$	29,184	$	328		$	(1,599	)	$	27,913
	Agency mortgage-backed: residential		85,583		519			(1,529	)		84,573
	State and municipal		58,150		962			(1,965	)		57,147
	Corporate bonds		23,123		915			(473	)		23,565
	Other		572		34			—			606
	Total debt securities		196,612		2,758			(5,566	)		193,804
	Equity		135		42			—			177
	Total	$	196,747	$	2,800		$	(5,566	)	$	193,981
	December 31, 2012:
	U.S. Government and federal agency	$	5,603	$	530		$	—		$	6,133
	Agency mortgage-backed: residential		94,298		1,141			(257	)		95,182
	State and municipal		52,485		2,335			(87	)		54,733
	Corporate bonds		18,851		1,150			(37	)		19,964
	Other		572		46			—			618
	Total debt securities		171,809		5,202			(381	)		176,630
	Equity		1,359		487			—			1,846
	Total	$	173,168	$	5,689		$	(381	)	$	178,476
Sales and Calls of Available for Sale Securities	'
	Sales and calls of available for sale securities were as follows:
		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2013		2012			2013			2012
		(in thousands)					(in thousands)
	Proceeds	$	804	$	—		$	2,712		$	65,695
	Gross gains		24		—			728			3,530
	Gross losses		—		—			1			—
Amortized Cost and Fair Value of Debt Investment Securities Portfolio by Contractual Maturity	'
		September 30, 2013
		Amortized		Fair
		Cost		Value
		(in thousands)
	Maturity
	Available-for-sale
	Within one year	$	17,229	$	16,810
	One to five years		15,513		16,690
	Five to ten years		69,908		67,557
	Beyond ten years		8,379		8,174
	Agency mortgage-backed: residential		85,583		84,573
	Total	$	196,612	$	193,804
Securities with Unrealized Losses	'
	Securities with unrealized losses at September 30, 2013 and December 31, 2012, aggregated by investment category and length of time the individual securities have been in a continuous unrealized loss position, are as follows:
		Less than 12 Months					12 Months or More						Total
	Description of Securities	Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
		Value		Loss			Value			Loss			Value		Loss
		(in thousands)
	September 30, 2013:
	U.S Government & federal agency	$	22,104	$	(1,599	)	$	—		$	—		$	22,104	$	(1,599	)
	Agency mortgage-backed: residential		43,799		(1,195	)		7,864			(334	)		51,663		(1,529	)
	State and municipal		34,048		(1,897	)		1,068			(68	)		35,116		(1,965	)
	Corporate bonds		12,822		(473	)		—			—			12,822		(473	)
	Total temporarily impaired	$	112,773	$	(5,164	)	$	8,932		$	(402	)	$	121,705	$	(5,566	)
	December 31, 2012:
	Agency mortgage-backed: residential	$	23,375	$	(257	)	$	—		$	—		$	23,375	$	(257	)
	State and municipal		7,961		(87	)		—			—			7,961		(87	)
	Corporate bonds		3,777		(37	)		—			—			3,777		(37	)
	Equity		2		—			—			—			2		—
	Total temporarily impaired	$	35,115	$	(381	)	$	—		$	—		$	35,115	$	(381	)

Loans_Tables

Loans (Tables)	9 Months Ended
	Sep. 30, 2013
Loans	'
		September 30,			December 31,
		2013			2012
		(in thousands)
	Loans were as follows:
	Commercial	$	51,572		$	52,567
	Commercial Real Estate:
	Construction		51,994			70,284
	Farmland		73,159			80,825
	Nonfarm nonresidential		236,579			322,687
	Residential Real Estate:
	Multi-family		46,052			50,986
	1-4 Family		234,759			278,273
	Consumer		15,709			20,383
	Agriculture		23,669			22,317
	Other		747			770
	Subtotal		734,240			899,092
	Less: Allowance for loan losses		(31,754	)		(56,680	)
	Loans, net	$	702,486		$	842,412
Activity in Allowance for Loan Losses by Portfolio Segment	'
	The following table presents the activity in the allowance for loan losses by portfolio segment for the three months ended September 30, 2013 and 2012:
		Commercial			Commercial			Residential			Consumer			Agriculture			Other			Total
					Real Estate			Real Estate
		(in thousands)
	September 30, 2013:
	Beginning balance	$	4,648		$	21,022		$	10,790		$	594		$	487		$	18		$	37,559
	Provision for loan losses		(539	)		196			612			61			(67	)		(13	)		250
	Loans charged off		(965	)		(4,726	)		(1,272	)		(99	)		(9	)		—			(7,071	)
	Recoveries		443			456			63			44			10			—			1,016
	Ending balance	$	3,587		$	16,948		$	10,193		$	600		$	421		$	5		$	31,754
	September 30, 2012:
	Beginning balance	$	3,811		$	31,049		$	15,587		$	792		$	343		$	12		$	51,594
	Provision for loan losses		2,630			17,412			4,326			366			763			3			25,500
	Loans charged off		(2,400	)		(16,192	)		(3,824	)		(375	)		(696	)		—			(23,487	)
	Recoveries		27			324			16			24			21			—			412
	Ending balance	$	4,068		$	32,593		$	16,105		$	807		$	431		$	15		$	54,019
	The following table presents the activity in the allowance for loan losses by portfolio segment for the nine months ended September 30, 2013 and 2012:
		Commercial			Commercial			Residential			Consumer			Agriculture			Other			Total
					Real Estate			Real Estate
		(in thousands)
	September 30, 2013:
	Beginning balance	$	4,402		$	34,768		$	16,235		$	857		$	403		$	15		$	56,680
	Provision for loan losses		94			72			522			140			(118	)		(10	)		700
	Loans charged off		(2,073	)		(18,904	)		(6,748	)		(620	)		(92	)		—			(28,437	)
	Recoveries		1,164			1,012			184			223			228			—			2,811
	Ending balance	$	3,587		$	16,948		$	10,193		$	600		$	421		$	5		$	31,754
	September 30, 2012:
	Beginning balance	$	4,207		$	33,024		$	14,217		$	792		$	325		$	14		$	52,579
	Provision for loan losses		2,641			19,187			9,528			687			1,206			1			33,250
	Loans charged off		(2,866	)		(20,055	)		(7,715	)		(747	)		(1,124	)		—			(32,507	)
	Recoveries		86			437			75			75			24			—			697
	Ending balance	$	4,068		$	32,593		$	16,105		$	807		$	431		$	15		$	54,019
Balance in Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment and Based on Impairment Method	'
	The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on the impairment method as of September 30, 2013:
		Commercial			Commercial			Residential			Consumer			Agriculture			Other			Total
					Real Estate			Real Estate
		(in thousands)
	Allowance for loan losses:
	Ending allowance balance attributable to loans:
	Individually evaluated for impairment	$	381		$	3,267		$	1,046		$	68		$	—		$	—		$	4,762
	Collectively evaluated for impairment		3,206			13,681			9,147			532			421			5			26,992
	Total ending allowance balance	$	3,587		$	16,948		$	10,193		$	600		$	421		$	5		$	31,754
	Loans:
	Loans individually evaluated for impairment	$	5,226		$	99,437		$	49,741		$	148		$	332		$	533		$	155,417
	Loans collectively evaluated for impairment		46,346			262,295			231,070			15,561			23,337			214			578,823
	Total ending loans balance	$	51,572		$	361,732		$	280,811		$	15,709		$	23,669		$	747		$	734,240
	The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on the impairment method as of December 31, 2012:
		Commercial			Commercial			Residential			Consumer			Agriculture			Other			Total
					Real Estate			Real Estate
		(in thousands)
	Allowance for loan losses:
	Ending allowance balance attributable to loans:
	Individually evaluated for impairment	$	263		$	16,046		$	4,641		$	68		$	5		$	11		$	21,034
	Collectively evaluated for impairment		4,139			18,722			11,594			789			398			4			35,646
	Total ending allowance balance	$	4,402		$	34,768		$	16,235		$	857		$	403		$	15		$	56,680
	Loans:
	Loans individually evaluated for impairment	$	5,296		$	125,922		$	56,799		$	212		$	55		$	524		$	188,808
	Loans collectively evaluated for impairment		47,271			347,874			272,460			20,171			22,262			246			710,284
	Total ending loans balance	$	52,567		$	473,796		$	329,259		$	20,383		$	22,317		$	770		$	899,092
Loans Individually Evaluated for Impairment by Class of Loans	'
	The following table presents information related to loans individually evaluated for impairment by class of loans as of and for the three and nine months ended September 30, 2013:
											Three Months Ended						Nine Months Ended
											September 30, 2013						September 30, 2013
		Unpaid			Recorded			Allowance			Average			Interest			Average			Interest			Cash Basis
		Principal			Investment			For Loan			Recorded			Income			Recorded			Income			Income
		Balance						Losses			Investment			Recognized			Investment			Recognized			Recognized
								Allocated
		(in thousands)
	With No Related Allowance Recorded:
	Commercial	$	1,853		$	1,556		$	—		$	1,727		$	30		$	1,644		$	30		$	30
	Commercial real estate:
	Construction		311			195			—			193			153			574			164			164
	Farmland		4,641			4,575			—			4,439			5			4,349			177			177
	Nonfarm nonresidential		2,209			1,980			—			1,753			109			1,803			366			366
	Residential real estate:
	Multi-family		447			395			—			516			—			579			—			—
	1-4 Family		10,953			10,078			—			10,538			33			11,896			90			90
	Consumer		14			14			—			8			—			25			—			—
	Agriculture		410			332			—			266			—			186			—			—
	Other		18			18			—			18			—			9			—			—
	With An Allowance Recorded:
	Commercial		3,776			3,670			381			4,110			19			4,016			80			—
	Commercial real estate:
	Construction		20,462			19,316			388			20,831			10			22,900			78			—
	Farmland		8,000			5,606			194			5,575			11			5,914			33			—
	Nonfarm nonresidential		83,138			67,765			2,685			74,620			327			78,285			1,009			—
	Residential real estate:
	Multi-family		14,199			12,490			395			12,713			51			13,372			158			—
	1-4 Family		28,795			26,778			651			27,283			140			27,963			358			—
	Consumer		202			134			68			122			1			146			2			—
	Agriculture		—			—			—			—			—			3			—			—
	Other		514			515			—			516			5			520			13			—
	Total	$	179,942		$	155,417		$	4,762		$	165,228		$	894		$	174,184		$	2,558		$	827
	The following table presents loans individually evaluated for impairment by class of loan as of December 31, 2012:
		Unpaid			Recorded			Allowance			Average			Interest			Cash
		Principal			Investment			For Loan			Recorded			Income			Basis
		Balance						Losses			Investment			Recognized			Income
								Allocated									Recognized
		(in thousands)
	With No Related Allowance Recorded:
	Commercial	$	1,460		$	1,234		$	—		$	1,637		$	5		$	4
	Commercial real estate:
	Construction		1,155			1,109			—			1,745			2			2
	Farmland		4,448			4,448			—			4,706			57			57
	Nonfarm nonresidential		2,134			1,892			—			3,436			3			3
	Residential real estate:
	Multi-family		643			643			—			910			—			—
	1-4 Family		13,539			13,158			—			11,291			56			56
	Consumer		70			70			—			219			8			5
	Agriculture		45			45			—			366			2			—
	Other		—			—			—			—			—			—
	With An Allowance Recorded:
	Commercial		4,108			4,062			263			3,964			169			27
	Commercial real estate:
	Construction		26,645			25,455			1,543			19,514			348			5
	Farmland		8,557			6,456			734			5,794			43			2
	Nonfarm nonresidential		97,699			86,562			13,769			83,087			2,011			185
	Residential real estate:
	Multi-family		14,906			14,906			1,643			11,187			468			—
	1-4 Family		31,021			28,092			2,998			27,404			787			9
	Consumer		142			142			68			29			—			—
	Agriculture		10			10			5			6			—			—
	Other		524			524			11			533			17			—
Total	$	207,106		$	188,808		$	21,034		$	175,828		$	3,976		$	355
Types of Troubled Debt Restructuring Loan Modification by Portfolio Segment Outstanding	'
	The following table presents the types of TDR loan modifications by portfolio segment outstanding as of September 30, 2013 and December 31, 2012:
		TDRs			TDRs Not			Total
		Performing to			Performing to			TDRs
		Modified			Modified
		Terms			Terms
		(in thousands)
	September 30, 2013
	Commercial
	Rate reduction	$	1,957		$	—		$	1,957
	Principal deferral		—			875			875
	Commercial Real Estate:
	Construction
	Rate reduction		277			6,362			6,639
	Principal deferral		499			—			499
	Farmland
	Rate reduction		150			—			150
	Principal deferral		701			2,438			3,139
	Nonfarm nonresidential
	Rate reduction		23,511			21,678			45,189
	Interest only payments		2,448			1,489			3,937
	Residential Real Estate:
	Multi-family
	Rate reduction		4,385			6,728			11,113
	Interest only payments		644			—			644
	1-4 Family
	Rate reduction		8,805			9,685			18,490
	Consumer
	Rate reduction		77			—			77
	Other
	Rate reduction		514			—			514
	Total TDRs	$	43,968		$	49,255		$	93,223
		TDRs			TDRs Not			Total
		Performing to			Performing to			TDRs
		Modified			Modified
		Terms			Terms
		(in thousands)
	December 31, 2012
	Commercial
	Rate reduction	$	1,972		$	—		$	1,972
	Principal deferral		887			—			887
	Interest only payments		—			958			958
	Commercial Real Estate:
	Construction
	Rate reduction		4,834			4,459			9,293
	Farmland
	Rate reduction		150			—			150
	Principal deferral		725			2,438			3,163
	Nonfarm nonresidential
	Rate reduction		36,515			22,631			59,146
	Principal deferral		1,195			—			1,195
	Interest only payments		2,466			2,107			4,573
	Residential Real Estate:
	Multi-family
	Rate reduction		13,087			—			13,087
	Interest only payments		652			—			652
	1-4 Family
	Rate reduction		14,323			7,871			22,194
	Consumer
	Rate reduction		14			—			14
	Other
	Rate reduction		524			—			524
	Total TDRs	$	77,344		$	40,464		$	117,808
	The following tables present a summary of the types of TDR loan modifications by portfolio type that occurred during the three months ended September 30, 2013 and 2012:
	TDRs			TDRs Not			Total
	Performing to			Performing to			TDRs
	Modified			Modified
	Terms			Terms
	(in thousands)
30-Sep-13
Residential Real Estate:
1-4 Family
Rate reduction	$	363		$	—		$	363
Consumer
Rate reduction		26			—			26
Total TDRs	$	389		$	—		$	389
	TDRs			TDRs Not			Total
	Performing to			Performing to			TDRs
	Modified			Modified
	Terms			Terms
	(in thousands)
September 30, 2012
Commercial Real Estate:
Farmland
Rate reduction	$	150		$	—		$	150
Nonfarm nonresidential
Rate reduction		5,549			—			5,549
Total TDRs	$	5,699		$	—		$	5,699
The following tables present a summary of the types of TDR loan modifications by portfolio type that occurred during the nine months ended September 30, 2013 and 2012:
	TDRs			TDRs Not			Total
	Performing to			Performing to			TDRs
	Modified			Modified
	Terms			Terms
	(in thousands)
September 30, 2013
Commercial:
Rate reduction	$	39		$	—		$	39
Commercial Real Estate:
Construction
Rate reduction		—			1,291			1,291
Principal deferral		499			—			499
Nonfarm nonresidential
Rate reduction		388			—			388
Residential Real Estate:
1-4 Family
Rate reduction		1,254			—			1,254
Consumer:
Rate reduction		64			—			64
Total TDRs	$	2,244		$	1,291		$	3,535
	TDRs			TDRs Not			Total
	Performing to			Performing to			TDRs
	Modified			Modified
	Terms			Terms
	(in thousands)
September 30, 2012
Commercial:
Interest only payments	$	—		$	1,019		$	1,019
Commercial Real Estate:
Construction
Rate reduction		—			849			849
Farmland
Rate reduction		150			—			150
Nonfarm nonresidential
Rate reduction		16,700			—			16,700
Principal deferral		1,196			—			1,196
Interest only payments		2,467			2,174			4,641
Residential Real Estate:
Multi-family
Rate reduction		12,848			31			12,879
1-4 Family
Rate reduction		7,440			—			7,440
Principal deferral		—			384			384
Total TDRs	$	40,801		$	4,457		$	45,258
Nonperforming loans	'
	The following table presents the recorded investment in nonaccrual and loans past due 90 days and still on accrual by class of loan as of September 30, 2013, and December 31, 2012:
		Nonaccrual						Loans Past
								Due 90 Days
								And Over Still
								Accruing
		September 30,			December 31,			September 30,			December 31,
		2013			2012			2013			2012
		(in thousands)
	Commercial	$	3,084		$	2,437		$	—		$	36
	Commercial Real Estate:
	Construction		18,734			7,808			—			—
	Farmland		9,187			10,030			—			—
	Nonfarm nonresidential		40,394			46,036			—			—
	Residential Real Estate:
	Multi-family		7,647			1,516			—			—
	1-4 Family		27,455			26,501			—			50
	Consumer		71			135			—			—
	Agriculture		332			54			—			—
	Other		18			—			—			—
	Total	$	106,922		$	94,517		$	—		$	86
	The following table presents the aging of the recorded investment in past due loans as of September 30, 2013 and December 31, 2012:
		30 – 59			60 – 89			90 Days			Nonaccrual			Total
		Days			Days			And Over						Past Due
		Past Due			Past Due			Past Due						And
														Nonaccrual
		(in thousands)
	September 30, 2013
	Commercial	$	4,290		$	174		$	—		$	3,084		$	7,548
	Commercial Real Estate:
	Construction		—			—			—			18,734			18,734
	Farmland		289			97			—			9,187			9,573
	Nonfarm nonresidential		771			5,968			—			40,394			47,133
	Residential Real Estate:
	Multi-family		1,185			—			—			7,647			8,832
	1-4 Family		3,267			1,219			—			27,455			31,941
	Consumer		198			35			—			71			304
	Agriculture		18			89			—			332			439
	Other		—			—			—			18			18
	Total	$	10,018		$	7,582		$	—		$	106,922		$	124,522
		30 – 59			60 – 89			90 Days			Nonaccrual			Total
		Days			Days			And Over						Past Due
		Past Due			Past Due			Past Due						And
														Nonaccrual
		(in thousands)
	December 31, 2012
	Commercial	$	1,279		$	90		$	36		$	2,437		$	3,842
	Commercial Real Estate:
	Construction		10,510			5,815			—			7,808			24,133
	Farmland		922			58			—			10,030			11,010
	Nonfarm non residential		5,138			13,037			—			46,036			64,211
	Residential Real Estate:
	Multi-family		8,762			—			—			1,516			10,278
	1-4 Family		11,145			1,221			50			26,501			38,917
	Consumer		310			75			—			135			520
	Agriculture		153			7			—			54			214
	Other		—			—			—			—			—
	Total	$	38,219		$	20,303		$	86		$	94,517		$	153,125
Risk Category of Loans by Class of Loans	'
	As of September 30, 2013, and December 31, 2012, and based on the most recent analysis performed, the risk category of loans by class of loans is as follows:
		Pass			Watch			Special			Substandard			Doubtful			Total
								Mention
		(in thousands)
	September 30, 2013
	Commercial	$	33,519		$	8,203		$	706		$	9,100		$	44		$	51,572
	Commercial Real Estate:
	Construction		17,072			11,404			2,248			21,270			—			51,994
	Farmland		45,172			11,568			879			15,540			—			73,159
	Nonfarm nonresidential		87,574			62,363			2,982			83,414			246			236,579
	Residential Real Estate:
	Multi-family		15,230			15,397			—			15,425			—			46,052
	1-4 Family		131,240			46,734			2,428			54,357			—			234,759
	Consumer		13,845			1,079			6			779			—			15,709
	Agriculture		20,853			2,125			—			691			—			23,669
	Other		215			514			—			18			—			747
	Total	$	364,720		$	159,387		$	9,249		$	200,594		$	290		$	734,240
		Pass			Watch			Special			Substandard			Doubtful			Total
								Mention
		(in thousands)
	December 31, 2012
	Commercial	$	27,085		$	10,153		$	6,495		$	8,772		$	62		$	52,567
	Commercial Real Estate:
	Construction		26,085			21,713			3,647			18,839			—			70,284
	Farmland		47,017			13,461			3,532			16,815			—			80,825
	Nonfarm nonresidential		122,603			66,223			14,955			118,635			271			322,687
	Residential Real Estate:
	Multi-family		18,387			14,637			—			17,962			—			50,986
	1-4 Family		159,975			47,030			5,167			66,101			—			278,273
	Consumer		17,232			2,211			35			842			63			20,383
	Agriculture		19,256			1,467			869			725			—			22,317
	Other		246			524			—			—			—			770
	Total	$	437,886		$	177,419		$	34,700		$	248,691		$	396		$	899,092

Other_Real_Estate_Owned_Tables

Other Real Estate Owned (Tables)	9 Months Ended
	Sep. 30, 2013
Major Categories of Other Real Estate Owned	'
	The following table presents the major categories of OREO at the period-ends indicated:
		September 30,			December 31,
		2013			2012
		(in thousands)
	Commercial Real Estate:
	Construction	$	20,546		$	22,912
	Farmland		545			618
	Other		14,410			15,577
	Residential Real Estate:
	Multi-family		517			200
	1-4 Family		6,436			5,518
			42,454			44,825
	Valuation allowance		(597	)		(1,154	)
		$	41,857		$	43,671
Other Real Estate Owned Valuation Allowance Activity	'
		For the Three						For the Nine
		Months Ended						Months Ended
		September 30,						September 30,
		2013			2012			2013			2012
		(in thousands)						(in thousands)
	OREO Valuation Allowance Activity:
	Beginning balance	$	747		$	1,724		$	1,154		$	1,667
	Provision to allowance		300			4,260			1,584			5,090
	Write-downs		(450	)		(4,189	)		(2,141	)		(4,962	)
	Ending balance	$	597		$	1,795		$	597		$	1,795
	Net activity relating to other real estate owned during the nine months ended September 30, 2013 and 2012 is as follows:
		2013			2012
		(in thousands)
	OREO Activity
	OREO as of January 1	$	43,671		$	41,449
	Real estate acquired		18,542			31,531
	Valuation adjustments for declining market values		(1,584	)		(5,090	)
	Improvements		—			1
	Loss on sale		(190	)		(1,481	)
	Proceeds from sale of properties		(18,582	)		(17,573	)
	OREO as of September 30	$	41,857		$	48,837
Expenses Related to Other Real Estate Owned	'
	Expenses related to other real estate owned include:
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013			2012
		(in thousands)						(in thousands)
	Net loss (gain) on sales	$	(169	)	$	533		$	190		$	1,481
	Provision to allowance		300			4,260			1,584			5,090
	Operating expense		538			411			1,343			1,095
	Total	$	669		$	5,204		$	3,117		$	7,666

Deposits_Tables

Deposits (Tables)	9 Months Ended
	Sep. 30, 2013
Scheduled of Deposits by Category	'
	The following table shows deposits by category:
		September 30,		December 31,
		2013		2012
		(in thousands)
	Non-interest bearing	$	101,191	$	114,310
	Interest checking		71,851		87,234
	Money market		77,292		63,715
	Savings		37,622		39,227
	Certificates of deposit		658,940		760,573
	Total	$	946,896	$	1,065,059
Scheduled Maturities of Total Time Deposits	'
	Scheduled maturities of total time deposits at September 30, 2013 are as follows (in thousands):
	Year 1	$	378,763
	Year 2		236,022
	Year 3		25,836
	Year 4		10,350
	Year 5		7,930
	Thereafter		39
		$	658,940

Advances_from_the_Federal_Home1

Advances from the Federal Home Loan Bank (Tables)	9 Months Ended
	Sep. 30, 2013
Advances from Federal Home Loan Bank	'
	Advances from the Federal Home Loan Bank were as follows:
		September 30,		December 31,
		2013		2012
		(in thousands)
	Monthly amortizing advances with fixed rates from 0.00% to 5.25% and maturities ranging from 2013 through 2033, averaging 3.13% for 2013	$	4,741	$	5,604

Fair_Values_Measurement_Tables

Fair Values Measurement (Tables)	9 Months Ended
	Sep. 30, 2013
Financial Assets Measured at Fair Value on Recurring and Non-recurring Basis	'
	Financial assets measured at fair value on a recurring basis at September 30, 2013 and December 31, 2012 are summarized below:
				Fair Value Measurements at September 30, 2013 Using
				(in thousands)
	Description	Carrying		Quoted Prices In			Significant Other			Significant
		Value		Active Markets for			Observable Inputs			Unobservable
				Identical Assets			(Level 2)			Inputs
				(Level 1)						(Level 3)
	Available-for-sale securities
	U.S. Government and federal agency	$	27,913	$	—		$	27,913		$	—
	Agency mortgage-backed: residential		84,573		—			84,573			—
	State and municipal		57,147		—			57,147			—
	Corporate bonds		23,565		—			23,565			—
	Other debt securities		606		—			—			606
	Equity securities		177		177			—			—
	Total	$	193,981	$	177		$	193,198		$	606
				Fair Value Measurements at December 31, 2012 Using
				(in thousands)
	Description	Carrying		Quoted Prices In			Significant Other			Significant
		Value		Active Markets for			Observable			Unobservable
				Identical Assets			Inputs			Inputs
				(Level 1)			(Level 2)			(Level 3)
	Available-for-sale securities
	U.S. Government and federal agency	$	6,133	$	—		$	6,133		$	—
	Agency mortgage-backed: residential		95,182		—			95,182			—
	State and municipal		54,733		—			54,733			—
	Corporate bonds		19,964		—			19,964			—
	Other debt securities		618		—			—			618
	Equity securities		1,846		1,846			—			—
	Total	$	178,476	$	1,846		$	176,012		$	618
	Financial assets measured at fair value on a non-recurring basis are summarized below:
				Fair Value Measurements at September 30, 2013 Using
				(in thousands)
	Description	Carrying		Quoted Prices In			Significant Other			Significant
		Value		Active Markets for			Observable Inputs			Unobservable
				Identical Assets			(Level 2)			Inputs
				(Level 1)						(Level 3)
	Impaired loans:
	Commercial	$	3,289	$	—		$	—		$	3,289
	Commercial real estate:
	Construction		18,928		—			—			18,928
	Farmland		5,412		—			—			5,412
	Other		65,080		—			—			65,080
	Residential real estate:
	Multi-family		12,095		—			—			12,095
	1-4 Family		26,127		—			—			26,127
	Consumer		66		—			—			66
	Other		515		—			—			515
	Other real estate owned, net:
	Commercial real estate:
	Construction		20,257		—			—			20,257
	Farmland		537		—			—			537
	Other		14,208		—			—			14,208
	Residential real estate:
	Multi-family		509		—			—			509
	1-4 Family		6,346		—			—			6,346
				Fair Value Measurements at December 31, 2012 Using
				(in thousands)
	Description	Carrying		Quoted Prices In			Significant Other			Significant
		Value		Active Markets for			Observable Inputs			Unobservable
				Identical Assets			(Level 2)			Inputs
				(Level 1)						(Level 3)
	Impaired loans:
	Commercial	$	3,799	$	—		$	—		$	3,799
Commercial real estate:
Construction		23,912		—			—			23,912
Farmland		5,722		—			—			5,722
Other		72,793		—			—			72,793
Residential real estate:
Multi-family		13,263		—			—			13,263
1-4 Family		25,094		—			—			25,094
Consumer		74		—			—			74
Agriculture		5		—			—			5
Other		513		—			—			513
Other real estate owned, net:
Commercial real estate:
Construction		22,323		—			—			22,323
Farmland		602		—			—			602
Other		15,175		—			—			15,175
Residential real estate:
Multi-family		195		—			—			195
1-4 Family		5,376		—			—			5,376
Reconciliation of all Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs Level 3	'
	The table below presents a reconciliation of all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the periods ended September 30, 2013 and 2012:
		State and Municipal					Other Debt
		Securities					Securities
		2013		2012			2013			2012
		(in thousands)
	Balances of recurring Level 3 assets at January 1	$	—	$	1,173		$	618		$	606
	Total gain (loss) for the period:
	Included in other comprehensive income (loss)		—		—			(12	)		(11	)
	Sales		—		(1,173	)		—			—
	Balance of recurring Level 3 assets at September 30	$	—	$	—		$	606		$	595
Qualitative Information About Level Three Fair Value Measurements for Financial Instruments Measured at Fair Value on Non-Recurring Basis	'
	The following table presents qualitative information about level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at September 30, 2013:
		Fair Value		Valuation		Unobservable Input(s)	Range (Weighted
				Technique(s)			Average)
		(in thousands)
	Impaired loans – Commercial	$	3,289	Market value approach		Adjustment for receivables and inventory discounts	16% -32%(24%)
	Impaired loans – Commercial real estate	$	89,420	Sales comparison approach		Adjustment for differences between the comparable sales	0% - 69%(20%)
	Impaired loans – Residential real estate	$	38,222	Sales comparison approach		Adjustment for differences between the comparable sales	0% - 50%(15%)
	Other real estate owned – Commercial real estate	$	35,002	Sales comparison approach		Adjustment for differences between the comparable sales	3% - 51%(21%)
				Income approach		Discount or capitalization rate	7% - 16%(11%)
	Other real estate owned – Residential real estate	$	6,855	Sales comparison approach		Adjustment for differences between the comparable sales	4% - 34%(12%)
	The following table presents qualitative information about level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2012:
		Fair Value		Valuation		Unobservable Input(s)	Range (Weighted
				Technique(s)			Average)
		(in thousands)
	Impaired loans – Commercial	$	3,799	Market value approach		Adjustment for receivables and inventory discounts	16% -32%(24%)
	Impaired loans – Commercial real estate	$	89,461	Sales comparison approach		Adjustment for differences between the comparable sales	0% - 69%(19%)
	Impaired loans – Residential real estate	$	38,357	Sales comparison approach		Adjustment for differences between the comparable sales	0% - 38%(15%)
	Other real estate owned – Commercial real estate	$	38,100	Sales comparison approach		Adjustment for differences between the comparable sales	3% - 50%(18%)
				Income approach		Discount or capitalization rate	9% - 16%(12%)
	Other real estate owned – Residential real estate	$	5,571	Sales comparison approach		Adjustment for differences between the comparable sales	0% - 30%(9%)
Carrying Amount and Estimated Fair Values of Financial Instruments	'
	Carrying amount and estimated fair values of financial instruments were as follows for the periods indicated:
				Fair Value Measurements at September 30, 2013 Using
		Carrying		Level 1			Level 2			Level 3			Total
		Amount
		(in thousands)
	Financial assets
	Cash and cash equivalents	$	53,433	$	44,674		$	8,759		$	—		$	53,433
	Securities available for sale		193,981		177			193,198			606			193,981
	Federal Home Loan Bank stock		10,072		N/A			N/A			N/A			N/A
	Mortgage loans held for sale		123		—			123			—			123
	Loans, net		702,486		—			—			719,094			719,094
	Accrued interest receivable		3,964		—			1,198			2,766			3,964
	Financial liabilities
	Deposits	$	946,896	$	98,885		$	848,738		$	—		$	947,623
	Securities sold under agreements to repurchase		3,722		—			3,722			—			3,722
	Federal Home Loan Bank advances		4,741		—			4,743			—			4,743
	Subordinated capital notes		6,075		—			—			5,789			5,789
	Junior subordinated debentures		25,000		—			—			13,550			13,550
	Accrued interest payable		2,375		—			1,037			1,338			2,375
				Fair Value Measurements at December 31, 2012 Using
		Carrying		Level 1			Level 2			Level 3			Total
		Amount
		(in thousands)
	Financial assets
	Cash and cash equivalents	$	49,572	$	41,938		$	7,634		$	—		$	49,572
	Securities available for sale		178,476		1,846			176,012			618			178,476
	Federal Home Loan Bank stock		10,072		N/A			N/A			N/A			N/A
	Mortgage loans held for sale		507		—			507			—			507
	Loans, net		842,412		—			—			853,996			853,996
	Accrued interest receivable		5,138		—			1,150			3,988			5,138
	Financial liabilities
	Deposits	$	1,065,059	$	114,310		$	955,216		$	—		$	1,069,526
	Securities sold under agreements to repurchase		2,634		—			2,634			—			2,634
	Federal Home Loan Bank advances		5,604		—			5,607			—			5,607
	Subordinated capital notes		6,975		—			—			6,599			6,599
	Junior subordinated debentures		25,000		—			—			13,821			13,821
	Accrued interest payable		2,104		—			1,173			931			2,104

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2013
Deferred Tax Assets and Liabilities	'
	Deferred tax assets and liabilities were due to the following as of:
		September 30,			December 31,
		2013			2012
		(in thousands)
	Deferred tax assets:
	Net operating loss carry-forward	$	25,993		$	15,051
	Allowance for loan losses		11,114			19,838
	Other real estate owned write-down		9,854			10,408
	Alternative minimum tax credit carry-forward		692			692
	Net assets from acquisitions		635			592
	Other than temporary impairment on securities		374			374
	Net unrealized loss on securities available for sale		968			—
	New market tax credit carry-forward		208			208
	Amortization of non-compete agreements		17			19
	Other		981			936
			50,836			48,118
	Deferred tax liabilities:
	FHLB stock dividends		1,276			1,276
	Fixed assets		322			409
	Originated mortgage servicing rights		81			98
	Net unrealized gain on securities available for sale		—			1,858
	Other		498			549
			2,177			4,190
	Net deferred tax assets before valuation allowance		48,659			43,928
	Valuation allowance		(48,659	)		(43,928	)
	Net deferred tax asset	$	—		$	—

Stock_Plans_and_Stock_Based_Co1

Stock Plans and Stock Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2013
Summary of Unvested Share Activity	'
	The following table summarizes unvested share activity as of and for the periods indicated for the Stock Incentive Plan:
		Nine Months Ended					Twelve Months Ended
		September 30, 2013					December 31, 2012
		Shares			Weighted		Shares			Weighted
					Average					Average
					Grant					Grant
					Price					Price
	Outstanding, beginning		153,316		$	5.92		96,688		$	13.4
	Granted		693,214			1.18		97,197			1.74
	Vested		(22,113	)		12.19		(27,362	)		13.04
	Forfeited		(31,322	)		6.84		(13,207	)		15.22
	Outstanding, ending		793,095		$	1.57		153,316		$	5.92
Summary of Unvested Share Activity for Non-Employee Directors	'
	The following table summarizes unvested share activity as of and for the periods indicated for the Non-Employee Directors Stock Ownership Incentive Plan:
		Nine Months Ended					Twelve Months Ended
		September 30, 2013					December 31, 2012
		Shares			Weighted		Shares			Weighted
					Average					Average
					Grant					Grant
					Price					Price
	Outstanding, beginning		80,078		$	1.77		3,538		$	7.91
	Granted		182,355			0.85		93,943			1.65
	Vested		(16,524	)		2.02		(17,403	)		2.37
	Forfeited		—			—		—			—
	Outstanding, ending		245,909		$	1.07		80,078		$	1.77
Summary of Stock Option Activity	'
	The following table summarizes stock option activity:
		Nine Months Ended					Twelve Months Ended
		September 30, 2013					December 31, 2012
		Shares			Weighted		Shares			Weighted
					Average					Average
					Exercise					Exercise
					Price					Price
	Outstanding, beginning		—		$	—		29,530		$	19.88
	Forfeited		—			—		—			—
	Expired		—			—		(29,530	)		19.88
	Outstanding, ending		—		$	—		—		$	—
Unrecognized Stock Based Compensation Expense Related to Unvested Shares	'
	Unrecognized stock based compensation expense related to unvested shares for the remainder of 2013 and beyond is estimated as follows (in thousands):
	October 2013 – December 2013	$	216
	2014		522
	2015		397
	2016		240
	2017 & thereafter		41

Earnings_Loss_per_Share_Tables

Earnings (Loss) per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Computation of Basic and Diluted Earnings Per Share	'
	The factors used in the basic and diluted earnings per share computations follow:
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013			2012
		(in thousands, except share and per share data)
	Net income (loss)	$	298		$	(27,732	)	$	(1,080	)	$	(26,079	)
	Less:
	Preferred stock dividends		437			437			1,311			1,312
	Accretion of Series A preferred stock discount		45			44			135			134
	Earnings (loss) allocated to unvested shares		(11	)		(501	)		(107	)		(345	)
	Earnings (loss) allocated to Series C preferred		(5	)		(763	)		(67	)		(750	)
	Net income (loss) allocated to common shareholders, basic and diluted	$	(168	)	$	(26,949	)	$	(2,352	)	$	(26,430	)
	Basic
	Weighted average common shares including unvested common shares outstanding		12,702,627			12,303,217			12,569,514			12,219,035
	Less: Weighted average unvested common shares		776,774			218,505			535,224			153,306
	Less: Weighted average Series C preferred		332,894			332,894			332,894			332,894
	Weighted average common shares outstanding		11,592,959			11,751,818			11,701,396			11,732,835
	Basic earnings (loss) per common share	$	(0.01	)	$	(2.29	)	$	(0.20	)	$	(2.25	)
	Diluted
	Add: Dilutive effects of assumed exercises of common and Preferred Series C stock warrants		—			—			—			—
	Weighted average common shares and potential common shares		11,592,959			11,751,818			11,701,396			11,732,835
	Diluted earnings (loss) per common share	$	(0.01	)	$	(2.29	)	$	(0.20	)	$	(2.25	)

Capital_Requirements_and_Restr1

Capital Requirements and Restrictions on Retained Earnings (Tables)	9 Months Ended
	Sep. 30, 2013
Ratios of Tier One Capital and Total Capital to Risk-Adjusted Assets and Leverage Ratios	'
	The following table shows the ratios of Tier 1 capital and total capital to risk-adjusted assets and the leverage ratios for Porter Bancorp, Inc. and PBI Bank at the dates indicated:
											September 30, 2013						December 31, 2012
		Regulatory			Well-Capitalized			Minimum Capital			Porter			PBI			Porter			PBI
		Minimums			Minimums			Ratios Under			Bancorp			Bank			Bancorp			Bank
								Consent Order
	Tier 1 Capital		4	%		6	%		N/A			7.19	%		8.94	%		6.46	%		7.71	%
	Total risk-based capital		8			10			12	%		10.78			11.04			9.81			9.82
	Tier 1 leverage ratio		4			5			9			5.15			6.4			4.5			5.37

Basis_of_Presentation_and_Summ2

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail)	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]	'
Ownership Interest in PBI Bank	100.00%

Going_Concern_Considerations_a1

Going Concern Considerations and Future Plans - Additional Information (Detail) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2010

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2010

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Oct. 31, 2012

Jun. 24, 2011

Sep. 30, 2013

Dec. 31, 2012

Jun. 24, 2011

Sep. 30, 2013

Dec. 31, 2012

Jun. 24, 2011

Sep. 30, 2013

Commercial Real Estate

Commercial Real Estate

Commercial Real Estate

Commercial Real Estate

Commercial Real Estate

Commercial Real Estate

Commercial Real Estate

Real estate construction

Real estate construction

Non-owner occupied commercial real estate loans

Non-owner occupied commercial real estate loans

Construction

Construction

Construction

1-4 Family

1-4 Family

Decrease

Consent order

Consent order

Consent order

Consent order

Consent order

Consent order

Consent order

Consent order

Sales Strategy Change

Other real estate owned, net

Other real estate owned, net

Other real estate owned, net

Other real estate owned, net

Commercial Real Estate

Commercial Real Estate

Commercial Real Estate

Commercial Real Estate

Commercial Real Estate

Other real estate owned, net

Other real estate owned, net

Construction and development loans

Construction and development loans

Construction and development loans

Non-owner occupied commercial real estate loans

Non-owner occupied commercial real estate loans

Non-owner occupied commercial real estate loans

Recent Developments [Line Items]

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Net income (loss) available to common shareholders

($168,000)

($26,949,000)

($2,352,000)

($26,430,000)

$33,400,000

$105,200,000

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Provision for loan losses

250,000

25,500,000

700,000

33,250,000

40,300,000

'

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196,000

17,412,000

72,000

19,187,000

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32,600,000

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Non-interest expense

8,468,000

14,150,000

29,841,000

33,459,000

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3,600,000

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Net interest income

7,849,000

10,132,000

24,499,000

32,381,000

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7,900,000

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Net loan charge-offs

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36,100,000

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Other real estate owned expense

669,000

5,204,000

3,117,000

7,666,000

10,500,000

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Cumulative accrued and unpaid dividends

3,700,000

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3,700,000

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Tier I leverage ratio, regulatory minimum

4.00%

9.00%

4.00%

9.00%

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9.00%

9.00%

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Total risk-based capital, regulatory minimum

8.00%

12.00%

8.00%

12.00%

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12.00%

12.00%

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Gross loans

734,240,000

'

734,240,000

'

899,092,000

1,100,000,000

1,300,000,000

361,732,000

'

361,732,000

'

473,796,000

'

'

'

'

152,000,000

293,300,000

51,994,000

70,284,000

199,500,000

'

'

'

'

'

'

'

'

'

'

'

'

Maximum concentration of loans to total risk based capital

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

75.00%

75.00%

75.00%

250.00%

250.00%

250.00%

'

Concentration of loans to total risk based capital

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

62.00%

82.00%

'

300.00%

362.00%

'

'

Maximum risk based capital loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

52,000,000

70,300,000

'

250,100,000

311,100,000

'

'

OREO acquired during the period

'

'

18,500,000

'

33,500,000

41,900,000

90,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value adjustments and loss on sale of OREO

'

'

1,800,000

'

9,300,000

42,800,000

13,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Losses on sale of OREO

169,000

-533,000

-190,000

-1,481,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

190,000

Net write-down of other real estate owned

'

'

1,584,000

5,090,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,600,000

Proceeds from sale of OREO

'

'

18,600,000

'

22,500,000

26,000,000

25,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of OREO portfolio

'

'

'

'

'

'

'

'

'

'

'

'

34.00%

35.00%

48.00%

51.00%

'

'

'

'

'

15.00%

12.00%

'

'

'

'

'

'

'

'

'

'

Construction, development and other land loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$52,000,000

$70,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair_Value_of_Available_for_Sa

Fair Value of Available for Sale Securities and Related Gross Unrealized Gains and Losses (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	$196,747	$173,168
Gross Unrealized Gains	2,800	5,689
Gross Unrealized Losses	-5,566	-381
Fair Value	193,981	178,476
Debt securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	196,612	171,809
Gross Unrealized Gains	2,758	5,202
Gross Unrealized Losses	-5,566	-381
Fair Value	193,804	176,630
Debt securities | U.S. Government and federal agency	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	29,184	5,603
Gross Unrealized Gains	328	530
Gross Unrealized Losses	-1,599	'
Fair Value	27,913	6,133
Debt securities | Agency mortgage-backed: residential	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	85,583	94,298
Gross Unrealized Gains	519	1,141
Gross Unrealized Losses	-1,529	-257
Fair Value	84,573	95,182
Debt securities | State and municipal	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	58,150	52,485
Gross Unrealized Gains	962	2,335
Gross Unrealized Losses	-1,965	-87
Fair Value	57,147	54,733
Debt securities | Corporate bonds	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	23,123	18,851
Gross Unrealized Gains	915	1,150
Gross Unrealized Losses	-473	-37
Fair Value	23,565	19,964
Debt securities | Other	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	572	572
Gross Unrealized Gains	34	46
Fair Value	606	618
Equity	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	135	1,359
Gross Unrealized Gains	42	487
Fair Value	$177	$1,846

Sales_and_Calls_of_Available_f

Sales and Calls of Available for Sale Securities (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Gain (Loss) on Investments [Line Items]	'	'	'	'
Proceeds	$804	'	$2,712	$65,695
Gross gains	24	'	728	3,530
Gross losses	'	'	$1	'

Amortized_Cost_and_Fair_Value_

Amortized Cost and Fair Value of Debt Investment Securities Portfolio by Contractual Maturity (Detail) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Amortized Cost	'
Within one year	$17,229
One to five years	15,513
Five to ten years	69,908
Beyond ten years	8,379
Agency mortgage-backed: residential	85,583
Total	196,612
Fair Value	'
Within one year	16,810
One to five years	16,690
Five to ten years	67,557
Beyond ten years	8,174
Agency mortgage-backed: residential	84,573
Total	$193,804

Securities_Additional_Informat

Securities - Additional Information (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]	'	'
Securities pledged, carrying values	$59,300,000	$76,400,000
Unrealized loss, less than 12 months	5,164,000	381,000
Equity	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Unrealized loss, less than 12 months	$0	'
Number of securities	1	'

Securities_with_Unrealized_Los

Securities with Unrealized Losses (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Investments, Unrealized Loss Position [Line Items]	'	'
Fair value, less than 12 months	$112,773,000	$35,115,000
Unrealized loss, less than 12 months	-5,164,000	-381,000
Fair value, 12 months or more	8,932,000	'
Unrealized loss, 12 months or more	-402,000	'
Fair value, total	121,705,000	35,115,000
Unrealized loss, total	-5,566,000	-381,000
Agency mortgage-backed: residential	'	'
Investments, Unrealized Loss Position [Line Items]	'	'
Fair value, less than 12 months	43,799,000	23,375,000
Unrealized loss, less than 12 months	-1,195,000	-257,000
Fair value, 12 months or more	7,864,000	'
Unrealized loss, 12 months or more	-334,000	'
Fair value, total	51,663,000	23,375,000
Unrealized loss, total	-1,529,000	-257,000
U.S. Government and federal agency	'	'
Investments, Unrealized Loss Position [Line Items]	'	'
Fair value, less than 12 months	22,104,000	'
Unrealized loss, less than 12 months	-1,599,000	'
Fair value, total	22,104,000	'
Unrealized loss, total	-1,599,000	'
State and municipal	'	'
Investments, Unrealized Loss Position [Line Items]	'	'
Fair value, less than 12 months	34,048,000	7,961,000
Unrealized loss, less than 12 months	-1,897,000	-87,000
Fair value, 12 months or more	1,068,000	'
Unrealized loss, 12 months or more	-68,000	'
Fair value, total	35,116,000	7,961,000
Unrealized loss, total	-1,965,000	-87,000
Corporate bonds	'	'
Investments, Unrealized Loss Position [Line Items]	'	'
Fair value, less than 12 months	12,822,000	3,777,000
Unrealized loss, less than 12 months	-473,000	-37,000
Fair value, total	12,822,000	3,777,000
Unrealized loss, total	-473,000	-37,000
Equity	'	'
Investments, Unrealized Loss Position [Line Items]	'	'
Fair value, less than 12 months	'	2,000
Fair value, total	'	$2,000

Loans_Detail

Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross loans	$734,240,000	$899,092,000	$1,100,000,000	$1,300,000,000
Less: Allowance for loan losses	-31,754,000	-56,680,000	'	'
Loans, net	702,486,000	842,412,000	'	'
Commercial	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross loans	51,572,000	52,567,000	'	'
Less: Allowance for loan losses	-3,587,000	-4,402,000	'	'
Commercial Real Estate	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross loans	361,732,000	473,796,000	'	'
Less: Allowance for loan losses	-16,948,000	-34,768,000	'	'
Commercial Real Estate | Construction	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross loans	51,994,000	70,284,000	'	199,500,000
Commercial Real Estate | Farmland	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross loans	73,159,000	80,825,000	'	'
Commercial Real Estate | Nonfarm nonresidential	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross loans	236,579,000	322,687,000	'	'
Residential Real Estate	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross loans	280,811,000	329,259,000	'	'
Less: Allowance for loan losses	-10,193,000	-16,235,000	'	'
Residential Real Estate | Multi-Family	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross loans	46,052,000	50,986,000	'	'
Residential Real Estate | 1-4 Family	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross loans	234,759,000	278,273,000	'	'
Consumer	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross loans	15,709,000	20,383,000	'	'
Less: Allowance for loan losses	-600,000	-857,000	'	'
Agriculture	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross loans	23,669,000	22,317,000	'	'
Less: Allowance for loan losses	-421,000	-403,000	'	'
Other	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross loans	747,000	770,000	'	'
Less: Allowance for loan losses	($5,000)	($15,000)	'	'

Activity_in_Allowance_for_Loan

Activity in Allowance for Loan Losses by Portfolio Segment (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'
Beginning balance	$37,559	$51,594	$56,680	$52,579	$52,579
Provision for loan losses	250	25,500	700	33,250	40,300
Loans charged off	-7,071	-23,487	-28,437	-32,507	'
Recoveries	1,016	412	2,811	697	'
Ending balance	31,754	54,019	31,754	54,019	56,680
Commercial	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'
Beginning balance	4,648	3,811	4,402	4,207	4,207
Provision for loan losses	-539	2,630	94	2,641	'
Loans charged off	-965	-2,400	-2,073	-2,866	'
Recoveries	443	27	1,164	86	'
Ending balance	3,587	4,068	3,587	4,068	'
Commercial Real Estate	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'
Beginning balance	21,022	31,049	34,768	33,024	33,024
Provision for loan losses	196	17,412	72	19,187	'
Loans charged off	-4,726	-16,192	-18,904	-20,055	'
Recoveries	456	324	1,012	437	'
Ending balance	16,948	32,593	16,948	32,593	'
Residential Real Estate	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'
Beginning balance	10,790	15,587	16,235	14,217	14,217
Provision for loan losses	612	4,326	522	9,528	'
Loans charged off	-1,272	-3,824	-6,748	-7,715	'
Recoveries	63	16	184	75	'
Ending balance	10,193	16,105	10,193	16,105	'
Consumer	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'
Beginning balance	594	792	857	792	792
Provision for loan losses	61	366	140	687	'
Loans charged off	-99	-375	-620	-747	'
Recoveries	44	24	223	75	'
Ending balance	600	807	600	807	'
Agriculture	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'
Beginning balance	487	343	403	325	325
Provision for loan losses	-67	763	-118	1,206	'
Loans charged off	-9	-696	-92	-1,124	'
Recoveries	10	21	228	24	'
Ending balance	421	431	421	431	'
Other	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'
Beginning balance	18	12	15	14	14
Provision for loan losses	-13	3	-10	1	'
Ending balance	$5	$15	$5	$15	'

Balance_in_Allowance_for_Loan_

Balance in Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment and Based on Impairment Method (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for loan losses:	'	'	'	'
Individually evaluated for impairment	$4,762,000	$21,034,000	'	'
Collectively evaluated for impairment	26,992,000	35,646,000	'	'
Total ending allowance balance	31,754,000	56,680,000	'	'
Loans:	'	'	'	'
Loans individually evaluated for impairment	155,417,000	188,808,000	'	'
Loans collectively evaluated for impairment	578,823,000	710,284,000	'	'
Total ending loans balance	734,240,000	899,092,000	1,100,000,000	1,300,000,000
Commercial	'	'	'	'
Allowance for loan losses:	'	'	'	'
Individually evaluated for impairment	381,000	263,000	'	'
Collectively evaluated for impairment	3,206,000	4,139,000	'	'
Total ending allowance balance	3,587,000	4,402,000	'	'
Loans:	'	'	'	'
Loans individually evaluated for impairment	5,226,000	5,296,000	'	'
Loans collectively evaluated for impairment	46,346,000	47,271,000	'	'
Total ending loans balance	51,572,000	52,567,000	'	'
Commercial Real Estate	'	'	'	'
Allowance for loan losses:	'	'	'	'
Individually evaluated for impairment	3,267,000	16,046,000	'	'
Collectively evaluated for impairment	13,681,000	18,722,000	'	'
Total ending allowance balance	16,948,000	34,768,000	'	'
Loans:	'	'	'	'
Loans individually evaluated for impairment	99,437,000	125,922,000	'	'
Loans collectively evaluated for impairment	262,295,000	347,874,000	'	'
Total ending loans balance	361,732,000	473,796,000	'	'
Residential Real Estate	'	'	'	'
Allowance for loan losses:	'	'	'	'
Individually evaluated for impairment	1,046,000	4,641,000	'	'
Collectively evaluated for impairment	9,147,000	11,594,000	'	'
Total ending allowance balance	10,193,000	16,235,000	'	'
Loans:	'	'	'	'
Loans individually evaluated for impairment	49,741,000	56,799,000	'	'
Loans collectively evaluated for impairment	231,070,000	272,460,000	'	'
Total ending loans balance	280,811,000	329,259,000	'	'
Consumer	'	'	'	'
Allowance for loan losses:	'	'	'	'
Individually evaluated for impairment	68,000	68,000	'	'
Collectively evaluated for impairment	532,000	789,000	'	'
Total ending allowance balance	600,000	857,000	'	'
Loans:	'	'	'	'
Loans individually evaluated for impairment	148,000	212,000	'	'
Loans collectively evaluated for impairment	15,561,000	20,171,000	'	'
Total ending loans balance	15,709,000	20,383,000	'	'
Agriculture	'	'	'	'
Allowance for loan losses:	'	'	'	'
Individually evaluated for impairment	'	5,000	'	'
Collectively evaluated for impairment	421,000	398,000	'	'
Total ending allowance balance	421,000	403,000	'	'
Loans:	'	'	'	'
Loans individually evaluated for impairment	332,000	55,000	'	'
Loans collectively evaluated for impairment	23,337,000	22,262,000	'	'
Total ending loans balance	23,669,000	22,317,000	'	'
Other	'	'	'	'
Allowance for loan losses:	'	'	'	'
Individually evaluated for impairment	'	11,000	'	'
Collectively evaluated for impairment	5,000	4,000	'	'
Total ending allowance balance	5,000	15,000	'	'
Loans:	'	'	'	'
Loans individually evaluated for impairment	533,000	524,000	'	'
Loans collectively evaluated for impairment	214,000	246,000	'	'
Total ending loans balance	$747,000	$770,000	'	'

Loans_Individually_Evaluated_f

Loans Individually Evaluated for Impairment by Class of Loans (Detail) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	$179,942	$179,942	$207,106
Recorded Investment	155,417	155,417	188,808
Allowance For Loan Losses Allocated	4,762	4,762	21,034
Average Recorded Investment	165,228	174,184	175,828
Interest Income Recognized	894	2,558	3,976
Cash Basis Income Recognized	'	827	355
Commercial	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment	5,226	5,226	5,296
Commercial Real Estate	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment	99,437	99,437	125,922
Residential Real Estate	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment	49,741	49,741	56,799
Consumer	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment	148	148	212
Agriculture	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment	332	332	55
Other	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment	533	533	524
Impaired Financing Receivables with No Related Allowance | Commercial	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	1,853	1,853	1,460
Recorded Investment	1,556	1,556	1,234
Average Recorded Investment	1,727	1,644	1,637
Interest Income Recognized	30	30	5
Cash Basis Income Recognized	'	30	4
Impaired Financing Receivables with No Related Allowance | Commercial Real Estate | Construction	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	311	311	1,155
Recorded Investment	195	195	1,109
Average Recorded Investment	193	574	1,745
Interest Income Recognized	153	164	2
Cash Basis Income Recognized	'	164	2
Impaired Financing Receivables with No Related Allowance | Commercial Real Estate | Farmland	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	4,641	4,641	4,448
Recorded Investment	4,575	4,575	4,448
Average Recorded Investment	4,439	4,349	4,706
Interest Income Recognized	5	177	57
Cash Basis Income Recognized	'	177	57
Impaired Financing Receivables with No Related Allowance | Commercial Real Estate | Nonfarm nonresidential	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	2,209	2,209	2,134
Recorded Investment	1,980	1,980	1,892
Average Recorded Investment	1,753	1,803	3,436
Interest Income Recognized	109	366	3
Cash Basis Income Recognized	'	366	3
Impaired Financing Receivables with No Related Allowance | Residential Real Estate | Multi-Family	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	447	447	643
Recorded Investment	395	395	643
Average Recorded Investment	516	579	910
Impaired Financing Receivables with No Related Allowance | Residential Real Estate | 1-4 Family	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	10,953	10,953	13,539
Recorded Investment	10,078	10,078	13,158
Average Recorded Investment	10,538	11,896	11,291
Interest Income Recognized	33	90	56
Cash Basis Income Recognized	'	90	56
Impaired Financing Receivables with No Related Allowance | Consumer	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	14	14	70
Recorded Investment	14	14	70
Average Recorded Investment	8	25	219
Interest Income Recognized	'	'	8
Cash Basis Income Recognized	'	'	5
Impaired Financing Receivables with No Related Allowance | Agriculture	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	410	410	45
Recorded Investment	332	332	45
Average Recorded Investment	266	186	366
Interest Income Recognized	'	'	2
Impaired Financing Receivables with No Related Allowance | Other	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	18	18	'
Recorded Investment	18	18	'
Average Recorded Investment	18	9	'
Impaired Financing Receivables with An Allowance Recorded | Commercial	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	3,776	3,776	4,108
Recorded Investment	3,670	3,670	4,062
Allowance For Loan Losses Allocated	381	381	263
Average Recorded Investment	4,110	4,016	3,964
Interest Income Recognized	19	80	169
Cash Basis Income Recognized	'	'	27
Impaired Financing Receivables with An Allowance Recorded | Commercial Real Estate | Construction	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	20,462	20,462	26,645
Recorded Investment	19,316	19,316	25,455
Allowance For Loan Losses Allocated	388	388	1,543
Average Recorded Investment	20,831	22,900	19,514
Interest Income Recognized	10	78	348
Cash Basis Income Recognized	'	'	5
Impaired Financing Receivables with An Allowance Recorded | Commercial Real Estate | Farmland	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	8,000	8,000	8,557
Recorded Investment	5,606	5,606	6,456
Allowance For Loan Losses Allocated	194	194	734
Average Recorded Investment	5,575	5,914	5,794
Interest Income Recognized	11	33	43
Cash Basis Income Recognized	'	'	2
Impaired Financing Receivables with An Allowance Recorded | Commercial Real Estate | Nonfarm nonresidential	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	83,138	83,138	97,699
Recorded Investment	67,765	67,765	86,562
Allowance For Loan Losses Allocated	2,685	2,685	13,769
Average Recorded Investment	74,620	78,285	83,087
Interest Income Recognized	327	1,009	2,011
Cash Basis Income Recognized	'	'	185
Impaired Financing Receivables with An Allowance Recorded | Residential Real Estate | Multi-Family	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	14,199	14,199	14,906
Recorded Investment	12,490	12,490	14,906
Allowance For Loan Losses Allocated	395	395	1,643
Average Recorded Investment	12,713	13,372	11,187
Interest Income Recognized	51	158	468
Impaired Financing Receivables with An Allowance Recorded | Residential Real Estate | 1-4 Family	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	28,795	28,795	31,021
Recorded Investment	26,778	26,778	28,092
Allowance For Loan Losses Allocated	651	651	2,998
Average Recorded Investment	27,283	27,963	27,404
Interest Income Recognized	140	358	787
Cash Basis Income Recognized	'	'	9
Impaired Financing Receivables with An Allowance Recorded | Consumer	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	202	202	142
Recorded Investment	134	134	142
Allowance For Loan Losses Allocated	68	68	68
Average Recorded Investment	122	146	29
Interest Income Recognized	1	2	'
Impaired Financing Receivables with An Allowance Recorded | Agriculture	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	'	'	10
Recorded Investment	'	'	10
Allowance For Loan Losses Allocated	'	'	5
Average Recorded Investment	'	3	6
Impaired Financing Receivables with An Allowance Recorded | Other	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Unpaid Principal Balance	514	514	524
Recorded Investment	515	515	524
Allowance For Loan Losses Allocated	'	'	11
Average Recorded Investment	516	520	533
Interest Income Recognized	$5	$13	$17

Types_of_Troubled_Debt_Restruc

Types of Troubled Debt Restructuring Loan Modification by Portfolio Segment Outstanding (Detail) (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
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	$93,223	'	$93,223	'	$117,808
TDR Loan Modifications during 12 months	389	5,699	3,535	45,258	'
Commercial | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	1,957	'	1,957	'	1,972
TDR Loan Modifications during 12 months	'	'	39	'	'
Commercial | Principal Deferral	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	875	'	875	'	887
Commercial | Interest Only Payments	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	'	'	'	'	958
TDR Loan Modifications during 12 months	'	'	'	1,019	'
Commercial Real Estate | Construction | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	6,639	'	6,639	'	9,293
TDR Loan Modifications during 12 months	'	'	1,291	849	'
Commercial Real Estate | Construction | Principal Deferral	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	499	'	499	'	'
TDR Loan Modifications during 12 months	'	'	499	'	'
Commercial Real Estate | Farmland | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	150	'	150	'	150
TDR Loan Modifications during 12 months	'	150	'	150	'
Commercial Real Estate | Farmland | Principal Deferral	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	3,139	'	3,139	'	3,163
Commercial Real Estate | Nonfarm nonresidential | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	45,189	'	45,189	'	59,146
TDR Loan Modifications during 12 months	'	5,549	388	16,700	'
Commercial Real Estate | Nonfarm nonresidential | Principal Deferral	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	'	'	'	'	1,195
TDR Loan Modifications during 12 months	'	'	'	1,196	'
Commercial Real Estate | Nonfarm nonresidential | Interest Only Payments	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	3,937	'	3,937	'	4,573
TDR Loan Modifications during 12 months	'	'	'	4,641	'
Residential Real Estate | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	'	'	'	'	14
Residential Real Estate | Multi-Family | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	11,113	'	11,113	'	13,087
TDR Loan Modifications during 12 months	'	'	'	12,879	'
Residential Real Estate | Multi-Family | Interest Only Payments	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	644	'	644	'	652
Residential Real Estate | 1-4 Family | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	18,490	'	18,490	'	22,194
TDR Loan Modifications during 12 months	363	'	1,254	7,440	'
Residential Real Estate | 1-4 Family | Principal Deferral	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
TDR Loan Modifications during 12 months	'	'	'	384	'
Other | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	514	'	514	'	524
Consumer | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	77	'	77	'	'
TDR Loan Modifications during 12 months	26	'	64	'	'
TDRs Performing to Modified Terms	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	43,968	'	43,968	'	77,344
TDR Loan Modifications during 12 months	389	5,699	2,244	40,801	'
TDRs Performing to Modified Terms | Commercial | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	1,957	'	1,957	'	1,972
TDR Loan Modifications during 12 months	'	'	39	'	'
TDRs Performing to Modified Terms | Commercial | Principal Deferral	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	'	'	'	'	887
TDRs Performing to Modified Terms | Commercial Real Estate | Construction | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	277	'	277	'	4,834
TDRs Performing to Modified Terms | Commercial Real Estate | Construction | Principal Deferral	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	499	'	499	'	'
TDR Loan Modifications during 12 months	'	'	499	'	'
TDRs Performing to Modified Terms | Commercial Real Estate | Farmland | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	150	'	150	'	150
TDR Loan Modifications during 12 months	'	150	'	150	'
TDRs Performing to Modified Terms | Commercial Real Estate | Farmland | Principal Deferral	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	701	'	701	'	725
TDRs Performing to Modified Terms | Commercial Real Estate | Nonfarm nonresidential | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	23,511	'	23,511	'	36,515
TDR Loan Modifications during 12 months	'	5,549	388	16,700	'
TDRs Performing to Modified Terms | Commercial Real Estate | Nonfarm nonresidential | Principal Deferral	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	'	'	'	'	1,195
TDR Loan Modifications during 12 months	'	'	'	1,196	'
TDRs Performing to Modified Terms | Commercial Real Estate | Nonfarm nonresidential | Interest Only Payments	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	2,448	'	2,448	'	2,466
TDR Loan Modifications during 12 months	'	'	'	2,467	'
TDRs Performing to Modified Terms | Residential Real Estate | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	'	'	'	'	14
TDRs Performing to Modified Terms | Residential Real Estate | Multi-Family | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	4,385	'	4,385	'	13,087
TDR Loan Modifications during 12 months	'	'	'	12,848	'
TDRs Performing to Modified Terms | Residential Real Estate | Multi-Family | Interest Only Payments	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	644	'	644	'	652
TDRs Performing to Modified Terms | Residential Real Estate | 1-4 Family | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	8,805	'	8,805	'	14,323
TDR Loan Modifications during 12 months	363	'	1,254	7,440	'
TDRs Performing to Modified Terms | Other | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	514	'	514	'	524
TDRs Performing to Modified Terms | Consumer | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	77	'	77	'	'
TDR Loan Modifications during 12 months	26	'	64	'	'
TDRs Not Performing to Modified Terms	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	49,255	'	49,255	'	40,464
TDR Loan Modifications during 12 months	'	'	1,291	4,457	'
TDRs Not Performing to Modified Terms | Commercial | Principal Deferral	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	875	'	875	'	'
TDRs Not Performing to Modified Terms | Commercial | Interest Only Payments	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	'	'	'	'	958
TDR Loan Modifications during 12 months	'	'	'	1,019	'
TDRs Not Performing to Modified Terms | Commercial Real Estate | Construction | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	6,362	'	6,362	'	4,459
TDR Loan Modifications during 12 months	'	'	1,291	849	'
TDRs Not Performing to Modified Terms | Commercial Real Estate | Farmland | Principal Deferral	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	2,438	'	2,438	'	2,438
TDRs Not Performing to Modified Terms | Commercial Real Estate | Nonfarm nonresidential | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	21,678	'	21,678	'	22,631
TDRs Not Performing to Modified Terms | Commercial Real Estate | Nonfarm nonresidential | Interest Only Payments	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	1,489	'	1,489	'	2,107
TDR Loan Modifications during 12 months	'	'	'	2,174	'
TDRs Not Performing to Modified Terms | Residential Real Estate | Multi-Family | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	6,728	'	6,728	'	'
TDR Loan Modifications during 12 months	'	'	'	31	'
TDRs Not Performing to Modified Terms | Residential Real Estate | 1-4 Family | Rate Reduction	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
Troubled Debt Restructuring	9,685	'	9,685	'	7,871
TDR Loan Modifications during 12 months	'	'	'	'	'
TDRs Not Performing to Modified Terms | Residential Real Estate | 1-4 Family | Principal Deferral	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'
TDR Loan Modifications during 12 months	'	'	'	$384	'

Loans_Additional_Information_D

Loans - Additional Information (Detail) (USD $)	9 Months Ended								9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2012
			Troubled Debt Restructurings Term Modification Three	Troubled Debt Restructurings Term Modification Three	Troubled Debt Restructurings Term Modification One	Troubled Debt Restructurings Term Modification One	Troubled Debt Restructurings Term Modification Two	Troubled Debt Restructurings Term Modification Two	Commercial Real Estate	Commercial	Residential Real Estate
											1-4 Family
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Percentage of Company's TDRs that were performing according to modified terms	'	'	63.00%	90.00%	47.00%	66.00%	100.00%	100.00%	'	'	'
Reserves to borrowers whose loan terms have been modified in TDRs outstanding	'	'	$336,000	$3,900,000	$3,500,000	$15,100,000	$36,000	$489,000	'	'	'
Commitment to lend additional amount to borrowers with outstanding loans classified as TDRs	'	'	'	'	262,000	259,000	'	'	'	'	'
TDRs defaulted on restructured loan	1,300,000	9,900,000	'	'	'	'	'	'	'	'	'
Past due period over which a default is considered to have occurred	'	'90 days	'	'	'	'	'	'	'	'	'
TDRs defaulted on restructured loan	'	'	'	'	'	'	'	'	6,900,000	1,200,000	1,700,000
Minimum outstanding loan balance for credit risk analysis	$500,000	'	'	'	'	'	'	'	'	'	'

Recorded_Investment_in_Nonaccr

Recorded Investment in Nonaccrual and Loans Past due 90 Days and Still on Accrual by Class of Loan (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual	$106,922	$94,517
Loans Past Due 90 Day And Over Still Accruing	'	86
Commercial	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual	3,084	2,437
Loans Past Due 90 Day And Over Still Accruing	'	36
Commercial Real Estate | Construction	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual	18,734	7,808
Commercial Real Estate | Farmland	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual	9,187	10,030
Commercial Real Estate | Nonfarm nonresidential	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual	40,394	46,036
Residential Real Estate | Multi-Family	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual	7,647	1,516
Residential Real Estate | 1-4 Family	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual	27,455	26,501
Loans Past Due 90 Day And Over Still Accruing	'	50
Consumer	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual	71	135
Agriculture	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual	332	54
Other	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual	$18	'

Aging_of_Recorded_Investment_i

Aging of Recorded Investment in Past Due Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	$10,018	$38,219
60 - 89 Days Past Due	7,582	20,303
90 Days And Over Past Due	'	86
Non-accrual	106,922	94,517
Total Past Due And Non-accrual	124,522	153,125
Commercial	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	4,290	1,279
60 - 89 Days Past Due	174	90
90 Days And Over Past Due	'	36
Non-accrual	3,084	2,437
Total Past Due And Non-accrual	7,548	3,842
Commercial Real Estate | Construction	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	'	10,510
60 - 89 Days Past Due	'	5,815
Non-accrual	18,734	7,808
Total Past Due And Non-accrual	18,734	24,133
Commercial Real Estate | Farmland	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	289	922
60 - 89 Days Past Due	97	58
Non-accrual	9,187	10,030
Total Past Due And Non-accrual	9,573	11,010
Commercial Real Estate | Nonfarm nonresidential	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	771	5,138
60 - 89 Days Past Due	5,968	13,037
Non-accrual	40,394	46,036
Total Past Due And Non-accrual	47,133	64,211
Residential Real Estate | Multi-Family	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	1,185	8,762
Non-accrual	7,647	1,516
Total Past Due And Non-accrual	8,832	10,278
Residential Real Estate | 1-4 Family	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	3,267	11,145
60 - 89 Days Past Due	1,219	1,221
90 Days And Over Past Due	'	50
Non-accrual	27,455	26,501
Total Past Due And Non-accrual	31,941	38,917
Consumer	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	198	310
60 - 89 Days Past Due	35	75
Non-accrual	71	135
Total Past Due And Non-accrual	304	520
Agriculture	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	18	153
60 - 89 Days Past Due	89	7
Non-accrual	332	54
Total Past Due And Non-accrual	439	214
Other	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual	18	'
Total Past Due And Non-accrual	$18	'

Risk_Category_of_Loans_by_Clas

Risk Category of Loans by Class of Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	$734,240,000	$899,092,000	$1,100,000,000	$1,300,000,000
Commercial	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	51,572,000	52,567,000	'	'
Commercial Real Estate	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	361,732,000	473,796,000	'	'
Commercial Real Estate | Construction	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	51,994,000	70,284,000	'	199,500,000
Commercial Real Estate | Farmland	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	73,159,000	80,825,000	'	'
Commercial Real Estate | Nonfarm nonresidential	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	236,579,000	322,687,000	'	'
Residential Real Estate	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	280,811,000	329,259,000	'	'
Residential Real Estate | Multi-Family	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	46,052,000	50,986,000	'	'
Residential Real Estate | 1-4 Family	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	234,759,000	278,273,000	'	'
Consumer	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	15,709,000	20,383,000	'	'
Agriculture	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	23,669,000	22,317,000	'	'
Other	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	747,000	770,000	'	'
Pass	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	364,720,000	437,886,000	'	'
Pass | Commercial	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	33,519,000	27,085,000	'	'
Pass | Commercial Real Estate | Construction	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	17,072,000	26,085,000	'	'
Pass | Commercial Real Estate | Farmland	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	45,172,000	47,017,000	'	'
Pass | Commercial Real Estate | Nonfarm nonresidential	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	87,574,000	122,603,000	'	'
Pass | Residential Real Estate | Multi-Family	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	15,230,000	18,387,000	'	'
Pass | Residential Real Estate | 1-4 Family	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	131,240,000	159,975,000	'	'
Pass | Consumer	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	13,845,000	17,232,000	'	'
Pass | Agriculture	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	20,853,000	19,256,000	'	'
Pass | Other	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	215,000	246,000	'	'
Watch	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	159,387,000	177,419,000	'	'
Watch | Commercial	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	8,203,000	10,153,000	'	'
Watch | Commercial Real Estate | Construction	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	11,404,000	21,713,000	'	'
Watch | Commercial Real Estate | Farmland	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	11,568,000	13,461,000	'	'
Watch | Commercial Real Estate | Nonfarm nonresidential	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	62,363,000	66,223,000	'	'
Watch | Residential Real Estate | Multi-Family	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	15,397,000	14,637,000	'	'
Watch | Residential Real Estate | 1-4 Family	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	46,734,000	47,030,000	'	'
Watch | Consumer	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	1,079,000	2,211,000	'	'
Watch | Agriculture	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	2,125,000	1,467,000	'	'
Watch | Other	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	514,000	524,000	'	'
Special Mention	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	9,249,000	34,700,000	'	'
Special Mention | Commercial	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	706,000	6,495,000	'	'
Special Mention | Commercial Real Estate | Construction	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	2,248,000	3,647,000	'	'
Special Mention | Commercial Real Estate | Farmland	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	879,000	3,532,000	'	'
Special Mention | Commercial Real Estate | Nonfarm nonresidential	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	2,982,000	14,955,000	'	'
Special Mention | Residential Real Estate | 1-4 Family	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	2,428,000	5,167,000	'	'
Special Mention | Consumer	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	6,000	35,000	'	'
Special Mention | Agriculture	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	'	869,000	'	'
Substandard	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	200,594,000	248,691,000	'	'
Substandard | Commercial	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	9,100,000	8,772,000	'	'
Substandard | Commercial Real Estate | Construction	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	21,270,000	18,839,000	'	'
Substandard | Commercial Real Estate | Farmland	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	15,540,000	16,815,000	'	'
Substandard | Commercial Real Estate | Nonfarm nonresidential	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	83,414,000	118,635,000	'	'
Substandard | Residential Real Estate | Multi-Family	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	15,425,000	17,962,000	'	'
Substandard | Residential Real Estate | 1-4 Family	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	54,357,000	66,101,000	'	'
Substandard | Consumer	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	779,000	842,000	'	'
Substandard | Agriculture	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	691,000	725,000	'	'
Substandard | Other	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	18,000	'	'	'
Doubtful	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	290,000	396,000	'	'
Doubtful | Commercial	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	44,000	62,000	'	'
Doubtful | Commercial Real Estate | Nonfarm nonresidential	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	246,000	271,000	'	'
Doubtful | Consumer	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Gross loans	'	$63,000	'	'

Major_Categories_of_Other_Real

Major Categories of Other Real Estate Owned (Detail) (USD $)	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Real Estate Properties [Line Items]	'	'	'	'	'	'
Other Real Estate Owned, Gross	$42,454	'	$44,825	'	'	'
Valuation allowance	-597	-747	-1,154	-1,795	-1,724	-1,667
Other real estate owned	41,857	'	43,671	48,837	'	41,449
Commercial Real Estate | Construction	'	'	'	'	'	'
Real Estate Properties [Line Items]	'	'	'	'	'	'
Other Real Estate Owned, Gross	20,546	'	22,912	'	'	'
Commercial Real Estate | Farmland	'	'	'	'	'	'
Real Estate Properties [Line Items]	'	'	'	'	'	'
Other Real Estate Owned, Gross	545	'	618	'	'	'
Commercial Real Estate | Other	'	'	'	'	'	'
Real Estate Properties [Line Items]	'	'	'	'	'	'
Other Real Estate Owned, Gross	14,410	'	15,577	'	'	'
Residential Real Estate | Multi-Family	'	'	'	'	'	'
Real Estate Properties [Line Items]	'	'	'	'	'	'
Other Real Estate Owned, Gross	517	'	200	'	'	'
Residential Real Estate | 1-4 Family	'	'	'	'	'	'
Real Estate Properties [Line Items]	'	'	'	'	'	'
Other Real Estate Owned, Gross	$6,436	'	$5,518	'	'	'

Other_Real_Estate_Owned_Valuat

Other Real Estate Owned Valuation Allowance Activity (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
OREO Valuation Allowance Activity:	'	'	'	'
Beginning balance	$747	$1,724	$1,154	$1,667
Provision to allowance	300	4,260	1,584	5,090
Write-downs	-450	-4,189	-2,141	-4,962
Ending balance	$597	$1,795	$597	$1,795

Net_Activity_Relating_to_Other

Net Activity Relating to Other Real Estate Owned Activity (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Real Estate Properties [Line Items]	'	'	'	'
OREO as of January 1	'	'	$43,671,000	$41,449,000
Real estate acquired	'	'	18,542,000	31,531,000
Valuation adjustments	-300,000	-4,260,000	-1,584,000	-5,090,000
Improvements	'	'	'	1,000
Loss on sale	169,000	-533,000	-190,000	-1,481,000
Proceeds from sale of properties	'	'	-18,582,000	-17,573,000
OREO as of September 30	41,857,000	48,837,000	41,857,000	48,837,000
Declining Market Values	'	'	'	'
Real Estate Properties [Line Items]	'	'	'	'
Valuation adjustments	'	'	($1,584,000)	($5,090,000)

Expenses_Related_to_Other_Real

Expenses Related to Other Real Estate Owned (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Real Estate Properties [Line Items]	'	'	'	'	'
Net loss (gain) on sales	($169)	$533	$190	$1,481	'
Provision to allowance	300	4,260	1,584	5,090	'
Operating expense	538	411	1,343	1,095	'
Total	$669	$5,204	$3,117	$7,666	$10,500

Scheduled_of_Deposits_by_Categ

Scheduled of Deposits by Category (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deposits [Line Items]	'	'
Non-interest bearing	$101,191	$114,310
Interest checking	71,851	87,234
Money market	77,292	63,715
Savings	37,622	39,227
Certificates of deposit	658,940	760,573
Total deposits	$946,896	$1,065,059

Deposits_Additional_Informatio

Deposits - Additional Information (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Deposit Liabilities [Line Items]	'	'
Time deposits of $100,000 or more	$279,300,000	$319,500,000
Deposits	946,896,000	1,065,059,000
Brokered	'	'
Deposit Liabilities [Line Items]	'	'
Deposits	'	$15,000,000

Scheduled_Maturities_of_Total_

Scheduled Maturities of Total Time Deposits (Detail) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Deposit Liabilities [Line Items]	'
Year 1	$378,763
Year 2	236,022
Year 3	25,836
Year 4	10,350
Year 5	7,930
Thereafter	39
Time Deposits, Total	$658,940

Advances_from_Federal_Home_Loa

Advances from Federal Home Loan Bank (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'	'
Monthly amortizing advances with fixed rates from 0.00% to 5.25% and maturities ranging from 2013 through 2033, averaging 3.13% for 2013	$4,741	$5,604

Advances_from_Federal_Home_Loa1

Advances from Federal Home Loan Bank (Parenthetical) (Detail)	9 Months Ended
	Sep. 30, 2013
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'
Advances from federal home loan bank, fixed rate from	0.00%
Advances from federal home loan bank, fixed rate to	5.25%
Advances from federal home loan bank, average rate	3.13%
Advances from federal home loan bank, maturities from	'2013
Advances from federal home loan bank, maturities through	'2033

Advances_from_Federal_Home_Loa2

Advances from Federal Home Loan Bank - Additional Information (Detail) (Federal Home Loan Bank Advances, USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'
Additional borrowing capacity with the Federal Home Loan Bank	16.4
Maximum	'
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'
New advances maturity period	'1 year

Fair_Values_Measurement_Additi

Fair Values Measurement - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Fair Value Measurements [Line Items]	'	'
Estimated discounts for cost to sell	10.00%	'
Other debt security valuation, coupon rate	6.50%	'
Other debt security valuation, estimated current market rate	11.00%	'
Impaired loans, carrying amount	$136,300,000	$166,200,000
Impaired loans, valuation allowance	4,762,000	21,034,000
Other real estate owned, net carrying amount	41,900,000	43,700,000
Other real estate owned, write-downs	$1,600,000	'
Other real estate owned, net	'	'
Fair Value Measurements [Line Items]	'	'
Estimated discounts for cost to sell	10.00%	'
Other real estate owned, net | Routine Real Estate Collateral	'	'
Fair Value Measurements [Line Items]	'	'
Internal discount rate used in fair value evaluation	10.00%	'
Other real estate owned, net | Thin Trading Market or Specialized Collateral	'	'
Fair Value Measurements [Line Items]	'	'
Internal discount rate used in fair value evaluation	30.00%	'
Impaired Loans | Routine Real Estate Collateral	'	'
Fair Value Measurements [Line Items]	'	'
Internal discount rate used in fair value evaluation	10.00%	'
Impaired Loans | Thin Trading Market or Specialized Collateral	'	'
Fair Value Measurements [Line Items]	'	'
Internal discount rate used in fair value evaluation	30.00%	'
Impaired Loans | Minimum	'	'
Fair Value Measurements [Line Items]	'	'
Internal discount rate used in fair value evaluation	10.00%	'
Impaired Loans | Maximum	'	'
Fair Value Measurements [Line Items]	'	'
Internal discount rate used in fair value evaluation	33.00%	'

Financial_Assets_Measured_at_F

Financial Assets Measured at Fair Value on Recurring Basis (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	$193,981	$178,476
Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	193,804	176,630
Equity	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	177	1,846
U.S. Government and federal agency | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	27,913	6,133
Agency mortgage-backed: residential | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	84,573	95,182
State and municipal | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	57,147	54,733
Corporate bonds | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	23,565	19,964
Other | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	606	618
Fair Value, Measurements, Recurring	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	193,981	178,476
Fair Value, Measurements, Recurring | Equity	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	177	1,846
Fair Value, Measurements, Recurring | U.S. Government and federal agency | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	27,913	6,133
Fair Value, Measurements, Recurring | Agency mortgage-backed: residential | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	84,573	95,182
Fair Value, Measurements, Recurring | State and municipal | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	57,147	54,733
Fair Value, Measurements, Recurring | Corporate bonds | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	23,565	19,964
Fair Value, Measurements, Recurring | Other | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	606	618
Fair Value, Measurements, Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	177	1,846
Fair Value, Measurements, Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Equity	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	177	1,846
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	193,198	176,012
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. Government and federal agency | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	27,913	6,133
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Agency mortgage-backed: residential | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	84,573	95,182
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | State and municipal | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	57,147	54,733
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate bonds | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	23,565	19,964
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	606	618
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Other | Debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities	$606	$618

Reconciliation_of_all_Assets_M

Reconciliation of all Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs Level 3 (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
State and Municipal Securities	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Balances of recurring Level 3 assets at January 1	'	$1,173
Included in other comprehensive income (loss)	'	'
Sales	'	-1,173
Balance of recurring Level 3 assets at September 30	'	'
Other	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Balances of recurring Level 3 assets at January 1	618	606
Included in other comprehensive income (loss)	-12	-11
Sales	'	'
Balance of recurring Level 3 assets at September 30	$606	$595

Financial_Assets_Measured_at_F1

Financial Assets Measured at Fair Value on Non Recurring Basis (Detail) (Fair Value, Measurements, Nonrecurring, USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Other real estate owned, net | Commercial Real Estate | Construction	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	$20,257	$22,323
Other real estate owned, net | Commercial Real Estate | Farmland	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	537	602
Other real estate owned, net | Commercial Real Estate | Other	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	14,208	15,175
Other real estate owned, net | Residential Real Estate | Multi-Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	509	195
Other real estate owned, net | Residential Real Estate | 1-4 Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	6,346	5,376
Impaired Loans | Commercial	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	3,289	3,799
Impaired Loans | Commercial Real Estate | Construction	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	18,928	23,912
Impaired Loans | Commercial Real Estate | Farmland	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	5,412	5,722
Impaired Loans | Commercial Real Estate | Other	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	65,080	72,793
Impaired Loans | Residential Real Estate | Multi-Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	12,095	13,263
Impaired Loans | Residential Real Estate | 1-4 Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	26,127	25,094
Impaired Loans | Consumer	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	66	74
Impaired Loans | Other	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	515	513
Impaired Loans | Agriculture	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	5
Quoted Prices In Active Markets for Identical Assets (Level 1) | Other real estate owned, net | Commercial Real Estate | Construction	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Other real estate owned, net | Commercial Real Estate | Farmland	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Other real estate owned, net | Commercial Real Estate | Other	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Other real estate owned, net | Residential Real Estate | Multi-Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Other real estate owned, net | Residential Real Estate | 1-4 Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Impaired Loans | Commercial	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Impaired Loans | Commercial Real Estate | Construction	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Impaired Loans | Commercial Real Estate | Farmland	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Impaired Loans | Commercial Real Estate | Other	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Impaired Loans | Residential Real Estate | Multi-Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Impaired Loans | Residential Real Estate | 1-4 Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Impaired Loans | Consumer	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Impaired Loans | Other	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Quoted Prices In Active Markets for Identical Assets (Level 1) | Impaired Loans | Agriculture	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Significant Other Observable Inputs (Level 2) | Other real estate owned, net | Commercial Real Estate | Construction	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	'	'
Significant Other Observable Inputs (Level 2) | Other real estate owned, net | Commercial Real Estate | Farmland	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	'	'
Significant Other Observable Inputs (Level 2) | Other real estate owned, net | Commercial Real Estate | Other	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	'	'
Significant Other Observable Inputs (Level 2) | Other real estate owned, net | Residential Real Estate | Multi-Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	'	'
Significant Other Observable Inputs (Level 2) | Other real estate owned, net | Residential Real Estate | 1-4 Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	'	'
Significant Other Observable Inputs (Level 2) | Impaired Loans | Commercial	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Significant Other Observable Inputs (Level 2) | Impaired Loans | Commercial Real Estate | Construction	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Significant Other Observable Inputs (Level 2) | Impaired Loans | Commercial Real Estate | Farmland	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Significant Other Observable Inputs (Level 2) | Impaired Loans | Commercial Real Estate | Other	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Significant Other Observable Inputs (Level 2) | Impaired Loans | Residential Real Estate | Multi-Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Significant Other Observable Inputs (Level 2) | Impaired Loans | Residential Real Estate | 1-4 Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Significant Other Observable Inputs (Level 2) | Impaired Loans | Consumer	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Significant Other Observable Inputs (Level 2) | Impaired Loans | Other	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Significant Other Observable Inputs (Level 2) | Impaired Loans | Agriculture	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	'
Significant Unobservable Inputs (Level 3) | Other real estate owned, net | Commercial Real Estate | Construction	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	20,257	22,323
Significant Unobservable Inputs (Level 3) | Other real estate owned, net | Commercial Real Estate | Farmland	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	537	602
Significant Unobservable Inputs (Level 3) | Other real estate owned, net | Commercial Real Estate | Other	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	14,208	15,175
Significant Unobservable Inputs (Level 3) | Other real estate owned, net | Residential Real Estate | Multi-Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	509	195
Significant Unobservable Inputs (Level 3) | Other real estate owned, net | Residential Real Estate | 1-4 Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other Real Estate Owned	6,346	5,376
Significant Unobservable Inputs (Level 3) | Impaired Loans | Commercial	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	3,289	3,799
Significant Unobservable Inputs (Level 3) | Impaired Loans | Commercial Real Estate | Construction	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	18,928	23,912
Significant Unobservable Inputs (Level 3) | Impaired Loans | Commercial Real Estate | Farmland	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	5,412	5,722
Significant Unobservable Inputs (Level 3) | Impaired Loans | Commercial Real Estate | Other	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	65,080	72,793
Significant Unobservable Inputs (Level 3) | Impaired Loans | Residential Real Estate | Multi-Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	12,095	13,263
Significant Unobservable Inputs (Level 3) | Impaired Loans | Residential Real Estate | 1-4 Family	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	26,127	25,094
Significant Unobservable Inputs (Level 3) | Impaired Loans | Consumer	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	66	74
Significant Unobservable Inputs (Level 3) | Impaired Loans | Other	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	515	513
Significant Unobservable Inputs (Level 3) | Impaired Loans | Agriculture	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans fair value	'	$5

Qualitative_Information_About_

Qualitative Information About Level Three Fair Value Measurements for Financial Instruments Measured at Fair Value on Non-Recurring Basis (Detail) (Fair Value, Measurements, Nonrecurring, USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Impaired Loans | Commercial	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Fair Value	$3,289	$3,799
Valuation Technique(s)	'Market value approach	'Market value approach
Unobservable Input(s)	'Adjustment for receivables and inventory discounts	'Adjustment for receivables and inventory discounts
Impaired loans - Commercial, Capitalization rate	24.00%	24.00%
Impaired Loans | Commercial | Minimum	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Impaired loans - Commercial, Capitalization rate	16.00%	16.00%
Impaired Loans | Commercial | Maximum	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Impaired loans - Commercial, Capitalization rate	32.00%	32.00%
Impaired Loans | Commercial Real Estate	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Fair Value	89,420	89,461
Valuation Technique(s)	'Sales comparison approach	'Sales comparison approach
Unobservable Input(s)	'Adjustment for differences between the comparable sales	'Adjustment for differences between the comparable sales
Impaired loans - Residential real estate, Adjustment for differences between the comparable sales	20.00%	19.00%
Impaired Loans | Commercial Real Estate | Minimum	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Impaired loans - Residential real estate, Adjustment for differences between the comparable sales	0.00%	0.00%
Impaired Loans | Commercial Real Estate | Maximum	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Impaired loans - Residential real estate, Adjustment for differences between the comparable sales	69.00%	69.00%
Impaired Loans | Residential Real Estate	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Fair Value	38,222	38,357
Valuation Technique(s)	'Sales comparison approach	'Sales comparison approach
Unobservable Input(s)	'Adjustment for differences between the comparable sales	'Adjustment for differences between the comparable sales
Impaired loans - Residential real estate, Adjustment for differences between the comparable sales	15.00%	15.00%
Impaired Loans | Residential Real Estate | Minimum	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Impaired loans - Residential real estate, Adjustment for differences between the comparable sales	0.00%	0.00%
Impaired Loans | Residential Real Estate | Maximum	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Impaired loans - Residential real estate, Adjustment for differences between the comparable sales	50.00%	38.00%
Other real estate owned, net | Commercial Real Estate	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Fair Value	35,002	38,100
Valuation Technique(s)	'Sales comparison approach	'Sales comparison approach
Unobservable Input(s)	'Adjustment for differences between the comparable sales	'Adjustment for differences between the comparable sales
Impaired loans - Commercial, Capitalization rate	11.00%	12.00%
Impaired loans - Residential real estate, Adjustment for differences between the comparable sales	21.00%	18.00%
Other real estate owned, net | Commercial Real Estate | Income Approach Valuation Technique	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Valuation Technique(s)	'Income comparison approach	'Income comparison approach
Unobservable Input(s)	'Discount or capitalization rate	'Discount or capitalization rate
Other real estate owned, net | Commercial Real Estate | Minimum	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Impaired loans - Commercial, Capitalization rate	7.00%	9.00%
Impaired loans - Residential real estate, Adjustment for differences between the comparable sales	3.00%	3.00%
Other real estate owned, net | Commercial Real Estate | Maximum	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Impaired loans - Commercial, Capitalization rate	16.00%	16.00%
Impaired loans - Residential real estate, Adjustment for differences between the comparable sales	51.00%	50.00%
Other real estate owned, net | Residential Real Estate	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Impaired loans - Residential real estate, Adjustment for differences between the comparable sales	12.00%	9.00%
Other real estate owned, net | Residential Real Estate | Minimum	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Impaired loans - Residential real estate, Adjustment for differences between the comparable sales	4.00%	0.00%
Other real estate owned, net | Residential Real Estate | Maximum	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Impaired loans - Residential real estate, Adjustment for differences between the comparable sales	34.00%	30.00%
Other real estate owned, net | Residential Mortgage	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Fair Value	$6,855	$5,571
Valuation Technique(s)	'Sales comparison approach	'Sales comparison approach
Unobservable Input(s)	'Adjustment for differences between the comparable sales	'Adjustment for differences between the comparable sales

Carrying_Amount_and_Estimated_

Carrying Amount and Estimated Fair Values of Financial Instruments (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financial assets	'	'
Securities available for sale	$193,981	$178,476
Carrying Amount	'	'
Financial assets	'	'
Cash and cash equivalents	53,433	49,572
Securities available for sale	193,981	178,476
Federal Home Loan Bank stock	10,072	10,072
Mortgage loans held for sale	123	507
Loans, net	702,486	842,412
Accrued interest receivable	3,964	5,138
Financial liabilities	'	'
Deposits	946,896	1,065,059
Securities sold under agreements to repurchase	3,722	2,634
Federal Home Loan Bank advances	4,741	5,604
Accrued interest payable	2,375	2,104
Carrying Amount | Subordinated capital notes	'	'
Financial liabilities	'	'
Subordinated capital notes	6,075	6,975
Carrying Amount | Junior subordinated debentures	'	'
Financial liabilities	'	'
Subordinated capital notes	25,000	25,000
Quoted Prices In Active Markets for Identical Assets (Level 1)	'	'
Financial assets	'	'
Cash and cash equivalents	44,674	41,938
Securities available for sale	177	1,846
Financial liabilities	'	'
Deposits	98,885	114,310
Significant Other Observable Inputs (Level 2)	'	'
Financial assets	'	'
Cash and cash equivalents	8,759	7,634
Securities available for sale	193,198	176,012
Mortgage loans held for sale	123	507
Accrued interest receivable	1,198	1,150
Financial liabilities	'	'
Deposits	848,738	955,216
Securities sold under agreements to repurchase	3,722	2,634
Federal Home Loan Bank advances	4,743	5,607
Accrued interest payable	1,037	1,173
Significant Unobservable Inputs (Level 3)	'	'
Financial assets	'	'
Securities available for sale	606	618
Loans, net	719,094	853,996
Accrued interest receivable	2,766	3,988
Financial liabilities	'	'
Accrued interest payable	1,338	931
Significant Unobservable Inputs (Level 3) | Subordinated capital notes	'	'
Financial liabilities	'	'
Subordinated capital notes	5,789	6,599
Significant Unobservable Inputs (Level 3) | Junior subordinated debentures	'	'
Financial liabilities	'	'
Subordinated capital notes	13,550	13,821
Fair Value	'	'
Financial assets	'	'
Cash and cash equivalents	53,433	49,572
Securities available for sale	193,981	178,476
Mortgage loans held for sale	123	507
Loans, net	719,094	853,996
Accrued interest receivable	3,964	5,138
Financial liabilities	'	'
Deposits	947,623	1,069,526
Securities sold under agreements to repurchase	3,722	2,634
Federal Home Loan Bank advances	4,743	5,607
Accrued interest payable	2,375	2,104
Fair Value | Subordinated capital notes	'	'
Financial liabilities	'	'
Subordinated capital notes	5,789	6,599
Fair Value | Junior subordinated debentures	'	'
Financial liabilities	'	'
Subordinated capital notes	$13,550	$13,821

Deferred_Tax_Assets_and_Liabil

Deferred Tax Assets and Liabilities (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred tax assets:	'	'
Net operating loss carry-forward	$25,993	$15,051
Allowance for loan losses	11,114	19,838
Other real estate owned write-down	9,854	10,408
Alternative minimum tax credit carry-forward	692	692
Net assets from acquisitions	635	592
Other than temporary impairment on securities	374	374
Net unrealized loss on securities available for sale	968	'
New market tax credit carry-forward	208	208
Amortization of non-compete agreements	17	19
Other	981	936
Deferred Tax Assets, Gross, Total	50,836	48,118
Deferred tax liabilities:	'	'
FHLB stock dividends	1,276	1,276
Fixed assets	322	409
Originated mortgage servicing rights	81	98
Net unrealized gain on securities available for sale	'	1,858
Other	498	549
Deferred Tax Liabilities, Net, Total	2,177	4,190
Net deferred tax assets before valuation allowance	48,659	43,928
Valuation allowance	-48,659	-43,928
Net deferred tax asset	'	'

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	Dec. 31, 2011
In Millions, unless otherwise specified
Income Taxes [Line Items]	'
Available carry-back amount	$40

Stock_Plans_and_Stock_Based_Co2

Stock Plans and Stock Based Compensation - Additional Information (Detail) (USD $)

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

31-May-06

Sep. 30, 2013

16-May-12

15-May-06

31-May-06

31-May-06

Sep. 30, 2013

Feb. 23, 2006

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

31-May-13

Unvested Shares

Unvested Shares

Unvested Shares

2006 Non-Employee Directors Stock Ownership Incentive Plan

2006 Non-Employee Directors Stock Ownership Incentive Plan

2006 Non-Employee Directors Stock Ownership Incentive Plan

2006 Non-Employee Directors Stock Ownership Incentive Plan

2006 Non-Employee Directors Stock Ownership Incentive Plan

2006 Non-Employee Directors Stock Ownership Incentive Plan

2006 Stock Incentive Plan

2006 Stock Incentive Plan

2006 Stock Incentive Plan

2006 Stock Incentive Plan

2006 Stock Incentive Plan

2006 Stock Incentive Plan

Non Employee Director

Employee

Director

Equity Option

Unvested Shares

Unvested Shares

Unvested Shares

Unvested Shares

Amendment

Minimum

Maximum

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares authorized

'

'

'

'

'

'

'

400,000

100,000

'

'

'

1,263,050

'

'

'

800,000

Unvested shares granted

'

'

245,909

'

'

'

'

'

'

'

'

'

'

793,095

'

'

'

Shares remaining available for issue

113,357

'

'

'

'

'

'

'

'

'

'

343,829

'

'

'

'

'

Award vesting period

'

'

'

'

'

'

'

'

'

'3 years

'3 years

'

'

'

'3 years

'10 years

'

Term of options

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

Restricted shares award, fair market value

'

'

'

'

'

'

$25,000

'

'

'

'

'

'

'

'

'

'

Fair value of unvested shares issued

'

'

'

820,000

155,000

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of unvested shares issued per weighted-average share

'

'

'

$1.18

$0.85

'

'

'

'

'

'

'

'

'

'

'

'

Stock-based compensation

$391,000

$338,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Summary_of_Unvested_Share_Acti

Summary of Unvested Share Activity (Detail) (Unvested Shares, Stock Incentive Plan, USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Unvested Shares | Stock Incentive Plan	'	'
Shares	'	'
Outstanding, beginning	153,316	96,688
Granted	693,214	97,197
Vested	-22,113	-27,362
Forfeited	-31,322	-13,207
Outstanding, ending	793,095	153,316
Weighted Average Grant Price	'	'
Outstanding, beginning	$5.92	$13.40
Granted	$1.18	$1.74
Vested	$12.19	$13.04
Forfeited	$6.84	$15.22
Outstanding, ending	$1.57	$5.92

Summary_of_Unvested_Share_Acti1

Summary of Unvested Share Activity for Non-Employee Directors (Detail) (Unvested shares, Non Employee Director, USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Unvested shares | Non Employee Director	'	'
Shares	'	'
Outstanding, beginning	80,078	3,538
Granted	182,355	93,943
Vested	-16,524	-17,403
Forfeited	'	'
Outstanding, ending	245,909	80,078
Weighted Average Exercise Price	'	'
Outstanding, beginning	$1.77	$7.91
Granted	$0.85	$1.65
Vested	$2.02	$2.37
Forfeited	'	'
Outstanding, ending	$1.07	$1.77

Summary_of_Stock_Option_Activi

Summary of Stock Option Activity (Detail) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Options	'	'
Outstanding, beginning	'	29,530
Forfeited	'	'
Expired	'	-29,530
Outstanding, ending	'	'
Weighted Average Exercise Price	'	'
Outstanding, beginning	'	$19.88
Forfeited	'	'
Expired	'	$19.88
Outstanding, ending	'	'

Unrecognized_Stock_Based_Compe

Unrecognized Stock Based Compensation Expense Related to Unvested Shares (Detail) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
October 2013 - December 2013	$216
2014	522
2015	397
2016	240
2017 & thereafter	$41

Computation_of_Basic_and_Dilut

Computation of Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]	'	'	'	'	'	'
Net income (loss)	$298	($27,732)	($1,080)	($26,079)	'	'
Less:	'	'	'	'	'	'
Preferred stock dividends	437	437	1,311	1,312	'	'
Accretion of Series A preferred stock discount	45	44	135	134	'	'
Earnings (loss) allocated to unvested shares/Series C preferred	16	1,264	174	1,095	'	'
Net income (loss) allocated to common shareholders, basic and diluted	-168	-26,949	-2,352	-26,430	33,400	105,200
Basic	'	'	'	'	'	'
Weighted average common shares outstanding	11,592,959	11,751,818	11,701,396	11,732,835	'	'
Basic earnings (loss) per common share	($0.01)	($2.29)	($0.20)	($2.25)	'	'
Diluted	'	'	'	'	'	'
Add: Dilutive effects of assumed exercises of common and Preferred Series C stock warrants	'	'	'	'	'	'
Weighted average common shares and potential common shares	11,592,959	11,751,818	11,701,396	11,732,835	'	'
Diluted earnings (loss) per common share	($0.01)	($2.29)	($0.20)	($2.25)	'	'
Unvested Shares	'	'	'	'	'	'
Less:	'	'	'	'	'	'
Earnings (loss) allocated to unvested shares/Series C preferred	-11	-501	-107	-345	'	'
Unvested shares	'	'	'	'	'	'
Basic	'	'	'	'	'	'
Weighted average common shares outstanding	776,774	218,505	535,224	153,306	'	'
Series C Preferred Stock	'	'	'	'	'	'
Less:	'	'	'	'	'	'
Earnings (loss) allocated to unvested shares/Series C preferred	($5)	($763)	($67)	($750)	'	'
Basic	'	'	'	'	'	'
Weighted average common shares outstanding	332,894	332,894	332,894	332,894	'	'
Common Stock and Series C Preferred Stock | Unvested shares	'	'	'	'	'	'
Basic	'	'	'	'	'	'
Weighted average common shares including unvested common shares outstanding	12,702,627	12,303,217	12,569,514	12,219,035	'	'

Earnings_or_Loss_Per_Share_Add

Earnings or Loss Per Share - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Common Stock	'	'
Earnings Per Share Disclosure [Line Items]	'	'
Warrant exercise price	$15.88	$15.88
Nonvoting Common Stock	'	'
Earnings Per Share Disclosure [Line Items]	'	'
Warrant exercise price	$11.50	$11.50
Warrant | Common Stock	'	'
Earnings Per Share Disclosure [Line Items]	'	'
Shares/warrants of common stock not considered in computing diluted earnings per share	330,561	330,561
Warrant | Nonvoting Common Stock	'	'
Earnings Per Share Disclosure [Line Items]	'	'
Shares/warrants of common stock not considered in computing diluted earnings per share	1,449,459	1,449,459

Capital_Requirements_and_Restr2

Capital Requirements and Restrictions on Retained Earnings - Additional Information (Detail) (USD $)

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Dec. 31, 2012

Oct. 31, 2012

Jun. 24, 2011

Sep. 30, 2013

Dec. 31, 2012

Jun. 24, 2011

Sep. 30, 2013

Dec. 31, 2012

Jun. 24, 2011

In Millions, unless otherwise specified

PBI Bank

PBI Bank

Consent order

Consent order

Consent order

Consent order

Consent order

Consent order

Consent order

Consent order

Construction and development loans

Construction and development loans

Construction and development loans

Non-owner occupied commercial real estate loans

Non-owner occupied commercial real estate loans

Non-owner occupied commercial real estate loans

Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Tier I leverage ratio, regulatory minimum

4.00%

9.00%

'

'

9.00%

9.00%

'

'

'

'

'

'

Total risk-based capital, regulatory minimum

8.00%

12.00%

'

'

12.00%

12.00%

'

'

'

'

'

'

Minimum substandard asset subject to risk position reduction

'

'

'

'

'

$1

'

'

'

'

'

'

Maximum concentration of loans to total risk based capital

'

'

'

'

'

'

75.00%

75.00%

75.00%

250.00%

250.00%

250.00%

Maximum asset growth rate, quarterly

'

'

'

'

'

5.00%

'

'

'

'

'

'

Maximum asset growth rate, annually

'

'

'

'

'

10.00%

'

'

'

'

'

'

Tier 1 leverage ratio

'

'

6.40%

5.37%

'

'

'

'

'

'

'

'

Total risk-based capital

'

'

11.04%

9.82%

'

'

'

'

'

'

'

'

Ratios_of_Tier_One_Capital_and

Ratios of Tier One Capital and Total Capital to Risk-Adjusted Assets and Leverage Ratios (Detail)	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012
			Porter Bancorp	Porter Bancorp	PBI Bank	PBI Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'	'	'	'	'
Tier I Capital, regulatory minimum	4.00%	'	'	'	'	'
Total risk-based capital, regulatory minimum	8.00%	12.00%	'	'	'	'
Tier I leverage ratio, regulatory minimum	4.00%	9.00%	'	'	'	'
Tier I Capital, Well-Capitalized minimum	6.00%	'	'	'	'	'
Total risk-based capital, Well-Capitalized minimum	10.00%	'	'	'	'	'
Tier I leverage ratio, Well-Capitalized minimum	5.00%	'	'	'	'	'
Tier 1 Capital	'	'	7.19%	6.46%	8.94%	7.71%
Total risk-based capital	'	'	10.78%	9.81%	11.04%	9.82%
Tier 1 leverage ratio	'	'	5.15%	4.50%	6.40%	5.37%

Contingencies_Additional_Infor

Contingencies - Additional Information (Detail) (USD $)	1 Months Ended	9 Months Ended	12 Months Ended		1 Months Ended		12 Months Ended	9 Months Ended
	Jun. 30, 2010	Sep. 30, 2013	Dec. 31, 2010	Jul. 16, 2013	Jul. 16, 2013	Jul. 16, 2013	Dec. 31, 2010	Sep. 30, 2013	Sep. 30, 2013
	Plaintiff			Scenario, Forecast	Scenario, Forecast	Scenario, Forecast	Clinton Group, Inc.	Minimum	Maximum
					Compensatory Damages	Punitive Damages
Commitments and Contingencies Disclosure [Line Items]	'	'	'	'	'	'	'	'	'
Accrued litigation liability	'	$1,800,000	'	'	'	'	'	'	'
Damages awarding to plaintiff	'	'	'	'	1,515,000	5,500,000	'	'	'
Total amount reinstated if the conveyance agreement is rescinded	'	'	'	26,000,000	'	'	'	'	'
Number of Plaintiffs	3	'	'	'	'	'	'	'	'
Equity and warrants issued in private placement	'	'	32,000,000	'	'	'	5,000,016	'	'
Loss contingency damage sought by plaintiff	'	'	'	'	'	'	'	$4,500,000	$5,000,016
Loss Contingency damage sought by plaintiff, description	'	'The plaintiff seeks damages in an amount in excess of $4,500,000, or the difference between the $5,000,016 purchase price and the value of the securities when sold by the plaintiff, plus interest at the applicable statutory rate, costs and reasonable attorneys' fees.	'	'	'	'	'	'	'