BankGuam Holding (BKGM) 10-Q 8 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013
Document And Entity Information [Abstract]	'
Document Type	'10-Q
Amendment Flag	'false
Document Period End Date	30-Sep-13
Document Fiscal Year Focus	'2013
Document Fiscal Period Focus	'Q3
Entity Registrant Name	'BankGuam Holding Co
Entity Central Index Key	'0001527383
Current Fiscal Year End Date	'--12-31
Entity Filer Category	'Smaller Reporting Company
Entity Common Stock, Shares Outstanding	8,792,634

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Condition (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
ASSETS	'	'
Cash and due from banks	$21,960	$36,575
Federal Funds sold	5,000	5,000
Interest bearing deposits in banks	221,877	32,614
Total cash and cash equivalents	248,837	74,189
Restricted cash	400	150
Investment securities available for sale, at fair value	172,834	273,522
Investment securities held to maturity, at amortized cost	91,460	58,125
Federal Home Loan Bank stock, at cost	2,101	2,159
Loans, net of allowance for loan losses (9/30/13: $11,995 and 12/31/12: $12,228)	845,612	748,832
Accrued interest receivable	4,318	3,599
Premises and equipment, net	17,381	17,712
Goodwill	783	783
Other assets	31,564	32,310
Total assets	1,415,290	1,211,381
Deposits:	'	'
Non-interest bearing	308,359	279,322
Interest bearing	1,005,964	823,218
Total deposits	1,314,323	1,102,540
Accrued interest payable	165	161
Borrowings	0	10,145
Other liabilities	7,805	4,111
Total liabilities	1,322,293	1,116,957
Commitments and contingencies (Note 6)	'	'
Stockholders' equity:	'	'
Common stock $0.2083 par value; 48,000 shares authorized; 8,825 and 8,814 shares issued and 8,793 and 8,782 shares outstanding at 9/30/13 and 12/31/12, respectively	1,846	1,844
Additional paid-in capital	15,390	15,304
Retained earnings	80,070	76,092
Accumulated other comprehensive (loss) income	-4,019	1,474
Stockholders' equity excluding treasury stock	93,287	94,714
Common stock in treasury, at cost (32 shares)	-290	-290
Total stockholders' equity	92,997	94,424
Total liabilities and stockholders' equity	$1,415,290	$1,211,381

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Condition (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Per Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Loans, net of allowance for loan losses	$11,995	$12,228
Common stock, par value	$0.21	$0.21
Common stock, shares authorized	48,000	48,000
Common stock, shares issued	8,825	8,814
Common stock, shares outstanding	8,793	8,782
Common stock in treasury, shares	32	32

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Income (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	$15,080	$14,074	$43,452	$42,544
Investment securities	1,179	1,466	3,817	4,132
Federal Funds sold	2	1	5	5
Deposits with banks	51	78	181	245
Total interest income	16,312	15,619	47,455	46,926
Interest expense:	'	'	'	'
Time deposits	68	68	195	200
Savings deposits	1,054	1,239	3,377	3,606
Other borrowed funds	0	100	81	298
Total interest expense	1,122	1,407	3,653	4,104
Net interest income	15,190	14,212	43,802	42,822
Provision for loan losses	900	975	1,195	2,925
Net interest income, after provision for loan losses	14,290	13,237	42,607	39,897
Non-interest income:	'	'	'	'
Service charges and fees	1,109	985	3,354	3,033
Investment securities gains, net	56	243	506	423
Income from merchant services	457	413	1,424	1,506
Income from cardholders	147	191	832	977
Wire transfer fees	167	167	503	499
Trustee fees	165	196	429	533
Other income	473	515	1,540	1,591
Total non-interest income	2,574	2,710	8,588	8,562
Non-interest expenses:	'	'	'	'
Salaries and employee benefits	6,672	6,233	19,069	18,336
Occupancy	1,785	1,567	5,158	4,654
Furniture and equipment	1,489	1,751	4,510	4,552
Insurance	420	442	1,258	1,313
Telecommunications	362	403	1,099	1,153
Federal Deposit Insurance Corporation assessment	283	266	834	751
Contract services	288	216	998	1,063
Stationery & supplies	202	202	584	682
Professional services	379	492	1,047	1,084
Education	139	151	554	377
General, administrative and other	1,503	1,543	5,747	5,181
Total non-interest expenses	13,522	13,266	40,858	39,146
Income before income taxes	3,342	2,681	10,337	9,313
Income tax expense	1,007	710	3,063	2,553
Net income	$2,335	$1,971	$7,274	$6,760
Earnings per share:	'	'	'	'
Basic	$0.27	$0.22	$0.83	$0.77
Diluted	$0.27	$0.22	$0.83	$0.77
Dividends declared per share	$0.13	$0.13	$0.38	$0.38
Basic weighted average shares	8,793	8,779	8,788	8,779
Diluted weighted average shares	8,798	8,780	8,793	8,780

Condensed_Consolidated_Stateme3

Condensed 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
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Net income	$2,335	$1,971	$7,274	$6,760
Other comprehensive income (loss) components, net of tax effects:	'	'	'	'
Unrealized holding gain (loss) on available-for-sale securities arising during the period	-1,592	867	-5,103	2,011
Reclassification for gains (losses) realized on available-for-sale securities	-56	243	-506	423
Net change in unrealized holding loss on held-to-maturity securities during the period	50	36	116	125
Total other comprehensive income (loss)	-1,598	1,146	-5,493	2,559
Comprehensive income (loss)	$737	$3,117	$1,781	$9,319

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:	'	'
Net income:	$7,274	$6,760
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Provision for loan losses	1,195	2,925
Depreciation and amortization	2,301	2,265
Amortization of fees, discounts and premiums	1,715	1,839
Write-down and (gain)/loss on sales of other real estate owned, net	88	-74
Proceeds from sales of loans held for sale	25,599	22,537
Origination of loans held for sale	-25,599	-22,537
(Increase) decrease in mortgage servicing rights	-65	-226
Realized gain on sale of available-for-sale securities	-506	-423
Loss on disposal of premises and equipment	69	17
Net change in:	'	'
Accrued interest receivable	-719	89
Other assets	-1,389	4,278
Accrued interest payable	4	15
Other liabilities	3,695	1,822
Net cash provided by operating activities	13,662	19,287
Cash flows from investing activities:	'	'
Change in restricted cash	-250	0
Purchases of available-for-sale securities	-102,777	-175,786
Purchases of held-to-maturity securities	0	-25,709
Proceeds from sales of available-for-sale securities	121,527	64,674
Maturities, prepayments and calls of available-for-sale securities	29,732	29,573
Maturities, prepayments and calls of held-to-maturity securities	12,170	10,036
Loan originations and principal collections, net	-96,483	-5,116
Proceeds from sales of other real estate owned	620	670
Purchases of premises and equipment	-2,041	-2,119
Net cash used in investing activities	-37,502	-103,777
Cash flows from financing activities:	'	'
Net increase in deposits	211,783	113,482
Payment of Federal Home Loan Bank advances	-10,000	0
Proceeds from Federal Home Loan Bank stock redemption	58	20
Proceeds from related party borrowings	-145	160
Repayment of other borrowings	0	-215
Proceeds from issuance of common stock	88	1
Dividends paid	-3,296	-3,292
Net cash provided by financing activities	198,488	110,156
Net change in cash and cash equivalents:	174,648	25,666
Cash and cash equivalents at beginning of year	74,189	130,959
Cash and cash equivalents at end of year	248,837	156,625
Cash paid during the period for:	'	'
Interest	3,653	4,104
Income taxes	204	280
Supplemental schedule of noncash investing and financing activities:	'	'
Net change in unrealized loss on held-to-maturity securities, net of tax	-3,091	125
Net change in unrealized loss on available-for-sale securities, net of tax	-2,402	2,434
Other real estate owned transferred from loans, net	1,761	519
Other real estate owned transferred to loans, net	-268	-174
Transfer of securities from available-for-sale	49,021	0
Transfer of securities to held-to-maturity	($49,021)	$0

Nature_of_Business

Nature of Business	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Nature of Business	'
	Note 1 – Nature of Business
	Organization
	The accompanying condensed consolidated financial statements include the accounts of BankGuam Holding Company (“Company”) and its wholly-owned subsidiary, Bank of Guam (“Bank”). The Company is a Guam corporation organized on October 29, 2010, to act as a holding company of the Bank, a Guam banking corporation, a 23-branch bank serving the communities in Guam, the Commonwealth of the Northern Mariana Islands (CNMI), the Federated States of Micronesia (FSM), the Republic of the Marshall Islands (RMI), the Republic of Palau (ROP), and San Francisco, California. On August 15, 2011, the Company acquired all of the outstanding common stock of the Bank in a holding company formation transaction.
	Other than holding the shares of the Bank, the Company conducts no significant activities, although it is authorized, with the prior approval of its principal regulator, the Board of Governors of the Federal Reserve System (the “Federal Reserve Board”), to engage in a variety of activities related to the business of banking. Currently, substantially all of the Company’s operations are conducted and substantially all of the assets are owned by the Bank, which accounts for substantially all of our consolidated revenues, expenses and operating income. The Bank provides a variety of financial services to individuals, businesses and governments through its branches. The Bank’s headquarters is located in Hagåtña, Guam. The Bank currently has twelve branches in Guam, five in the CNMI, four in the FSM, one in the RMI, one in the ROP, and one in San Francisco, California. Its primary deposit products, which are insured by the Federal Deposit Insurance Corporation up to the maximum amounts allowed by law, are demand deposits, savings and time certificate accounts, and its primary lending products are consumer, commercial and real estate loans.
	For ease of reference we will sometimes refer to the Company as “we”, “us” or “our”.

Summary_of_Significant_Account

Summary of Significant Accounting Policies and Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies and Recent Accounting Pronouncements	'
	Note 2 – Summary of Significant Accounting Policies and Recent Accounting Pronouncements
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all footnotes that would be required for a full presentation of financial position, results of operations, changes in cash flows and comprehensive income in accordance with generally accepted accounting principles in the United States (“GAAP”). However, these interim financial statements reflect all adjustments (consisting of normal recurring adjustments and accruals) which, in the opinion of our management, are necessary for a fair presentation of our financial position and our results of operations for the interim periods presented.
	These unaudited condensed consolidated financial statements have been prepared on a basis consistent with prior periods, and should be read in conjunction with our audited consolidated financial statements as of and for the year ended December 31, 2012, and the notes thereto, included in our Annual Report on Form 10-K for the year ended December 31, 2012, as filed with the Securities and Exchange Commission (“SEC”) under the Securities Exchange Act of 1934 on March 21, 2013.
	Our consolidated financial position at September 30, 2013, and the consolidated results of operations for the three and nine month periods ended September 30, 2013, are not necessarily indicative of what our financial position will be as of December 31, 2013, or of the results of our operations that may be expected for the full year ending December 31, 2013.
	The Company has evaluated events subsequent to September 30, 2013, through the date at which these unaudited consolidated financial statements are being filed with the Securities and Exchange Commission, for transactions and other events which may require adjustment of and/or disclosure in such financial statements.
	Use of Estimates
	The preparation of condensed consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of income and expenses during the periods presented. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, valuation of other real estate owned, the determination of other than temporary impairment of securities and the fair value of financial instruments.
	Recent Accounting Pronouncements
	On February 5, 2013, the FASB issued ASU No. 2013-02, “Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income”, which gives additional guidance to improve the reporting of reclassifications out of accumulated other comprehensive income (“AOCI”). For significant items reclassified out of AOCI to net income in their entirety during a reporting period, companies must report the effect on the line items in the statement where net income is presented. This can be done on the face of the statement in certain circumstances or in the notes. For public companies, this guidance is effective on a prospective basis for fiscal years and interim periods within those years beginning after December 15, 2012. The adoption of this guidance did not have a material impact on our financial statements.

Earnings_Per_Common_Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Earnings Per Common Share	'
	Note 3 – Earnings Per Common Share
	Basic earnings per share represent income available to common stockholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per share reflect additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustment to income that would result from the assumed issuance. Potential common shares that may be issued by the Company relate to shares subscribed but not yet issued in 2013 under the Employee Stock Purchase Plan, and are reported as dilutive options.
	Earnings per common share have been computed based on reported net income and the following share data:
		For the Three Months Ended				For the Nine months Ended
		September 30,				September 30,
		2013		2012		2013		2012
	Net income available for common stockholders	$	2,335	$	1,971	$	7,274	$	6,760
	Weighted average number of common shares outstanding		8,793		8,779		8,788		8,779
	Effect of dilutive options		5		1		5		1
	Weighted average number of common shares outstanding used to calculate diluted earnings per common share		8,798		8,780		8,793		8,780
	Income per common share:
	Basic	$	0.27	$	0.22	$	0.83	$	0.77
	Diluted	$	0.27	$	0.22	$	0.83	$	0.77
	Under the 2011 Employee Stock Purchase Plan, eligible employees can purchase, through payroll deductions, shares of common stock at a discount. The right to purchase stocks is granted to eligible employees during a period of time that is established from time to time by the Board of Directors of the Company. Eligible employees cannot accrue the right to purchase more than $25 thousand worth of stock at the fair market value at the beginning of each offer period. Eligible employees also may not purchase more than one thousand five hundred (1,500) shares of stock in any one offer period. The shares are purchased at 85% of the fair market price of the stock on the enrollment date.
	An amended Plan was approved by the Board of Directors and went into effect on September 1, 2012.

Investment_Securities

Investment Securities	9 Months Ended
	Sep. 30, 2013
Investments Schedule [Abstract]	'
Investment Securities	'
	Note 4 – Investment Securities
	The amortized cost and fair value of investment securities, with gross unrealized gains and losses, follows:
		September 30, 2013
		Amortized			Gross Unrealized			Gross Unrealized			Fair Value
		Cost			Losses			Gains
	Securities Available for Sale
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	8,420		$	0		$	52		$	8,472
	U.S. government agency pool securities		56,270			(480	)		130			55,920
	U.S. government agency or GSE mortgage-backed securities		109,128			(1,126	)		440			108,442
		$	173,818		$	(1,606	)	$	622		$	172,834
	Securities Held to Maturity
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	32,687		$	0		$	437		$	33,124
	U.S. government agency pool securities		1,800			(9	)		37			1,828
	U.S. government agency or GSE mortgage-backed securities		56,973			(350	)		1,153			57,776
		$	91,460		$	(359	)	$	1,627		$	92,728
		31-Dec-12
		Amortized			Gross Unrealized			Gross Unrealized			Fair Value
		Cost			Losses			Gains
	Securities Available for Sale
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	59,923		$	(138	)	$	360		$	60,145
	U.S. government agency pool securities		73,663			(140	)		275			73,798
	U.S. government agency or GSE mortgage-backed securities		137,282			(152	)		2,449			139,579
		$	270,868		$	(430	)	$	3,084		$	273,522
	Securities Held to Maturity
	U.S. government agency pool securities	$	1,966		$	(3	)	$	45		$	2,008
	U.S. government agency or GSE mortgage-backed securities		56,159			0			2,054			58,213
		$	58,125		$	(3	)	$	2,099		$	60,221
	At September 30, 2013, and December 31, 2012, investment securities with a carrying value of $199.6 million and $142.3 million, respectively, were pledged to secure various government deposits and other public requirements.
	The amortized cost and fair value of investment securities by contractual maturity at September 30, 2013, and December 31, 2012, are shown below. Securities not due at a single maturity date, such as agency pool securities and mortgage-backed securities, are shown separately.
		September 30, 2013
		Available for Sale						Held to Maturity
		Amortized Cost			Fair Value			Amortized Cost			Fair Value
	Due after one but within five years	$	0		$	0		$	0		$	0
	Due after five years		8,420			8,472			32,687			33,124
	U.S. Government agency pool securities		56,270			55,920			1,800			1,828
	Mortgage-backed securities		109,128			108,442			56,973			57,776
	Total	$	173,818		$	172,834		$	91,460		$	92,728
		31-Dec-12
		Available for Sale						Held to Maturity
		Amortized Cost			Fair Value			Amortized Cost			Fair Value
	Due after one but within five years	$	4,997		$	5,035		$	0		$	0
	Due after five years		54,926			55,110			0			0
	U.S. Government agency pool securities		73,663			73,798			1,966			2,008
	Mortgage-backed securities		137,282			139,579			56,159			58,213
	Total	$	270,868		$	273,522		$	58,125		$	60,221
	Temporarily Impaired Securities
	The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2013, and December 31, 2012.
		September 30, 2013
		Less Than Twelve Months						More Than Twelve Months					Total
		Unrealized			Fair Value			Unrealized			Fair Value		Unrealized			Fair Value
		Loss						Loss					Loss
	Securities Available for Sale
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	0		$	0		$	0		$	0	$	0		$	0
	U.S. government agency pool securities		(480	)		48,128			0			0		(480	)		48,128
	U.S. government agency or GSE mortgage-backed securities		(1,126	)		70,369			0			0		(1,126	)		70,369
	Total	$	(1,606	)	$	118,497		$	0		$	0	$	(1,606	)	$	118,497
	Securities Held to Maturity
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	0		$	0		$	0		$	0	$	0		$	0
	U.S. government agency pool securities	$	(4	)	$	143		$	(5	)	$	288	$	(9	)	$	431
	U.S. government agency or GSE mortgage-backed securities		(350	)		19,544			0			0		(350	)		19,544
	Total	$	(354	)	$	19,687		$	(5	)	$	288	$	(359	)	$	19,975
		31-Dec-12
		Less Than Twelve Months						More Than Twelve Months					Total
	Unrealized			Fair Value			Unrealized			Fair Value		Unrealized			Fair Value
	Loss						Loss					Loss
Securities Available for Sale
U.S. government agency and sponsored enterprise (GSE) debt securities	$	(138	)	$	29,836		$	0		$	0	$	(138	)	$	29,836
U.S. government agency pool securities		(139	)		29,921			(1	)		76		(140	)		29,997
U.S. government agency or GSE mortgage-backed securities		(136	)		25,420			(16	)		3,216		(152	)		28,636
	$	(413	)	$	85,177		$	(17	)	$	3,292	$	(430	)	$	88,469
Securities Held to Maturity
U.S. government agency and sponsored enterprise (GSE) debt securities	$	0		$	0		$	0		$	0	$	0		$	0
U.S. government agency pool securities	$	0		$	29		$	(3	)	$	302	$	(3	)	$	331
U.S. government agency or GSE mortgage-backed securities		0			0			0			0		0			0
	$	0		$	29		$	(3	)	$	302	$	(3	)	$	331
The Bank does not believe that any of the investment securities that were in an unrealized loss position as of September 30, 2013, which comprised a total of 38 securities, were other-than-temporarily impaired. Specifically, the 38 securities are comprised of the following: 15 Small Business Administration (SBA) Pool securities, 3 mortgage-backed securities issued by the Federal Home Loan Mortgage Corporation (FHLMC), 15 mortgage-backed securities issued by the Government National Mortgage Association (GNMA), and 5 mortgage-backed securities issued by the Federal National Mortgage Association (FNMA).
Total gross unrealized losses were primarily attributable to changes in market interest rates, relative to when the investment securities were purchased, and not due to any change in the credit quality of the investment securities. The Company does not intend to sell the investment securities that were in an unrealized loss position and it is not likely that the Company will be required to sell the investment securities before recovery of their amortized cost bases, which may be at maturity.

Loans_Held_for_Sale_Loans_and_

Loans Held for Sale, Loans and Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2013
Receivables [Abstract]	'
Loans Held for Sale, Loans and Allowance for Loan Losses	'
	Note 5 – Loans Held for Sale, Loans and Allowance for Loan Losses
	Loans Held for Sale
	In its normal course of business, the Bank originates mortgage loans held for sale for the Federal Home Loan Mortgage Corporation (“FHLMC” or “Freddie Mac”). The Bank has elected to measure its residential mortgage loans held for sale at the lower of cost or market. Origination fees and costs are recognized in earnings at the time of origination for newly originated loans held for sale, and the loans are sold to Freddie Mac at par, so there is no gain or loss reported in earnings.
	During the nine months ended September 30, 2013, the Bank has originated approximately $25.6 million and sold approximately $25.6 million.
	Loans
	Outstanding loan balances are presented net of unearned income, deferred loan fees, and unamortized discount and premium. Loans subject to ASC 310-30 are presented net of the related accretable yield and nonaccretable difference.
	The loan portfolio consisted of the following at:
			September 30, 2013						December 31, 2012
			Amount			Percent			Amount			Percent
			(Dollars in thousands)
	Commercial
	Commercial & industrial		$	180,554			21	%	$	138,951			18.21	%
	Commercial mortgage			376,606			43.8	%		314,462			41.22	%
	Commercial construction			758			0.09	%		3,908			0.51	%
	Total commercial			557,918			64.89	%		457,321			59.94	%
	Consumer
	Residential mortgage			157,187			18.28	%		164,774			21.6	%
	Home equity			1,113			0.13	%		1,211			0.16	%
	Automobile			7,556			0.88	%		8,227			1.08	%
	Other consumer loans 1			136,072			15.82	%		131,412			17.22	%
	Total consumer			301,928			35.11	%		305,624			40.06	%
	Gross loans			859,846			100	%		762,945			100	%
	Deferred fee (income) costs, net			(2,239	)					(1,885	)
	Allowance for loan losses			(11,995	)					(12,228	)
	Loans, net		$	845,612					$	748,832
	1	Comprised of other revolving credit, installment loans, and overdrafts.
	At September 30, 2013, total gross loans increased by $96.9 million to $859.8 million from $762.9 million at December 31, 2012. The increase in loans is largely attributed to a $100.6 million increase in commercial loans to $557.9 million at September 30, 2013, from $457.3 million at December 31, 2012. This was due to several large loans originated in California and in Guam. The increase in commercial loans was due to a $62.1 million growth in the commercial mortgage portfolio, supplemented by the $41.6 million increase in commercial & industrial loans, and partially offset by a $3.1 million decrease in commercial construction loans. There was a $3.7 million decrease in consumer loans to $301.9 million at September 30, 2013, down from $305.6 million at December 31, 2012. The decrease in consumer loans was principally due to a $7.6 million reduction in residential mortgage loans as the result of principal paydowns, payoffs, and refinancings with the Federal Home Loan Mortgage Corporation in reaction to favorable interest rates, which was supplemented by a reduction of $671 thousand in automobile loans and partially offset by a $4.7 million increase in other consumer loans.
	Allowance for Loan Losses
	The allowance for loan losses is evaluated on a quarterly basis by Bank management, and is based upon management’s periodic review of the collectability of loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral, and prevailing economic conditions. This evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available or conditions change.
	The allowance consists of allocated and general components. The allocated component relates to loans that are classified as impaired. ASC 310-10 defines an impaired loan as one for which there is uncertainty concerning collection of all principal and interest per the contractual terms of the loan. For those loans that are classified as impaired, an allowance is established when the discounted cash flow (or the collateral value or the observable market price) of the impaired loan is lower than the carrying value of the loan. The general component covers unimpaired loans, and is estimated using a loss migration analysis based on historical charge-off experience and expected loss, given the default probability derived from the Bank’s internal risk rating process. The loss migration analysis tracks a certain number of quarters of loan loss history and industry loss factors to determine historical losses by classification category for each loan type, except certain consumer loans. These calculated loss factors are then applied to outstanding loan balances for all loans on accrual designated as “Pass,” “Special Mention,” “Substandard” or “Doubtful” (“classified loans” or “classification categories”). Additionally, a qualitative factor that is determined utilizing external economic factors and internal assessments is applied to each homogeneous loan pool. We also conduct individual loan review analyses, as part of the allowance for loan loss allocation process, applying specific monitoring policies and procedures in analyzing the existing loan portfolio.
	Credit Quality Indicators
	The Bank uses several credit quality indicators to manage credit risk, including an internal credit risk rating system that categorizes loans into pass, special mention, substandard, doubtful or loss categories. Credit risk ratings are applied individually to those classes of loans that have significant or unique credit characteristics and that benefit from a case-by-case evaluation. These are typically loans to businesses or individuals in the classes which comprise the commercial portfolio segment. Groups of loans that are underwritten and structured using standardized criteria and characteristics, such as statistical models (e.g., credit scoring or payment performance), are typically risk-rated and monitored collectively. These are typically loans to individuals in the classes which comprise the consumer portfolio segment.
	The following are the definitions of the Bank’s credit quality indicators:
	Pass (A): Exceptional: Essentially risk-free credit. These are loans of the highest quality that pose virtually no risk of loss to the Bank. This includes loans fully collateralized by means of a savings account(s) and time certificate(s) of deposit, and by at least 110% of the loan amount. Borrowers should have strong financial statements, good liquidity and excellent credit.
	Pass (B): Standard: Multiple “strong sources of repayment”. These are loans to strong borrowers with a demonstrated history of financial and managerial performance. The risk of loss is considered to be low. Loans are well-structured, with clearly identified primary and readily available secondary sources of repayment. These loans may also be secured by an equal amount of funds in a savings account or time certificate of deposit. These loans may be secured by marketable collateral whose value can be reasonably determined through outside appraisals. The borrower characteristically has a very strong cash flow and relatively low leverage.
	Pass (C): Acceptable: “Good” primary and secondary sources of repayment. These are loans to borrowers of average financial strength, stability and management expertise. The borrower should be a well-established individual or company with adequate financial resources to withstand short-term fluctuations in the marketplace. The borrower’s financial ratios and trends are favorable. The loans may be unsecured or supported by non-real estate collateral for which the value is more difficult to determine, represent a reasonable credit risk and require an average amount of account officer attention. The borrower’s ability to repay unsecured credit is to be of unquestionable strength.
	Pass (D): Monitor: “Sufficient” primary source of repayment and an acceptable secondary source of repayment. Acceptable business or individual credit, but the borrower’s operations, cash flow or financial conditions evidence average levels of risk. These loans are considered to be collectable in full, but may require a greater-than-average amount of loan officer attention. Borrowers are capable of absorbing normal setbacks without failing to meet the terms of the loan agreement.
	Special Mention: A Special Mention asset has potential weaknesses that deserve close monitoring. These potential weaknesses may result in a deterioration of the repayment prospects for the asset or in the institution’s credit position at some future date. Special Mention assets are not adversely classified and do not expose an institution to sufficient risk to warrant adverse classification. The Special Mention classification should neither be a compromise between a pass grade and substandard, nor should it be a “catch all” grade to identify any loan that has a policy exception.
	Substandard: A substandard asset is inadequately protected by the current sound worth and payment capacity of the obligor or the collateral pledged. Assets so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. Assets classified as substandard are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected.
	Formula Classified: Formula classified loans are all loans and credit cards delinquent 90 days and over which have yet to be formally classified Special Mention, Substandard or Doubtful by the Bank’s Loan Committee. In most instances, the monthly formula total is comprised primarily of real estate loans, consumer loans and credit cards. Commercial loans are typically formally classified by the Loan Committee no later than their 90-day delinquency, and thus do not become part of the formula classification. Real estate loans 90-days delinquent are in the foreclosure process, which is typically completed within another 60 days, and thus are not formally classified during this period.
	Doubtful: A loan with weaknesses well enough defined that eventual repayment in full, on the basis of currently existing facts, conditions and values, is highly questionable, even though certain factors may be present which could improve the status of the loan. The probability of some loss is extremely high, but because of certain known factors that may work to the advantage of strengthening of the assets (i.e. capital injection, perfecting liens on additional collateral, refinancing plans, etc.), its classification as an estimated loss is deferred until its more exact status can be determined.
	Loss: Loans classified as “Loss” are considered uncollectible, and are either unsecured or are supported by collateral that is of little to no value. As such, their continuance as recorded assets is not warranted. While this classification does not mandate that a loan has no ultimate recovery value, losses should be taken in the period during which these loans are deemed to be uncollectible. Loans identified as loss are immediately approved for charge-off. The Bank may refer loans to outside collection agencies, attorneys, or its internal collection division to continue collection efforts. Any subsequent recoveries are credited to the Allowance for Loan Losses.
	Set forth below is a summary of the Bank’s activity in the allowance for loan losses during the three and nine months ended September 30, 2013, and the year ended December 31, 2012:
			Three Months Ended			Nine months Ended			Year Ended
			September 30, 2013			September 30, 2013			December 31, 2012
			(Dollars in thousands)
	Balance, beginning of period		$	11,675		$	12,228		$	11,101
	Provision for loan losses			900			1,195			3,900
	Recoveries on loans previously charged off			493			1,374			3,294
	Charged off loans			(1,073	)		(2,802	)		(6,067	)
	Balance, end of period		$	11,995		$	11,995		$	12,228
	Set forth below is information regarding loan balances and the related allowance for loan losses, by portfolio type, for the three- and nine-month periods ended September 30, 2013, and the year ended December 31, 2012, respectively.
						Consumer
			Commercial			Residential			Other			Total
						Mortgages
			(Dollars in thousands)
	Nine months Ended September 30, 2013
	Allowance for loan losses:
	Balance at beginning of period		$	6,251		$	1,453		$	4,524		$	12,228
	Charge-offs			(95	)		(164	)		(2,543	)		(2,802	)
	Recoveries			61			138			1,175			1,374
	Provision			(849	)		(302	)		2,346			1,195
	Balance at end of period		$	5,368		$	1,125		$	5,502		$	11,995
Three Months Ended September 30, 2013
Allowance for loan losses:
Balance at beginning of quarter		$	5,449		$	1,066		$	5,160		$	11,675
Charge-offs			(25	)		(134	)		(914	)		(1,073	)
Recoveries			8			135			350			493
Provision			(64	)		58			906			900
Balance at end of quarter		$	5,368		$	1,125		$	5,502		$	11,995
Allowance balance at end of quarter related to:
Loans individually evaluated for impairment		$	0		$	0		$	0		$	0
Loans collectively evaluated for impairment		$	5,368		$	1,125		$	5,502		$	11,995
Loan balances at end of quarter:
Loans individually evaluated for impairment			10,323			6,293			226			16,842
Loans collectively evaluated for impairment			547,595			152,007			143,402			843,004
Ending Balance		$	557,918		$	158,300		$	143,628		$	859,846
Year Ended December 31, 2012
Allowance for loan losses:
Balance at beginning of year		$	6,654		$	318		$	4,129		$	11,101
Charge-offs			(1,320	)		(68	)		(4,679	)		(6,067	)
Recoveries			159			3			3,132			3,294
Provision			758			1,200			1,942			3,900
Balance at end of year		$	6,251		$	1,453		$	4,524		$	12,228
Allowance balance at end of year related to:
Loans individually evaluated for impairment		$	0		$	0		$	0		$	0
Loans collectively evaluated for impairment		$	6,251		$	1,453		$	4,524		$	12,228
Loan balances at end of year:
Loans individually evaluated for impairment			9,367			7,242			234			16,843
Loans collectively evaluated for impairment			447,954			158,743			139,405			746,102
Ending Balance		$	457,321		$	165,985		$	139,639		$	762,945
Impairment is measured on a loan-by-loan basis for commercial and real estate loans by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s obtainable market price, or the fair value of the collateral (if the loan is collateral-dependent). Large groups of smaller-balance homogeneous loans are collectively evaluated for impairment. The Bank performs direct write-downs of impaired loans with a charge to the allocated component of the allowance, therefore reducing the allocated component of the allowance to zero at the end of each reporting period.
Credit Quality
The following table provides a summary of the delinquency status of the Bank’s loans by portfolio type:
		30-59 Days			60-89 Days			90 Days and			Total Past			Current		Total Loans
		Past Due			Past Due			Greater			Due					Outstanding
		(Dollars in thousands)
September 30, 2013
Commercial
Commercial & industrial		$	605		$	37		$	465		$	1,107		$	179,447	$	180,554
Commercial mortgage			1,293			1,314			4,769			7,376			369,230		376,606
Commercial construction			0			0			0			0			758		758
Total commercial			1,898			1,351			5,234			8,483			549,435		557,918
Consumer
Residential mortgage			9,194			5,142			3,618			17,954			139,233		157,187
Home equity			17			0			0			17			1,096		1,113
Automobile			246			16			0			262			7,294		7,556
Other consumer 1			2,328			1,025			981			4,334			131,738		136,072
Total consumer			11,785			6,183			4,599			22,567			279,361		301,928
Total		$	13,683		$	7,534		$	9,833		$	31,050		$	828,796	$	859,846
December 31, 2012
Commercial
Commercial & industrial		$	65		$	222		$	521		$	808		$	138,143	$	138,951
Commercial mortgage			2,050			1,403			5,963			9,416			305,046		314,462
Commercial construction			0			0			0			0			3,908		3,908
Total commercial			2,115			1,625			6,484			10,224			447,097		457,321
Consumer
Residential mortgage			8,705			4,513			5,190			18,408			146,366		164,774
Home equity			0			135			0			135			1,076		1,211
Automobile			314			76			0			390			7,837		8,227
Other consumer 1			2,389			948			1,187			4,524			126,888		131,412
Total consumer			11,408			5,672			6,377			23,457			282,167		305,624
Total		$	13,523		$	7,297		$	12,861		$	33,681		$	729,264	$	762,945
1	Comprised of other revolving credit, installment loans, and overdrafts.
Generally, the accrual of interest on a loan is discontinued when principal or interest payments become more than 90 days past due, unless management believes the loan is adequately collateralized and is in the process of collection. When a loan is placed on non-accrual status, previously accrued but unpaid interest is reversed against current income. Subsequent collections of cash are applied as principal reductions when received, except when the ultimate collectability of principal is probable, in which case interest payments are credited to income. Non-accrual loans may be restored to accrual status when principal and interest become current and full repayment is expected. The following table provides information as of September 30, 2013, and December 31, 2012, with respect to loans on non-accrual status, by portfolio type:
		September 30, 2013			December 31, 2012
		(Dollars in thousands)
Non-accrual loans:
Commercial
Commercial & industrial		$	319		$	685
Commercial mortgage			6,379			7,977
Commercial construction			0			0
Total commercial			6,698			8,662
Consumer
Residential mortgage			6,229			7,166
Home equity			64			76
Automobile			0			0
Other consumer 1			226			234
Total consumer			6,519			7,476
Total non-accrual loans		$	13,217		$	16,138
1	Comprised of other revolving credit, installment loans, and overdrafts.
The Bank classifies its loan portfolios using internal credit quality ratings, as discussed above under Allowance for Loan Losses. The following table provides a summary of loans by portfolio type and the Bank’s internal credit quality ratings as of September 30, 2013, and December 31, 2012.
		September 30, 2013			December 31, 2012			Increase (Decrease)
		(Dollars in thousands)
Pass:
Commercial & industrial		$	176,602		$	123,046		$	53,556
Commercial mortgage			352,971			290,307			62,664
Commercial construction			758			3,908			(3,150	)
Residential mortgage			152,910			158,408			(5,498	)
Home equity			1,113			1,211			(98	)
Automobile			7,556			8,227			(671	)
Other consumer			135,199			130,345			4,854
Total pass loans		$	827,109		$	715,452		$	111,657
Special Mention:
Commercial & industrial		$	416		$	3,752		$	(3,336	)
Commercial mortgage			13,747			6,839			6,908
Commercial construction			0			0			0
Residential mortgage			0			0			0
Home equity			0			0			0
Automobile			0			0			0
Other consumer			0			0			0
Total special mention loans		$	14,163		$	10,591		$	3,572
Substandard:
Commercial & industrial		$	3,390		$	12,153		$	(8,763	)
Commercial mortgage			9,768			17,316			(7,548	)
Commercial construction			0			0			0
Residential mortgage			78			370			(292	)
Home equity			0			0			0
Automobile			0			0			0
Other consumer			0			26			(26	)
Total substandard loans		$	13,236		$	29,865		$	(16,629	)
Formula Classified:
Commercial & industrial		$	146		$	0		$	146
Commercial mortgage			120			0			120
Commercial construction			0			0			0
Residential mortgage			4,199			5,996			(1,797	)
Home equity			0			0			0
Automobile			0			0			0
Other consumer			873			1,041			(168	)
Total formula classified loans		$	5,338		$	7,037		$	(1,699	)
Doubtful:
Commercial & industrial		$	0		$	0		$	0
Commercial mortgage			0			0			0
Commercial construction			0			0			0
Residential mortgage			0			0			0
Home equity			0			0			0
Automobile			0			0			0
Other consumer			0			0			0
Total doubtful loans		$	0		$	0		$	0
Total outstanding loans, gross		$	859,846		$	762,945		$	96,901
As the above table indicates, the Bank’s total loans approximated $859.8 million at September 30, 2013, up from $762.9 million at December 31, 2012. The disaggregation of the portfolio by risk rating in the table reflects the following changes between December 31, 2012, and September 30, 2013:
	•		Loans rated “pass” increased by $111.7 million to $827.1 million at September 30, 2013, up from $715.5 million at December 31, 2012. The increase is primarily in commercial mortgages, which grew by $62.7 million, commercial & industrial loans, which increased by $53.6 million, and other consumer loans (consisting of other revolving credit, installment loans, and overdrafts), which increased by $4.9 million. This is due to various large loans originated in the California region and in Guam, as well as reclassifications from the substandard and special mention categories, along with an expansion in other consumer loans primarily due to a Summer consumer loan promotion. These were offset by a decrease in commercial construction loans by $3.2 million, due to the reclassification of loans that completed construction to commercial mortgage. Residential mortgages decreased by $5.5 million, automobile loans by $671 thousand and home equity loans by $98 thousand due to loan payoffs and pay downs.
	•		The “special mention” category increased by $3.6 million at September 30, 2013, compared to December 31, 2012. This is attributed to an increase in special mention commercial mortgage loans of $6.9 million, primarily as a result of the downgrade of a $7.8 million loan relationship from “pass.” This is offset by a drop in special mention commercial & industrial loans by $3.3 million, resulting primarily from the upgrade of a $3.0 million loan relationship to “pass.”
	•		Loans classified as “substandard” decreased by $16.6 million to $13.2 million at September 30, 2013, from $29.9 million at December 31, 2012. The decrease was mainly in commercial & industrial loans due to the upgrade of a $2.9 million loan relationship to “pass” and payoffs of $6.0 million. Further, commercial mortgage loans classified as substandard dropped by $7.5 million due primarily to the upgrade of a $6.8 million loan relationship to “pass.”
	•		The “formula classified” category decreased by $1.7 million during the period, resulting primarily from payoff and pay downs of residential mortgage loans.
Impaired Loans
A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect the scheduled payments of principal and interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed.
Impaired loans include loans that are in non-accrual status and other loans that have been modified in Troubled Debt Restructurings (TDRs, where economic concessions have been granted to borrowers experiencing financial difficulties). These concessions typically result from the Bank’s loss mitigation actions, and could include reductions in the interest rate, payment extensions, forbearance, or other actions taken with the intention to maximize collections.
The following table sets forth information regarding non-accrual loans and restructured loans, at September 30, 2013, and December 31, 2012:
		September 30, 2013			December 31, 2012
		(Dollars in thousands)
Impaired loans:
Restructured loans:
Non-accruing restructured loans		$	5,676		$	5,970
Accruing restructured loans			3,625			705
Total restructured loans			9,301			6,675
Other non-accruing impaired loans			7,541			10,168
Other accruing impaired loans			0			0
Total impaired loans		$	16,842		$	16,843
Impaired loans less than 90 days delinquent and included in total impaired loans		$	7,889		$	6,058
The table below contains additional information with respect to impaired loans, by portfolio type, for the nine months ended September 30, 2013, and the year ended December 31, 2012:
		Recorded			Unpaid			Average			Interest
		Investment			Principal			Recorded			Income
					Balance			Investment			Recognized
		(Dollars in thousands)
September 30, 2013, With no related allowance recorded:
Commercial & industrial		$	3,469		$	3,622		$	3,141		$	16
Commercial mortgage			6,854			8,569			7,611			2
Commercial construction			0			0			0			0
Residential mortgage			6,229			6,327			6,801			0
Home equity			64			64			70			0
Automobile			0			0			0			0
Other consumer			226			235			225			0
Total impaired loans with no related allowance		$	16,842		$	18,817		$	17,848		$	18
September 30, 2013, With an allowance recorded:
Commercial & industrial		$	0		$	0		$	0		$	0
Commercial mortgage			0			0			0			0
Commercial construction			0			0			0			0
Residential mortgage			0			0			0			0
Home equity			0			0			0			0
Automobile			0			0			0			0
Other consumer			0			0			0			0
Total impaired loans with an allowance recorded		$	0		$	0		$	0		$	0
December 31, 2012, With no related allowance recorded:
Commercial & industrial		$	822		$	975		$	778		$	29
Commercial mortgage			8,545			10,229			10,204			450
Commercial construction			0			0			925			0
Residential mortgage			7,166			7,264			3,313			249
Home equity			76			76			33			2
Automobile			0			0			0			0
Other consumer			234			243			191			8
Total impaired loans with no related allowance		$	16,843		$	18,787		$	15,444		$	738
December 31, 2012, With an allowance recorded:
Commercial & industrial		$	0		$	0		$	0		$	0
Commercial mortgage			0			0			0			0
Commercial construction			0			0			0			0
Residential mortgage			0			0			0			0
Home equity			0			0			0			0
Automobile			0			0			0			0
Other consumer			0			0			0			0
Total impaired loans with an allowance recorded		$	0		$	0		$	0		$	0
Impairment is measured on a loan-by-loan basis for commercial and real estate loans by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s obtainable market price, or the fair value of the collateral (if the loan is collateral-dependent). Large groups of smaller-balance, homogeneous loans are collectively evaluated for impairment. The Bank performs direct write-downs of impaired loans with a charge to the allocated component of the allowance for loan losses, thereby reducing the allocated component of the allowance to zero at the end of each reporting period.
Troubled Debt Restructurings
In accordance with FASB’s Accounting Standard Update No. 2011-02, “A Creditor’s Determination of Whether a Restructuring is a Troubled Debt Restructuring” (ASU No. 2011-02), the Bank had $9.3 million of troubled debt restructurings (TDRs) as of September 30, 2013. The restructured loans recorded with the Bank have been modified for the purpose of alleviating temporary impairments to the borrower’s financial condition. The modifications that the Bank has extended to borrowers have come in the form of a change in the amortization terms, reduction in the interest rate, and interest-only payments. The workout plan between the borrower and the Bank is designed to provide a bridge for cash flow shortfalls in the near term. As the borrower works through the near term issues, in most cases, the original contractual terms will be reinstated.
Additional information regarding performing and non-performing TDRs at September 30, 2013, and December 31, 2012, is set forth in the following table:
		Number of			Pre-Modification			Post-			September 30,			December 31,
		Loans			Outstanding			Modification			2013			2012
					Recorded			Outstanding
					Investment			Recorded
								Investment
		(Dollars in thousands)
Performing
Residential mortgage			0		$	0		$	0		$	0		$	0
Commercial mortgage			6			3,982			3,982			3,625			706
Automobile			0			0			0			0			0
Consumer			0			0			0			0			0
			6			3,982			3,982			3,625			706
Nonperforming
Residential mortgage			0		$	0		$	0		$	0		$	0
Commercial mortgage			7			10,120			8,805			5,676			5,970
Automobile			0			0			0			0			0
Consumer			0			0			0			0			0
			7			10,120			8,805			5,676			5,970
Total Troubled Debt Restructurings (TDRs)			13		$	14,102		$	12,787		$	9,301		$	6,676

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Note 6 – Commitments and Contingencies
	The Bank utilizes facilities, equipment and land under various operating leases with terms ranging from 1 to 99 years. Some of these leases include scheduled rent increases. The total amount of the rent is being charged to expense on the straight-line method over the lease terms in accordance with ASC Topic 840 “Leases”. The Bank has recorded a deferred obligation of $745 thousand and $698 thousand as of September 30, 2013, and December 31, 2012, respectively, which is included within other liabilities, to reflect the excess of rent expense over cash paid on the leases.
	At September 30, 2013, future lease commitments under the above noncancelable operating leases were as follows:
	Periods ending December 31,
	2013	$	1,985
	2014		1,379
	2015		1,072
	2016		886
	Thereafter		19,709
	Total	$	25,289
	The Bank leases certain facilities from two separate entities in which two of its directors have separate ownership interests. Lease payments made to these entities during the periods ended September 30, 2013, and December 31, 2012, approximated $278 thousand and $358 thousand, respectively.
	Additionally, the Bank leases office space to third parties, with original lease terms ranging from 3 to 5 years and option periods ranging up to 15 years. At September 30, 2013, minimum future rents to be received under non-cancelable operating sublease agreements were $267, $54, $40, and $27 thousand for the periods ending December 2013, 2014, 2015 and 2016, respectively.
	A summary of rental activities for the 9-month periods ended September 30, 2013, and September 30, 2012, is as follows:
		September 30,		September 30,
		2013		2012
	Rent expense	$	1,748	$	1,708
	Less: sublease rentals		200		190
	Net rent expense	$	1,548	$	1,518
	The Bank is involved in certain legal actions and claims that arise in the ordinary course of business. Management believes that, as a result of its legal defenses and insurance arrangements, none of these matters is expected to have a material adverse effect on the Bank’s or the Company’s financial position, results of operations or cash flows.

Minimum_Regulatory_Capital_Req

Minimum Regulatory Capital Requirements	9 Months Ended
	Sep. 30, 2013
Banking And Thrift [Abstract]	'
Minimum Regulatory Capital Requirements	'
	Note 7 – Minimum Regulatory Capital Requirements
	The Bank is subject to various regulatory capital requirements administered by the United States federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Bank’s and the Company’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off-balance-sheet items, as calculated under regulatory accounting practices.
	Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum amounts and ratios (set forth in the following table) of total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined) and of Tier 1 capital (as defined) to average assets (as defined). Management believes that, as of September 30, 2013, and December 31, 2012, the Bank met all capital adequacy requirements to which it is subject.
	As of September 30, 2013, the most recent notification from the Federal Deposit Insurance Corporation categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the following table.
	There are no conditions or events since the notification that management believes have changed the Bank’s category. The Bank’s actual capital amounts and ratios as of September 30, 2013, and December 31, 2012, are also presented in the table.
		Actual					For Capital Adequacy					To Be Well Capitalized
							Purposes					Under Prompt Corrective
												Action Provisions
		Amount		Ratio			Amount		Ratio			Amount		Ratio
	At September 30, 2013:
	Total capital (to Risk Weighted Assets)	$	106,514		12.53	%	$	67,995		8	%	$	84,994		10	%
	Tier 1 capital (to Risk Weighted Assets)	$	96,011		11.44	%	$	33,577		4	%	$	50,366		6	%
	Tier 1 capital (to Average Assets)	$	96,011		7.31	%	$	52,569		4	%	$	65,711		5	%
	At December 31, 2012:
	Total capital (to Risk Weighted Assets)	$	101,489		13.51	%	$	60,094		8	%	$	75,118		10	%
	Tier 1 capital (to Risk Weighted Assets)	$	92,206		12.43	%	$	29,676		4	%	$	44,514		6	%
	Tier 1 capital (to Average Assets)	$	92,206		7.4	%	$	49,854		4	%	$	62,317		5	%

OffBalanceSheet_Activities

Off-Balance-Sheet Activities	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Off-Balance-Sheet Activities	'
	Note 8 – Off-Balance-Sheet Activities
	The Bank is a party to credit-related financial instruments with off-balance-sheet risk to meet the financing needs of its customers in the normal course of business. These financial instruments include commitments to extend credit, standby letters of credit, and commercial letters of credit. Such commitments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount reflected in the consolidated financial statements.
	The Bank’s exposure to credit loss, in the event of nonperformance by the other parties to financial instruments for loan commitments and letters of credit, is represented by the contractual amount of these instruments. The Bank follows the same credit policies in making commitments and conditional obligations as it does for on-balance-sheet instruments.
	A summary of financial instruments with off-balance-sheet risk at September 30, 2013, and December 31, 2012, is as follows:
		September 30,		December 31,
		2013		2012
	Commitments to extend credit	$	108,988	$	100,007
	Letters of credit:
	Standby letters of credit	$	47,554	$	26,178
	Other letters of credit		2,342		3,030
	Total	$	49,896	$	29,208
	Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The commitments for some lines of credit may expire without being drawn upon. Therefore, the total commitment amounts do not necessarily represent future cash requirements. The Bank evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if it is deemed necessary by the Bank upon extension of credit, is based on management’s credit evaluation of the customer.
	Commercial and standby letters of credit are conditional commitments issued by the Bank to guarantee the performance of a customer to a third party or the shipment of merchandise from a third party. These letters of credit are primarily issued to support public and private borrowing arrangements. The majority of all letters of credit issued have expiration dates within one year. The credit risk involved in issuing letters-of-credit is essentially the same as that involved in extending loan facilities to customers, and similar credit underwriting standards are applied. The Bank generally holds collateral supporting those commitments.
	The Bank considers its standby letters of credit to be payment guarantees. At September 30, 2013, the maximum undiscounted future payments that the Bank could be required to make for all outstanding letters of credit were $49.9 million. All of these arrangements mature within one year. The Bank has recourse to recover from the customer any amounts paid under these guarantees. Most of the guarantees are fully collateralized; however, several are unsecured. The Bank had not recorded any liabilities associated with these guarantees at September 30, 2013.
	Mortgage loans serviced for others are not included in the accompanying consolidated statements of condition. The unpaid principal balances of mortgage loans serviced for others were $204.6 million and $197.4 million at September 30, 2013, and December 31, 2012, respectively. On September 30, 2013, and December 31, 2012, the Bank recorded mortgage servicing rights at their estimated fair value of $1.35 million and $1.29 million, respectively.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Note 9 – Income Taxes
	We record an amount equal to the tax credits, tax loss carry-forwards and tax deductions (“tax benefits”) that we believe will be available to us to offset or reduce the amounts of our income taxes in future periods as a deferred tax asset on our balance sheet. Under applicable federal and state income tax laws and regulations in the United States, such tax benefits will expire if not used within specified periods of time. Accordingly, the ability to fully use our deferred tax asset depends on the amount of taxable income that we generate during those time periods. At least once each year, or more frequently if warranted, we make estimates of future taxable income that we believe we are likely to generate during those future periods. If we conclude, on the basis of those estimates and the amount of the tax benefits available to us, that it is more likely than not that we will be able to fully utilize those tax benefits prior to their expiration, we recognize the deferred tax asset in full on our balance sheet. On the other hand, if we conclude on the basis of those estimates and the amount of the tax benefits available to us that it has become more likely than not that we will be unable to utilize those tax benefits in full prior to their expiration, then we would establish a (or increase any existing) valuation allowance to reduce the deferred tax asset on our balance sheet to the amount which we believe we are more likely than not to be able to utilize. Such a reduction is implemented by recognizing a non-cash charge that would have the effect of increasing the provision, or reducing any credit, for income taxes that we would otherwise have recorded in our statements of operations. The determination of whether and the extent to which we will be able to utilize our deferred tax asset involves significant management judgments and assumptions that are subject to period-to-period changes as a result of changes in tax laws, changes in the market, or economic conditions that could affect our operating results or variances between our actual operating results and our projected operating results, as well as other factors.
	A valuation allowance of $2.4 million has been provided at September 30, 2013, to reduce the deferred tax asset because, in management’s opinion, it is more likely than not that these tax benefits will not be realized. The portion of the deferred tax asset with valuation allowance is attributable to a net operating loss carry forward from the Bank’s California operations. The benefit of the net operating loss has already been realized as a result of the Guam income tax code.
	The difference between the effective income tax expense and the income tax expense computed at the Guam statutory rate was due to nontaxable interest income earned on loans to the Government of Guam for each of the years ended December 31, 2012 and 2011.
	The Bank files income tax returns in Guam, the CNMI and the State of California. The Bank is no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years prior to 2007.

Fair_Value_of_Assets_and_Liabi

Fair Value of Assets and Liabilities	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Fair Value of Assets and Liabilities	'
	Note 10 – Fair Value of Assets and Liabilities
	The Bank uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. In accordance with ASC Topic 820 “Fair Value Measurements and Disclosures”, the fair value of a financial instrument is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value is best determined based upon quoted market prices. However, in many instances there are no quoted market prices for the Bank’s various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument. The fair value guidance of ASC Topic 820 provides a consistent definition of fair value, which focuses on exit price in an orderly transaction (that is, not a forced liquidation or distressed sale) between market participants at the measurement date under then-current market conditions. If there has been a significant decrease in the volume and level of activity for the asset or liability, a change in valuation technique or the use of multiple valuation techniques may be appropriate. In such instances, determining the price at which willing market participants would transact at the measurement date under then-current market conditions depends on the facts and circumstances, and requires the use of significant judgment. The fair value is a reasonable point within the range that is most representative of fair value under then-current market conditions.
	Fair Value Hierarchy
	In accordance with the guidance of ASC Topic 820, the Bank groups its financial assets and financial liabilities generally measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value.
	Level 1:	Valuation is based on quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 1 assets and liabilities generally include debt and equity securities that are traded in an active exchange market, as well as certain U.S. Treasury securities that are highly liquid and are actively traded in over-the-counter markets. Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities.
	Level 2:	Valuation is based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. The valuation may be based on quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
	Level 3:	Valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which determination of fair value requires significant management judgment or estimation.
	A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
	Financial assets measured at fair value on a recurring basis as of September 30, 2013, and December 31, 2012, are as follows:
		Quoted Prices		Significant		Significant		Total
		in Active		Other		Unobservable
		Markets for		Observable		Inputs
		Identical Assets		Inputs		(Level 3)
		(Level 1)		(Level 2)
	At September 30, 2013
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	0	$	8,472	$	0	$	8,472
	U.S. government agency pool securities		0		55,920		0		55,920
	U.S. government agency or GSE		0		108,442		0		108,442
	Other assets:
	Mortgage Servicing Rights		0		0		1,350		1,350
	Total assets	$	0	$	172,834	$	1,350	$	174,184
	At December 31, 2012
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	0	$	60,145	$	0	$	60,145
	U.S. government agency pool securities		0		73,798		0		73,798
	U.S. government agency or GSE		0		139,579		0		139,579
	Other assets:
	Mortgage Servicing Rights		0		0		1,285		1,285
	Total assets	$	0	$	273,522	$	1,285	$	274,807
	There were no liabilities measured at fair value on a recurring basis as of September 30, 2013, and December 31, 2012.
	During the periods ended September 30, 2013, and December 31, 2012, the changes in Level 3 assets measured at fair value on a recurring basis are as follows:
		September 30, 2013		December 31, 2012
	Beginning balance	$	1,285	$	1,028
	Realized and unrealized net gains:
	Included in net income		65		257
	Included in other comprehensive income		0		0
	Purchases, sales and issuances
	Purchases		0		0
	Sales		0		0
	Issuances		0		0
	Ending balance	$	1,350	$	1,285
	The valuation technique used for Level 3 assets in this category is their discounted cash flow. Inputs considered in determining Level 3 pricing include the anticipated prepayment rates, default rates, and the loss severity given a future default. Significant increases or decreases in any of those inputs in isolation would result in a significantly lower or higher fair value measurement. In general, a change in the assumption of the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity in an event of default.
	The MSRs are priced with a discount rate composed of two components: a risk-free rate plus a risk premium. Future income is assumed to be received on active loans in line with the outstanding balance each month, multiplied by the difference between the parent and investor interest rates (the “spread”). For most of the mortgage loans serviced, the spread is 0.375%. We have discounted income net of expenses and tax from the projection month in which cash flows are expected to occur at a gross interest rate of 7.4% per annum. This rate has been built up using the Capital Asset Pricing Model (“CAPM”) approach. We have used a risk-free rate based on U.S. Federal Government bond yields at the valuation date (with a term appropriate to the future income from the loan portfolio), an assumed risk premium of 6.0% per annum and a beta of 1.0.
	There were no transfers into or out of the Bank’s Level 3 financial assets for the periods ended September 30, 2013, and December 31, 2012.
	Fair Value on a Nonrecurring Basis
	Under certain circumstances, the Bank makes adjustments to fair value for assets and liabilities even though they are not measured at fair value on an ongoing basis. The following table presents the financial instruments carried on the consolidated statements of condition by caption and by level in the fair value hierarchy at September 30, 2013, and December 31, 2012, for which a nonrecurring change in fair value has been recorded:
		Quoted Prices in		Significant Other		Significant		Total
		Active Markets for		Observable Inputs		Unobservable Inputs
		Identical Assets		(Level 2)		(Level 3)
		(Level 1)
	September 30, 2013
	Financial assets:
	Loans, net
	Impaired loans	$	0	$	0	$	0	$	0
	Other assets
	Other real estate owned	$	0	$	4,538	$	0	$	4,538
	December 31, 2012
	Financial assets:
	Loans, net
	Impaired loans	$	0	$	250	$	0	$	250
	Other assets
	Other real estate owned	$	0	$	4,384	$	0	$	4,384
	In accordance with the provisions of loan impairment guidance of ASC Subtopic 310-10-35, no loans were written down during the quarter ended September 30, 2013. The fair value of loans subject to write downs are estimated using the appraised value of the underlying collateral, discounted as necessary due to management’s estimates of changes in economic conditions, less the estimated costs of selling the assets.
	In accordance with the provisions of the Impairment or Disposal of Long-Lived Assets Subsections of ASC Subtopic 360–10, the Bank did not have any impairment or disposal of Long-Lived Assets during the quarter ended September 30, 2013. There were three properties foreclosed totaling $549 thousand that were booked into Other Real Estate Owned (OREO) during the quarter ended September 30, 2013. Four other OREO properties were sold during the quarter ended September 30, 2013, totaling $242 thousand. OREO losses during the quarter resulting from appraisals/sales deficiencies totaled $43 thousand. After allowing for the Reserve for OREO Losses of $37 thousand at the end of the quarter, the Other Real Estate Owned ending balance at September 30 was $4.5 million. Foreclosed assets subject to write downs is estimated using the appraised value of the underlying collateral, discounted as necessary due to management’s estimates of changes in economic conditions, less the estimated costs to sell the assets.
The Bank also makes adjustments to nonfinancial assets and liabilities even though they are not measured at fair value on an ongoing basis. The Bank did not have nonfinancial assets or liabilities for which a nonrecurring change in fair value has been recorded during the periods ended September 30, 2013, and December 31, 2012.
The following methods and assumptions were used by the Bank in estimating fair value disclosures for financial instruments:
Cash and Cash Equivalents
The carrying amount of cash and short-term instruments approximates fair value based on the short-term nature of the assets.
Interest-Bearing Deposits in Banks
Fair values for other interest-bearing deposits are estimated using discounted cash flow analyses based on current interest rates or yields for similar types of deposits.
Investment Securities
When quoted prices are available in an active market, the Bank classifies the securities within Level 1 of the valuation hierarchy. Level 1 securities include highly liquid U.S. Government debt and equity securities.
If quoted market prices are not available, the Bank estimates fair values using pricing models and discounted cash flows that consider standard input factors such as observable market data, benchmark yields, interest rate volatilities, broker/dealer quotes, and credit spreads. Examples of such instruments, which would generally be classified within Level 2 of the valuation hierarchy, include U.S. GSE obligations, corporate bonds, and other securities. Mortgage-backed securities are included in Level 2 if observable inputs are available. In certain cases where there is limited activity or less transparency around inputs to the valuation, the Bank would classify those securities in Level 3. At September 30, 2013, and December 31, 2012, the Bank did not have any Level 3 securities.
Loans
For variable-rate loans that re-price frequently and with no significant change in credit risk, fair values are based on carrying values. 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. Fair values for nonperforming loans are estimated using discounted cash flow analyses or underlying collateral values, where applicable.
Mortgage Servicing Rights
The fair value of MSRs is determined using models which depend on estimates of prepayment rates and resultant weighted average lives of the MSRs and option-adjusted interest rate spread levels.
Deposit Liabilities
The fair values disclosed for demand deposits (for example, interest and non-interest checking, passbook savings and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (that is, their carrying amounts). Fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies current market interest rates on comparable instruments to a schedule of aggregated expected monthly maturities on time deposits.
Short-Term Borrowings
The carrying amounts of federal funds purchased and Federal Home Loan Bank (FHLB) advances maturing within ninety days approximate their fair values. The Bank had no short-term borrowings as of September 30, 2013.
Long-Term Borrowings
The fair value of FHLB advances maturing after ninety days is determined based on expected present value techniques using current market interest rates for advances with similar terms and remaining maturities.
Off-Balance Sheet Commitments and Contingent Liabilities
Management does not believe it is practicable to provide an estimate of fair value for off-balance sheet commitments or contingent liabilities because of the uncertainty involved in attempting to assess the likelihood and timing of a commitment being drawn upon, coupled with a lack of an established market for these instruments and the wide diversity of fee structures.
Fair Value of Other Financial Instruments
The estimated fair values of the Bank’s other financial instruments, excluding those assets recorded at fair value on a recurring basis on the Bank’s consolidated statements of condition, are as follows:
			Estimated fair value
($ in thousands)	Carrying		Level 1		Level 2		Level 3		Total
	amount
September 30, 2013
Financial assets:
Cash and cash equivalents	$	248,837	$	248,837	$	0	$	0	$	248,837
Interest bearing deposits with banks		400		400		0		0		400
Investment securities held to maturity		91,460		0		92,728		0		92,728
Loans		845,612		0		0		836,439		836,439
Total	$	1,186,309	$	249,237	$	92,728	$	836,439	$	1,178,404
Financial liabilities:
Deposits	$	1,314,323	$	0	$	1,314,204	$	0	$	1,314,204
Total	$	1,314,323	$	0	$	1,314,204	$	0	$	1,314,204
December 31, 2012
Financial assets:
Cash and cash equivalents	$	74,189	$	74,189	$	0	$	0	$	74,189
Interest bearing deposits with banks		150		150		0		0		150
Investment securities held to maturity		58,125		0		60,221		0		60,221
Loans		748,832		0		0		746,848		746,848
Total	$	881,296	$	74,339	$	60,221	$	746,848	$	881,408
Financial liabilities:
Deposits	$	1,102,540	$	0	$	1,107,142	$	0	$	1,107,142
Federal Home Loan Bank advances		10,000		0		10,000		0		10,000
Total	$	1,112,540	$	0	$	1,117,142	$	0	$	1,117,142

Summary_of_Significant_Account1

Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Use of Estimates	'
	Use of Estimates
	The preparation of condensed consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of income and expenses during the periods presented. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, valuation of other real estate owned, the determination of other than temporary impairment of securities and the fair value of financial instruments.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	On February 5, 2013, the FASB issued ASU No. 2013-02, “Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income”, which gives additional guidance to improve the reporting of reclassifications out of accumulated other comprehensive income (“AOCI”). For significant items reclassified out of AOCI to net income in their entirety during a reporting period, companies must report the effect on the line items in the statement where net income is presented. This can be done on the face of the statement in certain circumstances or in the notes. For public companies, this guidance is effective on a prospective basis for fiscal years and interim periods within those years beginning after December 15, 2012. The adoption of this guidance did not have a material impact on our financial statements.

Earnings_Per_Common_Share_Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Summary of Earnings Per Common Share	'
	Earnings per common share have been computed based on reported net income and the following share data:
		For the Three Months Ended				For the Nine months Ended
		September 30,				September 30,
		2013		2012		2013		2012
	Net income available for common stockholders	$	2,335	$	1,971	$	7,274	$	6,760
	Weighted average number of common shares outstanding		8,793		8,779		8,788		8,779
	Effect of dilutive options		5		1		5		1
	Weighted average number of common shares outstanding used to calculate diluted earnings per common share		8,798		8,780		8,793		8,780
	Income per common share:
	Basic	$	0.27	$	0.22	$	0.83	$	0.77
	Diluted	$	0.27	$	0.22	$	0.83	$	0.77

Investment_Securities_Tables

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2013
Investments Schedule [Abstract]	'
Summary of Amortized Cost and Fair Value of Investment Securities, with Gross Unrealized Gains and Losses	'
	The amortized cost and fair value of investment securities, with gross unrealized gains and losses, follows:
		September 30, 2013
		Amortized			Gross Unrealized			Gross Unrealized			Fair Value
		Cost			Losses			Gains
	Securities Available for Sale
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	8,420		$	0		$	52		$	8,472
	U.S. government agency pool securities		56,270			(480	)		130			55,920
	U.S. government agency or GSE mortgage-backed securities		109,128			(1,126	)		440			108,442
		$	173,818		$	(1,606	)	$	622		$	172,834
	Securities Held to Maturity
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	32,687		$	0		$	437		$	33,124
	U.S. government agency pool securities		1,800			(9	)		37			1,828
	U.S. government agency or GSE mortgage-backed securities		56,973			(350	)		1,153			57,776
		$	91,460		$	(359	)	$	1,627		$	92,728
		31-Dec-12
		Amortized			Gross Unrealized			Gross Unrealized			Fair Value
		Cost			Losses			Gains
	Securities Available for Sale
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	59,923		$	(138	)	$	360		$	60,145
	U.S. government agency pool securities		73,663			(140	)		275			73,798
	U.S. government agency or GSE mortgage-backed securities		137,282			(152	)		2,449			139,579
		$	270,868		$	(430	)	$	3,084		$	273,522
	Securities Held to Maturity
	U.S. government agency pool securities	$	1,966		$	(3	)	$	45		$	2,008
	U.S. government agency or GSE mortgage-backed securities		56,159			0			2,054			58,213
		$	58,125		$	(3	)	$	2,099		$	60,221
Summary of Amortized Cost and Fair Value of Investment Securities by Contractual Maturity	'
	The amortized cost and fair value of investment securities by contractual maturity at September 30, 2013, and December 31, 2012, are shown below. Securities not due at a single maturity date, such as agency pool securities and mortgage-backed securities, are shown separately.
		September 30, 2013
		Available for Sale						Held to Maturity
		Amortized Cost			Fair Value			Amortized Cost			Fair Value
	Due after one but within five years	$	0		$	0		$	0		$	0
	Due after five years		8,420			8,472			32,687			33,124
	U.S. Government agency pool securities		56,270			55,920			1,800			1,828
	Mortgage-backed securities		109,128			108,442			56,973			57,776
	Total	$	173,818		$	172,834		$	91,460		$	92,728
		31-Dec-12
		Available for Sale						Held to Maturity
		Amortized Cost			Fair Value			Amortized Cost			Fair Value
	Due after one but within five years	$	4,997		$	5,035		$	0		$	0
	Due after five years		54,926			55,110			0			0
	U.S. Government agency pool securities		73,663			73,798			1,966			2,008
	Mortgage-backed securities		137,282			139,579			56,159			58,213
	Total	$	270,868		$	273,522		$	58,125		$	60,221
Summary of Gross Unrealized Losses and Fair Value of Investments with Unrealized Losses of Temporarily Impaired Securities	'
	The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2013, and December 31, 2012.
		September 30, 2013
		Less Than Twelve Months						More Than Twelve Months					Total
		Unrealized			Fair Value			Unrealized			Fair Value		Unrealized			Fair Value
		Loss						Loss					Loss
	Securities Available for Sale
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	0		$	0		$	0		$	0	$	0		$	0
	U.S. government agency pool securities		(480	)		48,128			0			0		(480	)		48,128
	U.S. government agency or GSE mortgage-backed securities		(1,126	)		70,369			0			0		(1,126	)		70,369
	Total	$	(1,606	)	$	118,497		$	0		$	0	$	(1,606	)	$	118,497
	Securities Held to Maturity
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	0		$	0		$	0		$	0	$	0		$	0
	U.S. government agency pool securities	$	(4	)	$	143		$	(5	)	$	288	$	(9	)	$	431
	U.S. government agency or GSE mortgage-backed securities		(350	)		19,544			0			0		(350	)		19,544
	Total	$	(354	)	$	19,687		$	(5	)	$	288	$	(359	)	$	19,975
		31-Dec-12
		Less Than Twelve Months						More Than Twelve Months					Total
		Unrealized			Fair Value			Unrealized			Fair Value		Unrealized			Fair Value
		Loss						Loss					Loss
	Securities Available for Sale
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	(138	)	$	29,836		$	0		$	0	$	(138	)	$	29,836
	U.S. government agency pool securities		(139	)		29,921			(1	)		76		(140	)		29,997
	U.S. government agency or GSE mortgage-backed securities		(136	)		25,420			(16	)		3,216		(152	)		28,636
		$	(413	)	$	85,177		$	(17	)	$	3,292	$	(430	)	$	88,469
	Securities Held to Maturity
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	0		$	0		$	0		$	0	$	0		$	0
	U.S. government agency pool securities	$	0		$	29		$	(3	)	$	302	$	(3	)	$	331
	U.S. government agency or GSE mortgage-backed securities		0			0			0			0		0			0
		$	0		$	29		$	(3	)	$	302	$	(3	)	$	331

Loans_Held_for_Sale_Loans_and_1

Loans Held for Sale, Loans and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2013
Receivables [Abstract]	'
Loan Portfolio	'
	The loan portfolio consisted of the following at:
			September 30, 2013						December 31, 2012
			Amount			Percent			Amount			Percent
			(Dollars in thousands)
	Commercial
	Commercial & industrial		$	180,554			21	%	$	138,951			18.21	%
	Commercial mortgage			376,606			43.8	%		314,462			41.22	%
	Commercial construction			758			0.09	%		3,908			0.51	%
	Total commercial			557,918			64.89	%		457,321			59.94	%
	Consumer
	Residential mortgage			157,187			18.28	%		164,774			21.6	%
	Home equity			1,113			0.13	%		1,211			0.16	%
	Automobile			7,556			0.88	%		8,227			1.08	%
	Other consumer loans 1			136,072			15.82	%		131,412			17.22	%
	Total consumer			301,928			35.11	%		305,624			40.06	%
	Gross loans			859,846			100	%		762,945			100	%
	Deferred fee (income) costs, net			(2,239	)					(1,885	)
	Allowance for loan losses			(11,995	)					(12,228	)
	Loans, net		$	845,612					$	748,832
	1	Comprised of other revolving credit, installment loans, and overdrafts.
Activity of Allowance for Loan Losses	'
	Set forth below is a summary of the Bank’s activity in the allowance for loan losses during the three and nine months ended September 30, 2013, and the year ended December 31, 2012:
			Three Months Ended			Nine months Ended			Year Ended
			September 30, 2013			September 30, 2013			December 31, 2012
			(Dollars in thousands)
	Balance, beginning of period		$	11,675		$	12,228		$	11,101
	Provision for loan losses			900			1,195			3,900
	Recoveries on loans previously charged off			493			1,374			3,294
	Charged off loans			(1,073	)		(2,802	)		(6,067	)
	Balance, end of period		$	11,995		$	11,995		$	12,228
Loan Balances and Related Allowance for Loan Losses, by Portfolio Type	'
	Set forth below is information regarding loan balances and the related allowance for loan losses, by portfolio type, for the three- and nine-month periods ended September 30, 2013, and the year ended December 31, 2012, respectively.
						Consumer
			Commercial			Residential			Other			Total
						Mortgages
			(Dollars in thousands)
	Nine months Ended September 30, 2013
	Allowance for loan losses:
	Balance at beginning of period		$	6,251		$	1,453		$	4,524		$	12,228
	Charge-offs			(95	)		(164	)		(2,543	)		(2,802	)
	Recoveries			61			138			1,175			1,374
	Provision			(849	)		(302	)		2,346			1,195
	Balance at end of period		$	5,368		$	1,125		$	5,502		$	11,995
	Three Months Ended September 30, 2013
	Allowance for loan losses:
	Balance at beginning of quarter		$	5,449		$	1,066		$	5,160		$	11,675
	Charge-offs			(25	)		(134	)		(914	)		(1,073	)
	Recoveries			8			135			350			493
	Provision			(64	)		58			906			900
	Balance at end of quarter		$	5,368		$	1,125		$	5,502		$	11,995
	Allowance balance at end of quarter related to:
	Loans individually evaluated for impairment		$	0		$	0		$	0		$	0
	Loans collectively evaluated for impairment		$	5,368		$	1,125		$	5,502		$	11,995
	Loan balances at end of quarter:
	Loans individually evaluated for impairment			10,323			6,293			226			16,842
	Loans collectively evaluated for impairment			547,595			152,007			143,402			843,004
	Ending Balance		$	557,918		$	158,300		$	143,628		$	859,846
	Year Ended December 31, 2012
	Allowance for loan losses:
	Balance at beginning of year		$	6,654		$	318		$	4,129		$	11,101
	Charge-offs			(1,320	)		(68	)		(4,679	)		(6,067	)
	Recoveries			159			3			3,132			3,294
	Provision			758			1,200			1,942			3,900
	Balance at end of year		$	6,251		$	1,453		$	4,524		$	12,228
	Allowance balance at end of year related to:
	Loans individually evaluated for impairment		$	0		$	0		$	0		$	0
	Loans collectively evaluated for impairment		$	6,251		$	1,453		$	4,524		$	12,228
	Loan balances at end of year:
	Loans individually evaluated for impairment			9,367			7,242			234			16,843
	Loans collectively evaluated for impairment			447,954			158,743			139,405			746,102
	Ending Balance		$	457,321		$	165,985		$	139,639		$	762,945
Summary of Delinquency Status of Loans	'
	The following table provides a summary of the delinquency status of the Bank’s loans by portfolio type:
			30-59 Days			60-89 Days			90 Days and			Total Past			Current		Total Loans
			Past Due			Past Due			Greater			Due					Outstanding
			(Dollars in thousands)
	September 30, 2013
	Commercial
	Commercial & industrial		$	605		$	37		$	465		$	1,107		$	179,447	$	180,554
	Commercial mortgage			1,293			1,314			4,769			7,376			369,230		376,606
	Commercial construction			0			0			0			0			758		758
	Total commercial			1,898			1,351			5,234			8,483			549,435		557,918
	Consumer
	Residential mortgage			9,194			5,142			3,618			17,954			139,233		157,187
	Home equity			17			0			0			17			1,096		1,113
	Automobile			246			16			0			262			7,294		7,556
	Other consumer 1			2,328			1,025			981			4,334			131,738		136,072
	Total consumer			11,785			6,183			4,599			22,567			279,361		301,928
	Total		$	13,683		$	7,534		$	9,833		$	31,050		$	828,796	$	859,846
	December 31, 2012
	Commercial
	Commercial & industrial		$	65		$	222		$	521		$	808		$	138,143	$	138,951
	Commercial mortgage			2,050			1,403			5,963			9,416			305,046		314,462
	Commercial construction			0			0			0			0			3,908		3,908
	Total commercial			2,115			1,625			6,484			10,224			447,097		457,321
	Consumer
	Residential mortgage			8,705			4,513			5,190			18,408			146,366		164,774
	Home equity			0			135			0			135			1,076		1,211
	Automobile			314			76			0			390			7,837		8,227
	Other consumer 1			2,389			948			1,187			4,524			126,888		131,412
	Total consumer			11,408			5,672			6,377			23,457			282,167		305,624
	Total		$	13,523		$	7,297		$	12,861		$	33,681		$	729,264	$	762,945
	1	Comprised of other revolving credit, installment loans, and overdrafts.
Loans on Non-Accrual Status, by Portfolio	'
	The following table provides information as of September 30, 2013, and December 31, 2012, with respect to loans on non-accrual status, by portfolio type:
			September 30, 2013			December 31, 2012
			(Dollars in thousands)
	Non-accrual loans:
	Commercial
	Commercial & industrial		$	319		$	685
	Commercial mortgage			6,379			7,977
	Commercial construction			0			0
	Total commercial			6,698			8,662
	Consumer
	Residential mortgage			6,229			7,166
	Home equity			64			76
	Automobile			0			0
	Other consumer 1			226			234
	Total consumer			6,519			7,476
	Total non-accrual loans		$	13,217		$	16,138
	1	Comprised of other revolving credit, installment loans, and overdrafts.
Summary of Loans by Portfolio Type and Internal Credit Quality Ratings	'
	The following table provides a summary of loans by portfolio type and the Bank’s internal credit quality ratings as of September 30, 2013, and December 31, 2012.
			September 30, 2013			December 31, 2012			Increase (Decrease)
			(Dollars in thousands)
	Pass:
	Commercial & industrial		$	176,602		$	123,046		$	53,556
	Commercial mortgage			352,971			290,307			62,664
	Commercial construction			758			3,908			(3,150	)
	Residential mortgage			152,910			158,408			(5,498	)
	Home equity			1,113			1,211			(98	)
	Automobile			7,556			8,227			(671	)
	Other consumer			135,199			130,345			4,854
	Total pass loans		$	827,109		$	715,452		$	111,657
	Special Mention:
	Commercial & industrial		$	416		$	3,752		$	(3,336	)
	Commercial mortgage			13,747			6,839			6,908
	Commercial construction			0			0			0
	Residential mortgage			0			0			0
	Home equity			0			0			0
	Automobile			0			0			0
	Other consumer			0			0			0
	Total special mention loans		$	14,163		$	10,591		$	3,572
	Substandard:
	Commercial & industrial		$	3,390		$	12,153		$	(8,763	)
	Commercial mortgage			9,768			17,316			(7,548	)
	Commercial construction			0			0			0
	Residential mortgage			78			370			(292	)
	Home equity			0			0			0
	Automobile			0			0			0
	Other consumer			0			26			(26	)
	Total substandard loans		$	13,236		$	29,865		$	(16,629	)
	Formula Classified:
	Commercial & industrial		$	146		$	0		$	146
	Commercial mortgage			120			0			120
	Commercial construction			0			0			0
	Residential mortgage			4,199			5,996			(1,797	)
	Home equity			0			0			0
	Automobile			0			0			0
	Other consumer			873			1,041			(168	)
	Total formula classified loans		$	5,338		$	7,037		$	(1,699	)
	Doubtful:
	Commercial & industrial		$	0		$	0		$	0
	Commercial mortgage			0			0			0
	Commercial construction			0			0			0
	Residential mortgage			0			0			0
	Home equity			0			0			0
	Automobile			0			0			0
	Other consumer			0			0			0
	Total doubtful loans		$	0		$	0		$	0
	Total outstanding loans, gross		$	859,846		$	762,945		$	96,901
Non-Accrual Loans and Restructured Loans	'
	The following table sets forth information regarding non-accrual loans and restructured loans, at September 30, 2013, and December 31, 2012:
			September 30, 2013			December 31, 2012
			(Dollars in thousands)
	Impaired loans:
	Restructured loans:
	Non-accruing restructured loans		$	5,676		$	5,970
	Accruing restructured loans			3,625			705
	Total restructured loans			9,301			6,675
	Other non-accruing impaired loans			7,541			10,168
	Other accruing impaired loans			0			0
	Total impaired loans		$	16,842		$	16,843
	Impaired loans less than 90 days delinquent and included in total impaired loans		$	7,889		$	6,058
Information Related to Impaired Loans	'
	The table below contains additional information with respect to impaired loans, by portfolio type, for the nine months ended September 30, 2013, and the year ended December 31, 2012:
			Recorded			Unpaid			Average			Interest
			Investment			Principal			Recorded			Income
						Balance			Investment			Recognized
			(Dollars in thousands)
	September 30, 2013, With no related allowance recorded:
	Commercial & industrial		$	3,469		$	3,622		$	3,141		$	16
	Commercial mortgage			6,854			8,569			7,611			2
	Commercial construction			0			0			0			0
	Residential mortgage			6,229			6,327			6,801			0
	Home equity			64			64			70			0
	Automobile			0			0			0			0
	Other consumer			226			235			225			0
	Total impaired loans with no related allowance		$	16,842		$	18,817		$	17,848		$	18
	September 30, 2013, With an allowance recorded:
	Commercial & industrial		$	0		$	0		$	0		$	0
	Commercial mortgage			0			0			0			0
	Commercial construction			0			0			0			0
	Residential mortgage			0			0			0			0
	Home equity			0			0			0			0
	Automobile			0			0			0			0
	Other consumer			0			0			0			0
	Total impaired loans with an allowance recorded		$	0		$	0		$	0		$	0
	December 31, 2012, With no related allowance recorded:
	Commercial & industrial		$	822		$	975		$	778		$	29
	Commercial mortgage			8,545			10,229			10,204			450
	Commercial construction			0			0			925			0
	Residential mortgage			7,166			7,264			3,313			249
	Home equity			76			76			33			2
	Automobile			0			0			0			0
	Other consumer			234			243			191			8
	Total impaired loans with no related allowance		$	16,843		$	18,787		$	15,444		$	738
	December 31, 2012, With an allowance recorded:
	Commercial & industrial		$	0		$	0		$	0		$	0
	Commercial mortgage			0			0			0			0
	Commercial construction			0			0			0			0
	Residential mortgage			0			0			0			0
	Home equity			0			0			0			0
	Automobile			0			0			0			0
	Other consumer			0			0			0			0
	Total impaired loans with an allowance recorded		$	0		$	0		$	0		$	0
Troubled Debt Restructurings	'
	Additional information regarding performing and non-performing TDRs at September 30, 2013, and December 31, 2012, is set forth in the following table:
			Number of			Pre-Modification			Post-			September 30,			December 31,
			Loans			Outstanding			Modification			2013			2012
						Recorded			Outstanding
						Investment			Recorded
									Investment
			(Dollars in thousands)
	Performing
	Residential mortgage			0		$	0		$	0		$	0		$	0
	Commercial mortgage			6			3,982			3,982			3,625			706
	Automobile			0			0			0			0			0
	Consumer			0			0			0			0			0
				6			3,982			3,982			3,625			706
	Nonperforming
	Residential mortgage			0		$	0		$	0		$	0		$	0
	Commercial mortgage			7			10,120			8,805			5,676			5,970
	Automobile			0			0			0			0			0
	Consumer			0			0			0			0			0
				7			10,120			8,805			5,676			5,970
	Total Troubled Debt Restructurings (TDRs)			13		$	14,102		$	12,787		$	9,301		$	6,676

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Future Lease Commitments	'
	At September 30, 2013, future lease commitments under the above noncancelable operating leases were as follows:
	Periods ending December 31,
	2013	$	1,985
	2014		1,379
	2015		1,072
	2016		886
	Thereafter		19,709
	Total	$	25,289
Summary of Rental Activities	'
	A summary of rental activities for the 9-month periods ended September 30, 2013, and September 30, 2012, is as follows:
		September 30,		September 30,
		2013		2012
	Rent expense	$	1,748	$	1,708
	Less: sublease rentals		200		190
	Net rent expense	$	1,548	$	1,518

Minimum_Regulatory_Capital_Req1

Minimum Regulatory Capital Requirements (Tables)	9 Months Ended
	Sep. 30, 2013
Banking And Thrift [Abstract]	'
Summary of Bank's Actual Capital Amounts and Ratios	'
	The Bank’s actual capital amounts and ratios as of September 30, 2013, and December 31, 2012, are also presented in the table.
		Actual					For Capital Adequacy					To Be Well Capitalized
							Purposes					Under Prompt Corrective
												Action Provisions
		Amount		Ratio			Amount		Ratio			Amount		Ratio
	At September 30, 2013:
	Total capital (to Risk Weighted Assets)	$	106,514		12.53	%	$	67,995		8	%	$	84,994		10	%
	Tier 1 capital (to Risk Weighted Assets)	$	96,011		11.44	%	$	33,577		4	%	$	50,366		6	%
	Tier 1 capital (to Average Assets)	$	96,011		7.31	%	$	52,569		4	%	$	65,711		5	%
	At December 31, 2012:
	Total capital (to Risk Weighted Assets)	$	101,489		13.51	%	$	60,094		8	%	$	75,118		10	%
	Tier 1 capital (to Risk Weighted Assets)	$	92,206		12.43	%	$	29,676		4	%	$	44,514		6	%
	Tier 1 capital (to Average Assets)	$	92,206		7.4	%	$	49,854		4	%	$	62,317		5	%

OffBalanceSheet_Activities_Tab

Off-Balance-Sheet Activities (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Summary of Financial Instruments with Off-Balance-Sheet Risk	'
	A summary of financial instruments with off-balance-sheet risk at September 30, 2013, and December 31, 2012, is as follows:
		September 30,		December 31,
		2013		2012
	Commitments to extend credit	$	108,988	$	100,007
	Letters of credit:
	Standby letters of credit	$	47,554	$	26,178
	Other letters of credit		2,342		3,030
	Total	$	49,896	$	29,208

Fair_Value_of_Assets_and_Liabi1

Fair Value of Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Summary of Financial Assets Measured at Fair Value on Recurring Basis	'
	Financial assets measured at fair value on a recurring basis as of September 30, 2013, and December 31, 2012, are as follows:
		Quoted Prices		Significant		Significant		Total
		in Active		Other		Unobservable
		Markets for		Observable		Inputs
		Identical Assets		Inputs		(Level 3)
		(Level 1)		(Level 2)
	At September 30, 2013
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	0	$	8,472	$	0	$	8,472
	U.S. government agency pool securities		0		55,920		0		55,920
	U.S. government agency or GSE		0		108,442		0		108,442
	Other assets:
	Mortgage Servicing Rights		0		0		1,350		1,350
	Total assets	$	0	$	172,834	$	1,350	$	174,184
	At December 31, 2012
	U.S. government agency and sponsored enterprise (GSE) debt securities	$	0	$	60,145	$	0	$	60,145
	U.S. government agency pool securities		0		73,798		0		73,798
	U.S. government agency or GSE		0		139,579		0		139,579
	Other assets:
	Mortgage Servicing Rights		0		0		1,285		1,285
	Total assets	$	0	$	273,522	$	1,285	$	274,807
Assets Measured at Fair Value on Recurring Basis	'
	During the periods ended September 30, 2013, and December 31, 2012, the changes in Level 3 assets measured at fair value on a recurring basis are as follows:
		September 30, 2013		December 31, 2012
	Beginning balance	$	1,285	$	1,028
	Realized and unrealized net gains:
	Included in net income		65		257
	Included in other comprehensive income		0		0
	Purchases, sales and issuances
	Purchases		0		0
	Sales		0		0
	Issuances		0		0
	Ending balance	$	1,350	$	1,285
Assets Measured at Fair Value on NonRecurring Basis	'
	The following table presents the financial instruments carried on the consolidated statements of condition by caption and by level in the fair value hierarchy at September 30, 2013, and December 31, 2012, for which a nonrecurring change in fair value has been recorded:
		Quoted Prices in		Significant Other		Significant		Total
		Active Markets for		Observable Inputs		Unobservable Inputs
		Identical Assets		(Level 2)		(Level 3)
		(Level 1)
	September 30, 2013
	Financial assets:
	Loans, net
	Impaired loans	$	0	$	0	$	0	$	0
	Other assets
	Other real estate owned	$	0	$	4,538	$	0	$	4,538
	December 31, 2012
	Financial assets:
	Loans, net
	Impaired loans	$	0	$	250	$	0	$	250
	Other assets
	Other real estate owned	$	0	$	4,384	$	0	$	4,384
Fair Value of Other Financial Instruments	'
	The estimated fair values of the Bank’s other financial instruments, excluding those assets recorded at fair value on a recurring basis on the Bank’s consolidated statements of condition, are as follows:
				Estimated fair value
	($ in thousands)	Carrying		Level 1		Level 2		Level 3		Total
		amount
	September 30, 2013
	Financial assets:
	Cash and cash equivalents	$	248,837	$	248,837	$	0	$	0	$	248,837
	Interest bearing deposits with banks		400		400		0		0		400
	Investment securities held to maturity		91,460		0		92,728		0		92,728
	Loans		845,612		0		0		836,439		836,439
	Total	$	1,186,309	$	249,237	$	92,728	$	836,439	$	1,178,404
	Financial liabilities:
	Deposits	$	1,314,323	$	0	$	1,314,204	$	0	$	1,314,204
	Total	$	1,314,323	$	0	$	1,314,204	$	0	$	1,314,204
	December 31, 2012
	Financial assets:
	Cash and cash equivalents	$	74,189	$	74,189	$	0	$	0	$	74,189
	Interest bearing deposits with banks		150		150		0		0		150
	Investment securities held to maturity		58,125		0		60,221		0		60,221
	Loans		748,832		0		0		746,848		746,848
	Total	$	881,296	$	74,339	$	60,221	$	746,848	$	881,408
	Financial liabilities:
	Deposits	$	1,102,540	$	0	$	1,107,142	$	0	$	1,107,142
	Federal Home Loan Bank advances		10,000		0		10,000		0		10,000
	Total	$	1,112,540	$	0	$	1,117,142	$	0	$	1,117,142

Nature_of_Business_Additional_

Nature of Business - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013
	Branch
Nature Of Business [Line Items]	'
Number of branches	23
Guam [Member]	'
Nature Of Business [Line Items]	'
Number of branches	12
CNMI [Member]	'
Nature Of Business [Line Items]	'
Number of branches	5
FSM [Member]	'
Nature Of Business [Line Items]	'
Number of branches	4
RMI [Member]	'
Nature Of Business [Line Items]	'
Number of branches	1
ROP [Member]	'
Nature Of Business [Line Items]	'
Number of branches	1
San Francisco [Member]	'
Nature Of Business [Line Items]	'
Number of branches	1

Earnings_Per_Common_Share_Summ

Earnings Per Common Share - Summary of Earnings Per Common Share (Detail) (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
Weighted Average Number Of Shares Outstanding Diluted Disclosure Items [Abstract]	'	'	'	'
Net income available for common stockholders	$2,335	$1,971	$7,274	$6,760
Weighted average number of common shares outstanding	8,793	8,779	8,788	8,779
Effect of dilutive options	5	1	5	1
Weighted average number of common shares outstanding used to calculate diluted earnings per common share	8,798	8,780	8,793	8,780
Income per common share:	'	'	'	'
Basic	$0.27	$0.22	$0.83	$0.77
Diluted	$0.27	$0.22	$0.83	$0.77

Earnings_Per_Common_Share_Addi

Earnings Per Common Share - Additional Information (Detail) (USD $)	9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Maximum accrue right to purchase stock at the fair market value at the beginning of each offer period of worth	$25
Maximum purchase limit of stock in any one offer period	1,500
Shares are purchased on the basis fair market price of the stock on the enrollment date with the ratio	85.00%

Investment_Securities_Summary_

Investment Securities - Summary of Amortized Cost and Fair Value of Investment Securities, with Gross Unrealized Gains and Losses (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Amortized Cost	$173,818	$270,868
Securities Available for Sale, Gross Unrealized Losses	-1,606	-430
Securities Available for Sale, Gross Unrealized Gains	622	3,084
Securities Available for Sale, Fair Value	172,834	273,522
Securities Held to Maturity, Amortized Cost	91,460	58,125
Securities Held to Maturity, Gross Unrealized Losses	-359	-3
Securities Held to Maturity, Gross Unrealized Gains	1,627	2,099
Securities Held to Maturity, Fair Value	92,728	60,221
U.S. government agency and sponsored enterprise (GSE) debt securities [Member]	'	'
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Amortized Cost	8,420	59,923
Securities Available for Sale, Gross Unrealized Losses	0	-138
Securities Available for Sale, Gross Unrealized Gains	52	360
Securities Available for Sale, Fair Value	8,472	60,145
Securities Held to Maturity, Amortized Cost	32,687	'
Securities Held to Maturity, Gross Unrealized Losses	0	'
Securities Held to Maturity, Gross Unrealized Gains	437	'
Securities Held to Maturity, Fair Value	33,124	'
U.S. government agency pool securities [Member]	'	'
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Amortized Cost	56,270	73,663
Securities Available for Sale, Gross Unrealized Losses	-480	-140
Securities Available for Sale, Gross Unrealized Gains	130	275
Securities Available for Sale, Fair Value	55,920	73,798
Securities Held to Maturity, Amortized Cost	1,800	1,966
Securities Held to Maturity, Gross Unrealized Losses	-9	-3
Securities Held to Maturity, Gross Unrealized Gains	37	45
Securities Held to Maturity, Fair Value	1,828	2,008
U.S. government agency or GSE mortgage-backed securities [Member]	'	'
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Amortized Cost	109,128	137,282
Securities Available for Sale, Gross Unrealized Losses	-1,126	-152
Securities Available for Sale, Gross Unrealized Gains	440	2,449
Securities Available for Sale, Fair Value	108,442	139,579
Securities Held to Maturity, Amortized Cost	56,973	56,159
Securities Held to Maturity, Gross Unrealized Losses	-350	0
Securities Held to Maturity, Gross Unrealized Gains	1,153	2,054
Securities Held to Maturity, Fair Value	$57,776	$58,213

Investment_Securities_Addition

Investment Securities - Additional Information (Detail) (USD $)	9 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
	Securities
Schedule of Trading Securities and Other Trading Assets [Line Items]	'	'
Investment securities, carrying value	$199.60	$142.30
Investment securities in unrealized loss position were not other-than-temporarily impaired	38	'
Small Business Administration (SBA) Pool Securities [Member]	'	'
Schedule of Trading Securities and Other Trading Assets [Line Items]	'	'
Investment securities in unrealized loss position were not other-than-temporarily impaired	15	'
FHLMC Mortgage-Backed Securities [Member]	'	'
Schedule of Trading Securities and Other Trading Assets [Line Items]	'	'
Investment securities in unrealized loss position were not other-than-temporarily impaired	3	'
GNMA Mortgage-Backed Securities [Member]	'	'
Schedule of Trading Securities and Other Trading Assets [Line Items]	'	'
Investment securities in unrealized loss position were not other-than-temporarily impaired	15	'
FNMA Mortgage-Backed Securities [Member]	'	'
Schedule of Trading Securities and Other Trading Assets [Line Items]	'	'
Investment securities in unrealized loss position were not other-than-temporarily impaired	5	'

Investment_Securities_Summary_1

Investment Securities - Summary of Amortized Cost and Fair Value of Investment Securities by Contractual Maturity (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Amortized Cost	$173,818	$270,868
Securities Available for Sale, Fair Value	172,834	273,522
Securities Held to Maturity, Amortized Cost	91,460	58,125
Securities Held to Maturity, Fair Value	92,728	60,221
Due after one but within five years [Member]	'	'
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Amortized Cost	0	4,997
Securities Available for Sale, Fair Value	0	5,035
Securities Held to Maturity, Amortized Cost	0	0
Securities Held to Maturity, Fair Value	0	0
Due After Five Years [Member]	'	'
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Amortized Cost	8,420	54,926
Securities Available for Sale, Fair Value	8,472	55,110
Securities Held to Maturity, Amortized Cost	32,687	0
Securities Held to Maturity, Fair Value	33,124	0
U.S. government agency pool securities [Member]	'	'
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Amortized Cost	56,270	73,663
Securities Available for Sale, Fair Value	55,920	73,798
Securities Held to Maturity, Amortized Cost	1,800	1,966
Securities Held to Maturity, Fair Value	1,828	2,008
Mortgage-Backed Securities [Member]	'	'
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Amortized Cost	109,128	137,282
Securities Available for Sale, Fair Value	108,442	139,579
Securities Held to Maturity, Amortized Cost	56,973	56,159
Securities Held to Maturity, Fair Value	$57,776	$58,213

Investment_Securities_Summary_2

Investment Securities - Summary of Gross Unrealized Losses and Fair Value of Investments with Unrealized Losses of Temporarily Impaired Securities (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Unrealized Loss, Less Than Twelve Months	($1,606)	($413)
Securities Available for Sale, Fair Value, Less Than Twelve Months	118,497	85,177
Securities Available for Sale, Unrealized Loss, More Than Twelve Months	0	-17
Securities Available for Sale, Fair Value, More Than Twelve Months	0	3,292
Securities Available for Sale, Unrealized Loss, Total	-1,606	-430
Securities Available for Sale, Fair Value, Total	118,497	88,469
Securities Held to Maturity, Unrealized Loss, Less Than Twelve Months	-354	0
Securities Held to Maturity, Fair Value, Less Than Twelve Months	19,687	29
Securities Held to Maturity, Unrealized Loss, More Than Twelve Months	-5	-3
Securities Held to Maturity, Fair Value, More Than Twelve Months	288	302
Securities Held to Maturity, Unrealized Loss, Total	-359	-3
Securities Held to Maturity, Fair Value, Total	19,975	331
U.S. government agency and sponsored enterprise (GSE) debt securities [Member]	'	'
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Unrealized Loss, Less Than Twelve Months	0	-138
Securities Available for Sale, Fair Value, Less Than Twelve Months	0	29,836
Securities Available for Sale, Unrealized Loss, More Than Twelve Months	0	0
Securities Available for Sale, Fair Value, More Than Twelve Months	0	0
Securities Available for Sale, Unrealized Loss, Total	0	-138
Securities Available for Sale, Fair Value, Total	0	29,836
Securities Held to Maturity, Unrealized Loss, Less Than Twelve Months	0	0
Securities Held to Maturity, Fair Value, Less Than Twelve Months	0	0
Securities Held to Maturity, Unrealized Loss, More Than Twelve Months	0	0
Securities Held to Maturity, Fair Value, More Than Twelve Months	0	0
Securities Held to Maturity, Unrealized Loss, Total	0	0
Securities Held to Maturity, Fair Value, Total	0	0
U.S. government agency pool securities [Member]	'	'
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Unrealized Loss, Less Than Twelve Months	-480	-139
Securities Available for Sale, Fair Value, Less Than Twelve Months	48,128	29,921
Securities Available for Sale, Unrealized Loss, More Than Twelve Months	0	-1
Securities Available for Sale, Fair Value, More Than Twelve Months	0	76
Securities Available for Sale, Unrealized Loss, Total	-480	-140
Securities Available for Sale, Fair Value, Total	48,128	29,997
Securities Held to Maturity, Unrealized Loss, Less Than Twelve Months	-4	0
Securities Held to Maturity, Fair Value, Less Than Twelve Months	143	29
Securities Held to Maturity, Unrealized Loss, More Than Twelve Months	-5	-3
Securities Held to Maturity, Fair Value, More Than Twelve Months	288	302
Securities Held to Maturity, Unrealized Loss, Total	-9	-3
Securities Held to Maturity, Fair Value, Total	431	331
U.S. government agency or GSE mortgage-backed securities [Member]	'	'
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]	'	'
Securities Available for Sale, Unrealized Loss, Less Than Twelve Months	-1,126	-136
Securities Available for Sale, Fair Value, Less Than Twelve Months	70,369	25,420
Securities Available for Sale, Unrealized Loss, More Than Twelve Months	0	-16
Securities Available for Sale, Fair Value, More Than Twelve Months	0	3,216
Securities Available for Sale, Unrealized Loss, Total	-1,126	-152
Securities Available for Sale, Fair Value, Total	70,369	28,636
Securities Held to Maturity, Unrealized Loss, Less Than Twelve Months	-350	0
Securities Held to Maturity, Fair Value, Less Than Twelve Months	19,544	0
Securities Held to Maturity, Unrealized Loss, More Than Twelve Months	0	0
Securities Held to Maturity, Fair Value, More Than Twelve Months	0	0
Securities Held to Maturity, Unrealized Loss, Total	-350	0
Securities Held to Maturity, Fair Value, Total	$19,544	$0

Loans_Held_for_Sale_Loans_and_2

Loans Held for Sale, Loans and Allowance for Loan Losses - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Origination of mortgage loan held for sale	$25,600,000	'	'
Sale of loans held for sale mortgages	25,600,000	'	'
Increase (Decrease) in total gross loans	96,900,000	96,901,000	'
Loans and Leases Receivable Gross Carrying Amount	859,846,000	'	762,945,000
All loans and credit cards delinquent	'90 days	'	'
Real estate loans delinquent	'90 days	'	'
Delinquent real estate loans foreclosure completion period	'90 days	'	'
Period for loans delinquent under formula category	'60 days	'	'
Reducing the allocated component of reserve	0	'	'
Accrual of interest payments on loan	'90 days	'	'
Troubled Debt Restructurings (TDRs)	9,301,000	'	6,675,000
Commercial [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	100,600,000	'	'
Loans and Leases Receivable Gross Carrying Amount	557,918,000	'	457,321,000
Consumer loans	557,900,000	'	457,300,000
Commercial mortgage [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	62,100,000	'	'
Commercial mortgage [Member] | Commercial [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	376,606,000	'	314,462,000
Commercial & industrial [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	41,600,000	'	'
Commercial & industrial [Member] | Commercial [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	180,554,000	'	138,951,000
Commercial construction [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	3,100,000	'	'
Commercial construction [Member] | Commercial [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	758,000	'	3,908,000
Consumer Loan [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	3,700,000	'	'
Consumer loans	301,900,000	'	305,600,000
Residential Mortgages [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	7,600,000	'	'
Loans and Leases Receivable Gross Carrying Amount	158,300,000	'	165,985,000
Automobile [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	-671,000	'	'
Other consumer loans [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	4,700,000	'	'
Pass [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	111,700,000	111,657,000	'
Loans and Leases Receivable Gross Carrying Amount	827,109,000	'	715,452,000
Commercial and Industrial offset by down gradation	7,800,000	'	'
Commercial and Industrial offset by up gradation	3,000,000	'	'
Pass [Member] | Minimum [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Risk-free credit	1.1	'	'
Pass [Member] | Commercial mortgage [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	62,700,000	62,664,000	'
Loans and Leases Receivable Gross Carrying Amount	352,971,000	'	290,307,000
Change in loan relationship	6,800,000	'	'
Pass [Member] | Commercial & industrial [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	53,600,000	53,556,000	'
Loans and Leases Receivable Gross Carrying Amount	176,602,000	'	123,046,000
Change in loan relationship	2,900,000	'	'
Pass [Member] | Commercial construction [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	-3,150,000	'
Loans and Leases Receivable Gross Carrying Amount	758,000	'	3,908,000
Pass [Member] | Residential Mortgages [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	-5,500,000	-5,498,000	'
Loans and Leases Receivable Gross Carrying Amount	152,910,000	'	158,408,000
Pass [Member] | Automobile [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	-671,000	-671,000	'
Loans and Leases Receivable Gross Carrying Amount	7,556,000	'	8,227,000
Pass [Member] | Other consumer loans [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	4,900,000	4,854,000	'
Loans and Leases Receivable Gross Carrying Amount	135,199,000	'	130,345,000
Pass [Member] | Home equity [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	-98,000	-98,000	'
Loans and Leases Receivable Gross Carrying Amount	1,113,000	'	1,211,000
Formula Classified [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	-1,700,000	-1,699,000	'
Loans and Leases Receivable Gross Carrying Amount	5,338,000	'	7,037,000
Formula Classified [Member] | Commercial mortgage [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	120,000	'
Loans and Leases Receivable Gross Carrying Amount	120,000	'	0
Formula Classified [Member] | Commercial & industrial [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	146,000	'
Loans and Leases Receivable Gross Carrying Amount	146,000	'	0
Formula Classified [Member] | Commercial construction [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	0	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Formula Classified [Member] | Residential Mortgages [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	-1,797,000	'
Loans and Leases Receivable Gross Carrying Amount	4,199,000	'	5,996,000
Formula Classified [Member] | Automobile [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	0	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Formula Classified [Member] | Other consumer loans [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	-168,000	'
Loans and Leases Receivable Gross Carrying Amount	873,000	'	1,041,000
Formula Classified [Member] | Home equity [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	0	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Special Mention [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	3,600,000	3,572,000	'
Loans and Leases Receivable Gross Carrying Amount	14,163,000	'	10,591,000
Special Mention [Member] | Commercial mortgage [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	-3,300,000	6,908,000	'
Loans and Leases Receivable Gross Carrying Amount	13,747,000	'	6,839,000
Special Mention [Member] | Commercial & industrial [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	6,900,000	-3,336,000	'
Loans and Leases Receivable Gross Carrying Amount	416,000	'	3,752,000
Special Mention [Member] | Commercial construction [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	0	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Special Mention [Member] | Residential Mortgages [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	0	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Special Mention [Member] | Automobile [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	0	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Special Mention [Member] | Other consumer loans [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	0	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Special Mention [Member] | Home equity [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	0	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Substandard [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	-16,600,000	-16,629,000	'
Loans and Leases Receivable Gross Carrying Amount	13,236,000	'	29,865,000
Substandard [Member] | Commercial mortgage [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	-7,548,000	'
Loans and Leases Receivable Gross Carrying Amount	9,768,000	'	17,316,000
Change in loan relationship	7,500,000	'	'
Substandard [Member] | Commercial & industrial [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	-8,763,000	'
Loans and Leases Receivable Gross Carrying Amount	3,390,000	'	12,153,000
Change in loan relationship	6,000,000	'	'
Substandard [Member] | Commercial construction [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	0	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Substandard [Member] | Residential Mortgages [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	-292,000	'
Loans and Leases Receivable Gross Carrying Amount	78,000	'	370,000
Substandard [Member] | Automobile [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	0	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Substandard [Member] | Other consumer loans [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	-26,000	'
Loans and Leases Receivable Gross Carrying Amount	0	'	26,000
Substandard [Member] | Home equity [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Increase (Decrease) in total gross loans	'	0	'
Loans and Leases Receivable Gross Carrying Amount	$0	'	$0

Loans_Held_for_Sale_Loans_and_3

Loans Held for Sale, Loans and Allowance for Loan Losses - Loan Portfolio (Detail) (USD $)	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Financing Receivable, Impaired [Line Items]	'	'	'	'
Commercial, Amount	$557,918	'	$457,321	'
Consumer, Amount	301,928	'	305,624	'
Gross loans, Total Amount	859,846	'	762,945	'
Deferred fee (income) costs, net	-2,239	'	-1,885	'
Allowance for loan losses	-11,995	-11,675	-12,228	-11,101
Loans, net	845,612	'	748,832	'
Commercial, Percentage	64.89%	'	59.94%	'
Consumer, Percentage	35.11%	'	40.06%	'
Gross loans, Total Percentage	100.00%	'	100.00%	'
Commercial & industrial [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Commercial, Amount	180,554	'	138,951	'
Commercial, Percentage	21.00%	'	18.21%	'
Commercial mortgage [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Commercial, Amount	376,606	'	314,462	'
Commercial, Percentage	43.80%	'	41.22%	'
Commercial construction [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Commercial, Amount	758	'	3,908	'
Commercial, Percentage	0.09%	'	0.51%	'
Residential Mortgages [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Consumer, Amount	157,187	'	164,774	'
Gross loans, Total Amount	158,300	'	165,985	'
Allowance for loan losses	-1,125	-1,066	-1,453	-318
Consumer, Percentage	18.28%	'	21.60%	'
Home equity [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Consumer, Amount	1,113	'	1,211	'
Consumer, Percentage	0.13%	'	0.16%	'
Automobile [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Consumer, Amount	7,556	'	8,227	'
Consumer, Percentage	0.88%	'	1.08%	'
Other consumer loans [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Consumer, Amount	$136,072	'	$131,412	'
Consumer, Percentage	15.82%	'	17.22%	'

Loans_Held_for_Sale_Loans_and_4

Loans Held for Sale, Loans and Allowance for Loan Losses - Activity of Allowance for Loan Losses (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 Allowance For Credit Losses [Roll Forward]	'	'	'
Balance at beginning of period	$11,675	$12,228	$11,101
Provision for loan losses	900	1,195	3,900
Recoveries on loans previously charged off	493	1,374	3,294
Charged off loans	-1,073	-2,802	-6,067
Balance at end of period	$11,995	$11,995	$12,228

Loans_Held_for_Sale_Loans_and_5

Loans Held for Sale, Loans and Allowance for Loan Losses - Loan Balances and Related Allowance for Loan Losses, by Portfolio Type (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
Allowance for loan losses:	'	'	'
Balance at beginning of period	$11,675	$12,228	$11,101
Charge offs	-1,073	-2,802	-6,067
Recoveries	493	1,374	3,294
Provision	900	1,195	3,900
Balance at end of period	11,995	11,995	12,228
Allowance balance at end of quarter related to:	'	'	'
Loans individually evaluated for impairment	0	0	0
Loans collectively evaluated for impairment	11,995	11,995	12,228
Loan balances at end of quarter:	'	'	'
Loans individually evaluated for impairment	16,842	16,842	16,843
Loans collectively evaluated for impairment	843,004	843,004	746,102
Ending Balance	859,846	859,846	762,945
Commercial [Member]	'	'	'
Allowance for loan losses:	'	'	'
Balance at beginning of period	5,449	6,251	6,654
Charge offs	-25	-95	-1,320
Recoveries	8	61	159
Provision	-64	-849	758
Balance at end of period	5,368	5,368	6,251
Allowance balance at end of quarter related to:	'	'	'
Loans individually evaluated for impairment	0	0	0
Loans collectively evaluated for impairment	5,368	5,368	6,251
Loan balances at end of quarter:	'	'	'
Loans individually evaluated for impairment	10,323	10,323	9,367
Loans collectively evaluated for impairment	547,595	547,595	447,954
Ending Balance	557,918	557,918	457,321
Residential Mortgages [Member]	'	'	'
Allowance for loan losses:	'	'	'
Balance at beginning of period	1,066	1,453	318
Charge offs	-134	-164	-68
Recoveries	135	138	3
Provision	58	-302	1,200
Balance at end of period	1,125	1,125	1,453
Allowance balance at end of quarter related to:	'	'	'
Loans individually evaluated for impairment	0	0	0
Loans collectively evaluated for impairment	1,125	1,125	1,453
Loan balances at end of quarter:	'	'	'
Loans individually evaluated for impairment	6,293	6,293	7,242
Loans collectively evaluated for impairment	152,007	152,007	158,743
Ending Balance	158,300	158,300	165,985
Other [Member]	'	'	'
Allowance for loan losses:	'	'	'
Balance at beginning of period	5,160	4,524	4,129
Charge offs	-914	-2,543	-4,679
Recoveries	350	1,175	3,132
Provision	906	2,346	1,942
Balance at end of period	5,502	5,502	4,524
Allowance balance at end of quarter related to:	'	'	'
Loans individually evaluated for impairment	0	0	0
Loans collectively evaluated for impairment	5,502	5,502	4,524
Loan balances at end of quarter:	'	'	'
Loans individually evaluated for impairment	226	226	234
Loans collectively evaluated for impairment	143,402	143,402	139,405
Ending Balance	$143,628	$143,628	$139,639

Loans_Held_for_Sale_Loans_and_6

Loans Held for Sale, Loans and Allowance for Loan Losses - Summary of Delinquency Status of 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	$13,683	$13,523
60 - 89 Days Past Due	7,534	7,297
90 Days and Greater	9,833	12,861
Total past due loans	31,050	33,681
Current	828,796	729,264
Gross loans, Total Amount	859,846	762,945
Residential Mortgages [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Gross loans, Total Amount	158,300	165,985
Commercial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	1,898	2,115
60 - 89 Days Past Due	1,351	1,625
90 Days and Greater	5,234	6,484
Total past due loans	8,483	10,224
Current	549,435	447,097
Gross loans, Total Amount	557,918	457,321
Commercial [Member] | Commercial & industrial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	605	65
60 - 89 Days Past Due	37	222
90 Days and Greater	465	521
Total past due loans	1,107	808
Current	179,447	138,143
Gross loans, Total Amount	180,554	138,951
Commercial [Member] | Commercial mortgage [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	1,293	2,050
60 - 89 Days Past Due	1,314	1,403
90 Days and Greater	4,769	5,963
Total past due loans	7,376	9,416
Current	369,230	305,046
Gross loans, Total Amount	376,606	314,462
Commercial [Member] | Commercial construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
90 Days and Greater	0	0
Total past due loans	0	0
Current	758	3,908
Gross loans, Total Amount	758	3,908
Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	11,785	11,408
60 - 89 Days Past Due	6,183	5,672
90 Days and Greater	4,599	6,377
Total past due loans	22,567	23,457
Current	279,361	282,167
Gross loans, Total Amount	301,928	305,624
Consumer [Member] | Residential Mortgages [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	9,194	8,705
60 - 89 Days Past Due	5,142	4,513
90 Days and Greater	3,618	5,190
Total past due loans	17,954	18,408
Current	139,233	146,366
Gross loans, Total Amount	157,187	164,774
Consumer [Member] | Home equity [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	17	0
60 - 89 Days Past Due	0	135
90 Days and Greater	0	0
Total past due loans	17	135
Current	1,096	1,076
Gross loans, Total Amount	1,113	1,211
Consumer [Member] | Automobile [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	246	314
60 - 89 Days Past Due	16	76
90 Days and Greater	0	0
Total past due loans	262	390
Current	7,294	7,837
Gross loans, Total Amount	7,556	8,227
Consumer [Member] | Other consumer loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	2,328	2,389
60 - 89 Days Past Due	1,025	948
90 Days and Greater	981	1,187
Total past due loans	4,334	4,524
Current	131,738	126,888
Gross loans, Total Amount	$136,072	$131,412

Loans_Held_for_Sale_Loans_and_7

Loans Held for Sale, Loans and Allowance for Loan Losses - Loans on Non-Accrual Status, by Portfolio (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual loans	$13,217	$16,138
Commercial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual loans	6,698	8,662
Commercial [Member] | Commercial & industrial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual loans	319	685
Commercial [Member] | Commercial mortgage [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual loans	6,379	7,977
Commercial [Member] | Commercial construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual loans	0	0
Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual loans	6,519	7,476
Consumer [Member] | Residential Mortgages [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual loans	6,229	7,166
Consumer [Member] | Home equity [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual loans	64	76
Consumer [Member] | Automobile [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual loans	0	0
Consumer [Member] | Other consumer loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual loans	$226	$234

Loans_Held_for_Sale_Loans_and_8

Loans Held for Sale, Loans and Allowance for Loan Losses - Summary of Loans by Portfolio Type and Internal Credit Quality Ratings (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	$859,846	'	$762,945
Increase (Decrease) in total gross loans	96,900	96,901	'
Commercial & industrial [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Increase (Decrease) in total gross loans	41,600	'	'
Commercial mortgage [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Increase (Decrease) in total gross loans	62,100	'	'
Commercial construction [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Increase (Decrease) in total gross loans	3,100	'	'
Residential Mortgages [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	158,300	'	165,985
Increase (Decrease) in total gross loans	7,600	'	'
Automobile [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Increase (Decrease) in total gross loans	-671	'	'
Other consumer loans [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Increase (Decrease) in total gross loans	4,700	'	'
Pass [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	827,109	'	715,452
Increase (Decrease) in total gross loans	111,700	111,657	'
Pass [Member] | Commercial & industrial [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	176,602	'	123,046
Increase (Decrease) in total gross loans	53,600	53,556	'
Pass [Member] | Commercial mortgage [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	352,971	'	290,307
Increase (Decrease) in total gross loans	62,700	62,664	'
Pass [Member] | Commercial construction [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	758	'	3,908
Increase (Decrease) in total gross loans	'	-3,150	'
Pass [Member] | Residential Mortgages [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	152,910	'	158,408
Increase (Decrease) in total gross loans	-5,500	-5,498	'
Pass [Member] | Home equity [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	1,113	'	1,211
Increase (Decrease) in total gross loans	-98	-98	'
Pass [Member] | Automobile [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	7,556	'	8,227
Increase (Decrease) in total gross loans	-671	-671	'
Pass [Member] | Other consumer loans [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	135,199	'	130,345
Increase (Decrease) in total gross loans	4,900	4,854	'
Special Mention [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	14,163	'	10,591
Increase (Decrease) in total gross loans	3,600	3,572	'
Special Mention [Member] | Commercial & industrial [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	416	'	3,752
Increase (Decrease) in total gross loans	6,900	-3,336	'
Special Mention [Member] | Commercial mortgage [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	13,747	'	6,839
Increase (Decrease) in total gross loans	-3,300	6,908	'
Special Mention [Member] | Commercial construction [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Special Mention [Member] | Residential Mortgages [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Special Mention [Member] | Home equity [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Special Mention [Member] | Automobile [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Special Mention [Member] | Other consumer loans [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Substandard [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	13,236	'	29,865
Increase (Decrease) in total gross loans	-16,600	-16,629	'
Substandard [Member] | Commercial & industrial [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	3,390	'	12,153
Increase (Decrease) in total gross loans	'	-8,763	'
Substandard [Member] | Commercial mortgage [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	9,768	'	17,316
Increase (Decrease) in total gross loans	'	-7,548	'
Substandard [Member] | Commercial construction [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Substandard [Member] | Residential Mortgages [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	78	'	370
Increase (Decrease) in total gross loans	'	-292	'
Substandard [Member] | Home equity [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Substandard [Member] | Automobile [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Substandard [Member] | Other consumer loans [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	26
Increase (Decrease) in total gross loans	'	-26	'
Formula Classified [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	5,338	'	7,037
Increase (Decrease) in total gross loans	-1,700	-1,699	'
Formula Classified [Member] | Commercial & industrial [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	146	'	0
Increase (Decrease) in total gross loans	'	146	'
Formula Classified [Member] | Commercial mortgage [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	120	'	0
Increase (Decrease) in total gross loans	'	120	'
Formula Classified [Member] | Commercial construction [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Formula Classified [Member] | Residential Mortgages [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	4,199	'	5,996
Increase (Decrease) in total gross loans	'	-1,797	'
Formula Classified [Member] | Home equity [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Formula Classified [Member] | Automobile [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Formula Classified [Member] | Other consumer loans [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	873	'	1,041
Increase (Decrease) in total gross loans	'	-168	'
Doubtful [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Doubtful [Member] | Commercial & industrial [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Doubtful [Member] | Commercial mortgage [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Doubtful [Member] | Commercial construction [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Doubtful [Member] | Residential Mortgages [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Doubtful [Member] | Home equity [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Doubtful [Member] | Automobile [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	0	'
Doubtful [Member] | Other consumer loans [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and Leases Receivable Gross Carrying Amount	0	'	0
Increase (Decrease) in total gross loans	'	$0	'

Loans_Held_for_Sale_Loans_and_9

Loans Held for Sale, Loans and Allowance for Loan Losses - Non-Accrual Loans and Restructured Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Restructured loans:	'	'
Non-accruing restructured loans	$5,676	$5,970
Accruing restructured loans	3,625	705
Total restructured loans	9,301	6,675
Other non-accruing impaired loans	7,541	10,168
Other accruing impaired loans	0	0
Total impaired loans	16,842	16,843
Impaired loans less than 90 days delinquent and included in total impaired loans	$7,889	$6,058

Recovered_Sheet1

Loans Held for Sale, Loans and Allowance for Loan Losses - Information Related to Impaired Loans (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]	'	'
Total impaired loans with an allowance recorded, Recorded Investment	$0	$0
Total impaired loans with an allowance recorded, Unpaid Principal Balance	0	0
Total impaired loans with an allowance recorded, Average Recorded Investment	0	0
Total impaired loans with an allowance recorded, Interest Income Recognized	0	0
Total impaired loans with no related allowance, Recorded Investment	16,842	16,843
Total impaired loans with no allowance recorded, Unpaid Principal Balance	18,817	18,787
Total impaired loans with no related allowance, Average Recorded Investment	17,848	15,444
Total impaired loans with no related allowance, Interest Income Recognized	18	738
Commercial & industrial [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Total impaired loans with an allowance recorded, Recorded Investment	0	0
Total impaired loans with an allowance recorded, Unpaid Principal Balance	0	0
Total impaired loans with an allowance recorded, Average Recorded Investment	0	0
Total impaired loans with an allowance recorded, Interest Income Recognized	0	0
Total impaired loans with no related allowance, Recorded Investment	3,469	822
Total impaired loans with no allowance recorded, Unpaid Principal Balance	3,622	975
Total impaired loans with no related allowance, Average Recorded Investment	3,141	778
Total impaired loans with no related allowance, Interest Income Recognized	16	29
Commercial mortgage [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Total impaired loans with an allowance recorded, Recorded Investment	0	0
Total impaired loans with an allowance recorded, Unpaid Principal Balance	0	0
Total impaired loans with an allowance recorded, Average Recorded Investment	0	0
Total impaired loans with an allowance recorded, Interest Income Recognized	0	0
Total impaired loans with no related allowance, Recorded Investment	6,854	8,545
Total impaired loans with no allowance recorded, Unpaid Principal Balance	8,569	10,229
Total impaired loans with no related allowance, Average Recorded Investment	7,611	10,204
Total impaired loans with no related allowance, Interest Income Recognized	2	450
Commercial construction [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Total impaired loans with an allowance recorded, Recorded Investment	0	0
Total impaired loans with an allowance recorded, Unpaid Principal Balance	0	0
Total impaired loans with an allowance recorded, Average Recorded Investment	0	0
Total impaired loans with an allowance recorded, Interest Income Recognized	0	0
Total impaired loans with no related allowance, Recorded Investment	0	0
Total impaired loans with no allowance recorded, Unpaid Principal Balance	0	0
Total impaired loans with no related allowance, Average Recorded Investment	0	925
Total impaired loans with no related allowance, Interest Income Recognized	0	0
Residential Mortgages [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Total impaired loans with an allowance recorded, Recorded Investment	0	0
Total impaired loans with an allowance recorded, Unpaid Principal Balance	0	0
Total impaired loans with an allowance recorded, Average Recorded Investment	0	0
Total impaired loans with an allowance recorded, Interest Income Recognized	0	0
Total impaired loans with no related allowance, Recorded Investment	6,229	7,166
Total impaired loans with no allowance recorded, Unpaid Principal Balance	6,327	7,264
Total impaired loans with no related allowance, Average Recorded Investment	6,801	3,313
Total impaired loans with no related allowance, Interest Income Recognized	0	249
Home equity [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Total impaired loans with an allowance recorded, Recorded Investment	0	0
Total impaired loans with an allowance recorded, Unpaid Principal Balance	0	0
Total impaired loans with an allowance recorded, Average Recorded Investment	0	0
Total impaired loans with an allowance recorded, Interest Income Recognized	0	0
Total impaired loans with no related allowance, Recorded Investment	64	76
Total impaired loans with no allowance recorded, Unpaid Principal Balance	64	76
Total impaired loans with no related allowance, Average Recorded Investment	70	33
Total impaired loans with no related allowance, Interest Income Recognized	0	2
Automobile [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Total impaired loans with an allowance recorded, Recorded Investment	0	0
Total impaired loans with an allowance recorded, Unpaid Principal Balance	0	0
Total impaired loans with an allowance recorded, Average Recorded Investment	0	0
Total impaired loans with an allowance recorded, Interest Income Recognized	0	0
Total impaired loans with no related allowance, Recorded Investment	0	0
Total impaired loans with no allowance recorded, Unpaid Principal Balance	0	0
Total impaired loans with no related allowance, Average Recorded Investment	0	0
Total impaired loans with no related allowance, Interest Income Recognized	0	0
Other consumer loans [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Total impaired loans with an allowance recorded, Recorded Investment	0	0
Total impaired loans with an allowance recorded, Unpaid Principal Balance	0	0
Total impaired loans with an allowance recorded, Average Recorded Investment	0	0
Total impaired loans with an allowance recorded, Interest Income Recognized	0	0
Total impaired loans with no related allowance, Recorded Investment	226	234
Total impaired loans with no allowance recorded, Unpaid Principal Balance	235	243
Total impaired loans with no related allowance, Average Recorded Investment	225	191
Total impaired loans with no related allowance, Interest Income Recognized	$0	$8

Recovered_Sheet2

Loans Held for Sale, Loans and Allowance for Loan Losses - Troubled Debt Restructurings (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	SecurityLoan
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	13	'
Pre-Modification Outstanding Recorded Investment	$14,102	'
Post-Modification Outstanding Recorded Investment	12,787	'
Total Troubled Debt Restructurings (TDRs)	9,301	6,675
Performing [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	6	'
Pre-Modification Outstanding Recorded Investment	3,982	'
Post-Modification Outstanding Recorded Investment	3,982	'
Total Troubled Debt Restructurings (TDRs)	3,625	706
Performing [Member] | Residential Mortgages [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	0	'
Pre-Modification Outstanding Recorded Investment	0	'
Post-Modification Outstanding Recorded Investment	0	'
Total Troubled Debt Restructurings (TDRs)	0	0
Performing [Member] | Commercial mortgage [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	6	'
Pre-Modification Outstanding Recorded Investment	3,982	'
Post-Modification Outstanding Recorded Investment	3,982	'
Total Troubled Debt Restructurings (TDRs)	3,625	706
Performing [Member] | Automobile [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	0	'
Pre-Modification Outstanding Recorded Investment	0	'
Post-Modification Outstanding Recorded Investment	0	'
Total Troubled Debt Restructurings (TDRs)	0	0
Performing [Member] | Other consumer loans [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	0	'
Pre-Modification Outstanding Recorded Investment	0	'
Post-Modification Outstanding Recorded Investment	0	'
Total Troubled Debt Restructurings (TDRs)	0	0
Nonperforming [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	7	'
Pre-Modification Outstanding Recorded Investment	10,120	'
Post-Modification Outstanding Recorded Investment	8,805	'
Total Troubled Debt Restructurings (TDRs)	5,676	5,970
Nonperforming [Member] | Residential Mortgages [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	0	'
Pre-Modification Outstanding Recorded Investment	0	'
Post-Modification Outstanding Recorded Investment	0	'
Total Troubled Debt Restructurings (TDRs)	0	0
Nonperforming [Member] | Commercial mortgage [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	7	'
Pre-Modification Outstanding Recorded Investment	10,120	'
Post-Modification Outstanding Recorded Investment	8,805	'
Total Troubled Debt Restructurings (TDRs)	5,676	5,970
Nonperforming [Member] | Automobile [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	0	'
Pre-Modification Outstanding Recorded Investment	0	'
Post-Modification Outstanding Recorded Investment	0	'
Total Troubled Debt Restructurings (TDRs)	0	0
Nonperforming [Member] | Other consumer loans [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	0	'
Pre-Modification Outstanding Recorded Investment	0	'
Post-Modification Outstanding Recorded Investment	0	'
Total Troubled Debt Restructurings (TDRs)	$0	$0

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
	Entity
	Directors
Commitments And Contingencies Disclosure [Abstract]	'	'
Operating leases contractual term, Minimum	'1 year	'
Operating leases contractual term, Maximum	'99 years	'
Deferred obligation	$745	$698
Number of entities which provide facilities	2	'
Number of directors	2	'
Lease payments made	278	358
Lease of office space to third parties, Minimum	'3 years	'
Lease of office space to third parties, Maximum	'5 years	'
Option period, Maximum	'15 years	'
Minimum future rents to be received under non-cancelable operating sublease agreements, 2013	267	'
Minimum future rents to be received under non-cancelable operating sublease agreements, 2014	54	'
Minimum future rents to be received under non-cancelable operating sublease agreements, 2015	40	'
Minimum future rents to be received under non-cancelable operating sublease agreements, 2016	$27	'

Commitments_and_Contingencies_2

Commitments and Contingencies - Future Lease Commitments (Detail) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Operating Leases Future Minimum Payments Receivable [Abstract]	'
2013	$1,985
2014	1,379
2015	1,072
2016	886
Thereafter	19,709
Total	$25,289

Commitments_and_Contingencies_3

Commitments and Contingencies - Summary of Rental Activities (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Operating Leases Rent Expense [Abstract]	'	'
Rent expense	$1,748	$1,708
Less: sublease rentals	200	190
Net rent expense	$1,548	$1,518

Minimum_Regulatory_Capital_Req2

Minimum Regulatory Capital Requirements - Summary of Bank's Actual Capital Amounts and Ratios (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Regulatory Capital Requirements [Abstract]	'	'
Total capital, Actual Capital	$106,514	$101,489
Tier 1 capital, Actual Capital	96,011	92,206
Tier 1 capital, Actual Capital	96,011	92,206
Total capital to Risk Weighted Assets, Actual Amount	12.53%	13.51%
Tier 1 capital to Risk Weighted Assets, Actual Capital	11.44%	12.43%
Tier 1 capital to Average Assets, Actual Capital	7.31%	7.40%
Total capital for Capital Adequacy Purposes	67,995	60,094
Tier 1 capital for Capital Adequacy Purposes	33,577	29,676
Tier 1 capital for Capital Adequacy Purposes	52,569	49,854
Total capital for Capital Adequacy Purposes to Risk Weighted Assets	8.00%	8.00%
Tier 1 capital for Capital Adequacy Purposes to Risk Weighted Assets	4.00%	4.00%
Tier 1 capital for Capital Adequacy Purposes to Average Assets	4.00%	4.00%
Total capital to be Well Capitalized Under Prompt Corrective Action Provisions	84,994	75,118
Tier 1 capital to be Well Capitalized Under Prompt Corrective Action Provisions	50,366	44,514
Tier 1 capital to be Well Capitalized Under Prompt Corrective Action Provisions	$65,711	$62,317
Total capital to be Well Capitalized Under Prompt Corrective Action Provision to Risk Weighted Assets	10.00%	10.00%
Tier 1 capital to be Well Capitalized Under Prompt Corrective Action Provisions to Risk Weighted Assets	6.00%	6.00%
Tier 1 capital to be Well Capitalized Under Prompt Corrective Action Provisions to Average Assets	5.00%	5.00%

OffBalanceSheet_Activities_Sum

Off-Balance-Sheet Activities - Summary of Financial Instruments with Off-Balance-Sheet Risk (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Loss Contingencies [Line Items]	'	'
Total Letters of credit	$49,896	$29,208
Commitments to extend credit [Member]	'	'
Loss Contingencies [Line Items]	'	'
Total Letters of credit	108,988	100,007
Standby letters of credit [Member]	'	'
Loss Contingencies [Line Items]	'	'
Total Letters of credit	47,554	26,178
Other letters of credit [Member]	'	'
Loss Contingencies [Line Items]	'	'
Total Letters of credit	$2,342	$3,030

OffBalanceSheet_Activities_Add

Off-Balance-Sheet Activities - Additional Information (Detail) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Off Balance Sheet Activities [Abstract]	'	'
Letters of credit expiration date maximum	'1 year	'
Maximum undiscounted future payments	$49,900,000	'
Guarantee maturity maximum	'1 year	'
Liabilities associated with guarantees	0	'
Unpaid principal balances of mortgage loans serviced	204,600,000	197,400,000
Mortgage servicing rights at their fair value	$1,350,000	$1,290,000

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	Sep. 30, 2013
In Millions, unless otherwise specified
Income Tax Disclosure [Abstract]	'
Change in valuation allowance	$2.40

Fair_Value_of_Assets_and_Liabi2

Fair Value of Assets and Liabilities - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Detail) (Fair Value on Recurring Basis [Member], 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]	'	'
Assets fair value disclosure recurring	$174,184	$274,807
U.S. government agency and sponsored enterprise (GSE) debt securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	8,472	60,145
U.S. government agency pool securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	55,920	73,798
U.S. government agency or GSE mortgage-backed securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	108,442	139,579
Mortgage Servicing Rights [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	1,350	1,285
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. government agency and sponsored enterprise (GSE) debt securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. government agency pool securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. government agency or GSE mortgage-backed securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mortgage Servicing Rights [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	0	0
Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	172,834	273,522
Significant Other Observable Inputs (Level 2) [Member] | U.S. government agency and sponsored enterprise (GSE) debt securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	8,472	60,145
Significant Other Observable Inputs (Level 2) [Member] | U.S. government agency pool securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	55,920	73,798
Significant Other Observable Inputs (Level 2) [Member] | U.S. government agency or GSE mortgage-backed securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	108,442	139,579
Significant Other Observable Inputs (Level 2) [Member] | Mortgage Servicing Rights [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	0	0
Significant Unobservable Inputs (Level 3) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	1,350	1,285
Significant Unobservable Inputs (Level 3) [Member] | U.S. government agency and sponsored enterprise (GSE) debt securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	0	0
Significant Unobservable Inputs (Level 3) [Member] | U.S. government agency pool securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	0	0
Significant Unobservable Inputs (Level 3) [Member] | U.S. government agency or GSE mortgage-backed securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	0	0
Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets fair value disclosure recurring	$1,350	$1,285

Fair_Value_of_Assets_and_Liabi3

Fair Value of Assets and Liabilities - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
		Component
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Liabilities measured at fair value on a recurring basis	$0	$0	'	$0
Number of risk components	'	2	'	'
Spread of loan	0.38%	0.38%	'	'
Expected cash flows at a gross interest rate	'	7.40%	'	'
Risk Premium	'	6.00%	'	'
Beta	1	1	'	'
Transfers in or out of the Bank's Level 3 financial assets	'	0	'	0
Loans, Carrying Amount	845,612,000	845,612,000	'	748,832,000
Impairment or disposal of Long-Lived Assets	0	'	'	'
Foreclosed assets sold	'	620,000	670,000	'
Sales deficiencies	43,000	'	'	'
Reserve for OREO Losses	37,000	'	'	'
Other Real Estate Owned ending balance	4,500,000	4,500,000	'	'
Nonfinancial assets or liabilities for which a nonrecurring change in fair value	'	0	'	0
Number of days to maturity federal funds purchased and FHLB advances to be treated as short term borrowings	'	'90 days	'	'
Borrowings	0	0	'	10,145,000
Other real estate owned [Member]	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Number of foreclosed properties	3	'	'	'
Book value of OREO	549,000	549,000	'	'
Number of properties sold	4	'	'	'
Foreclosed assets sold	'	$242,000	'	'
Minimum [Member]	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Fair value of FHLB advances maturing after ninety days	'	'90 days	'	'

Fair_Value_of_Assets_and_Liabi4

Fair Value of Assets and Liabilities - Assets Measured at Fair Value on Recurring Basis (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation Calculation [Roll Forward]	'	'
Beginning balance	$1,285	$1,028
Realized and unrealized net gains:	'	'
Included in net income	65	257
Included in other comprehensive income	0	0
Purchases, sales and issuances	'	'
Purchases	0	0
Sales	0	0
Issuances	0	0
Ending balance	$1,350	$1,285

Fair_Value_of_Assets_and_Liabi5

Fair Value of Assets and Liabilities - Assets Measured at Fair Value on Non Recurring Basis (Detail) (Fair Value, Measurements, Nonrecurring [Member], USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Impaired loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets	$0	$250
Other real estate owned [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets	4,538	4,384
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other real estate owned [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets	0	0
Significant Other Observable Inputs (Level 2) [Member] | Impaired loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets	0	250
Significant Other Observable Inputs (Level 2) [Member] | Other real estate owned [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets	4,538	4,384
Significant Unobservable Inputs (Level 3) [Member] | Impaired loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets	0	0
Significant Unobservable Inputs (Level 3) [Member] | Other real estate owned [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets	$0	$0

Fair_Value_of_Assets_and_Liabi6

Fair Value of Assets and Liabilities - Fair Value of Other Financial Instruments (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financial assets:	'	'
Cash and cash equivalents, Carrying Amount	$21,960	$36,575
Investment securities held to maturity, Carrying Amount	91,460	58,125
Investment securities held to maturity, Fair value	92,728	60,221
Loans, Carrying Amount	845,612	748,832
Financial liabilities:	'	'
Deposits, Carrying Amount	1,314,323	1,102,540
Federal Home Loan Bank advances, Carrying Amount	0	10,145
Estimated fair value [Member]	'	'
Financial assets:	'	'
Cash and cash equivalents, Fair value	248,837	74,189
Interest bearing deposits with banks, Fair value	400	150
Investment securities held to maturity, Fair value	92,728	60,221
Loans, Fair value	836,439	746,848
Total financial assets, Fair value	1,178,404	881,408
Financial liabilities:	'	'
Deposits, Fair value	1,314,204	1,107,142
Federal Home Loan Bank advances, Fair value	'	10,000
Total financial liabilities, Fair value	1,314,204	1,117,142
Estimated fair value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Financial assets:	'	'
Cash and cash equivalents, Fair value	248,837	74,189
Interest bearing deposits with banks, Fair value	400	150
Investment securities held to maturity, Fair value	0	0
Loans, Fair value	0	0
Total financial assets, Fair value	249,237	74,339
Financial liabilities:	'	'
Deposits, Fair value	0	0
Federal Home Loan Bank advances, Fair value	'	0
Total financial liabilities, Fair value	0	0
Estimated fair value [Member] | Significant Other Observable Inputs (Level 2) [Member]	'	'
Financial assets:	'	'
Cash and cash equivalents, Fair value	0	0
Interest bearing deposits with banks, Fair value	0	0
Investment securities held to maturity, Fair value	92,728	60,221
Loans, Fair value	0	0
Total financial assets, Fair value	92,728	60,221
Financial liabilities:	'	'
Deposits, Fair value	1,314,204	1,107,142
Federal Home Loan Bank advances, Fair value	'	10,000
Total financial liabilities, Fair value	1,314,204	1,117,142
Estimated fair value [Member] | Significant Unobservable Inputs (Level 3) [Member]	'	'
Financial assets:	'	'
Cash and cash equivalents, Fair value	0	0
Interest bearing deposits with banks, Fair value	0	0
Investment securities held to maturity, Fair value	0	0
Loans, Fair value	836,439	746,848
Total financial assets, Fair value	836,439	746,848
Financial liabilities:	'	'
Deposits, Fair value	0	0
Federal Home Loan Bank advances, Fair value	'	0
Total financial liabilities, Fair value	0	0
Carrying Amount [Member]	'	'
Financial assets:	'	'
Cash and cash equivalents, Carrying Amount	248,837	74,189
Interest bearing deposits with banks, Carrying Amount	400	150
Investment securities held to maturity, Carrying Amount	91,460	58,125
Loans, Carrying Amount	845,612	748,832
Total financial assets, Carrying value	1,186,309	881,296
Financial liabilities:	'	'
Deposits, Carrying Amount	1,314,323	1,102,540
Federal Home Loan Bank advances, Carrying Amount	'	10,000
Total financial liabilities, Carrying value	$1,314,323	$1,112,540