Pacific Mercantile Bancorp (PMBC) 10-K 2 Mar 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Feb. 28, 2018	Jun. 30, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	PACIFIC MERCANTILE BANCORP
Entity Central Index Key	1,109,546
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	PMBC
Amendment Flag	false
Entity Common Stock, Shares Outstanding		23,305,932
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 134,918,450

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
ASSETS
Cash and due from banks	$ 12,198	$ 16,789
Interest bearing deposits with financial institutions	186,010	122,056
Cash and cash equivalents	198,208	138,845
Interest-bearing time deposits with financial institutions	2,920	3,669
Federal Reserve Bank of San Francisco and Federal Home Loan Bank Stock, at cost	8,107	8,170
Securities available for sale, at fair value	39,738	43,480
Loans (net of allowances of $14,196 and $16,801, respectively)	1,053,201	931,525
Accrued interest receivable	3,872	2,702
Premises and equipment, net	1,094	1,257
Other assets	15,464	11,041
Total assets	1,322,604	1,140,689
Deposits:
Noninterest-bearing	338,273	332,573
Interest-bearing	801,120	668,727
Total deposits	1,139,393	1,001,300
Borrowings	40,866	15,000
Accrued interest payable	397	201
Other liabilities	11,545	6,942
Junior subordinated debentures	17,527	17,527
Total liabilities	1,209,728	1,040,970
Commitments and contingencies (Note 15)
Preferred stock, no par value, 2,000,000 shares authorized:
Common stock, no par value, 85,000,000 shares authorized; 23,232,515 and 23,004,668 shares issued and outstanding at December 31, 2017 and December 31, 2016, respectively	150,689	148,680
Accumulated deficit	(36,670)	(47,119)
Accumulated other comprehensive loss	(1,143)	(1,842)
Total shareholders’ equity	112,876	99,719
Total liabilities and shareholders’ equity	$ 1,322,604	$ 1,140,689

CONSOLIDATED STATEMENTS OF FIN3

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Loans, allowances	$ 14,196	$ 16,801
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Common stock, shares authorized (in shares)	85,000,000	85,000,000
Common stock, shares issued (in shares)	23,232,515	23,004,668
Common stock, shares outstanding (in shares)	23,232,515	23,004,668

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest income:
Loans, including fees	$ 48,957	$ 38,580	$ 36,717
Securities available for sale and stock	1,237	1,578	1,710
Interest-bearing deposits with financial institutions	1,379	842	370
Total interest income	51,573	41,000	38,797
Interest expense:
Deposits	6,958	4,820	4,559
Borrowings	873	657	710
Total interest expense	7,831	5,477	5,269
Net interest income	43,742	35,523	33,528
Provision for loan and lease losses	0	19,870	0
Net interest income after provision for loan and lease losses	43,742	15,653	33,528
Noninterest income
Service fees on deposits and other banking services	1,347	1,093	918
Net loss on sale of securities available for sale	(4)	0	0
Net gain on sale of small business administration loans	0	40	0
Net loss on sale of other assets	(37)	(527)	(58)
Other noninterest income	3,068	2,331	1,826
Total noninterest income	4,374	2,937	2,686
Noninterest expense
Salaries and employee benefits	22,977	21,817	22,002
Occupancy	2,605	3,061	2,871
Equipment and depreciation	1,687	1,802	1,652
Data processing	1,479	1,271	1,035
FDIC expense	1,073	950	1,250
Other real estate owned expense, net	0	(70)	365
Professional fees	4,215	4,046	2,514
Business development	729	795	488
Loan related expense	456	375	414
Insurance	221	291	341
Other operating expense	2,316	2,063	2,392
Total noninterest expense	37,758	36,401	35,324
Income (loss) before income taxes	10,358	(17,811)	890
Income tax (benefit) provision	(91)	16,832	(11,551)
Net income (loss)	10,449	(34,643)	12,441
Dividends on preferred stock	0	0	(927)
Inducements for exchange of the preferred stock	0	0	(512)
Net income (loss) allocable to common shareholders	$ 10,449	$ (34,643)	$ 11,002
Basic income (loss) per common share:
Net income (loss) available to common shareholders (in dollars per common share)	$ 0.45	$ (1.51)	$ 0.54
Diluted income (loss) per common share:
Net income (loss) available to common shareholders (in dollars per common share)	$ 0.45	$ (1.51)	$ 0.53
Weighted average number of common shares outstanding:
Basic (in shares)	23,180,542	22,958,644	20,516,575
Diluted (in shares)	23,312,292	22,958,644	20,675,279

CONSOLIDATED STATEMENT OF COMPR

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 10,449	$ (34,643)	$ 12,441
Other comprehensive income (loss), net of tax:
Change in unrealized holding gain (loss) on securities available for sale	695	(1,032)	(118)
Less: Reclassification adjustment for losses included in net income	(4)	0	0
Net unrealized holding gain (loss) on securities available for sale	699	(1,032)	(118)
Total comprehensive income (loss)	$ 11,148	$ (35,675)	$ 12,323

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Series B and C Preferred stock	Common stock	Retained earnings (accumulated deficit)	Accumulated other comprehensive income (loss)	Series B Preferred StockSeries B and C Preferred stock	Series B Preferred StockCommon stock	Series C Preferred Stock	Series C Preferred StockSeries B and C Preferred stock	Series C Preferred StockCommon stock
Beginning Balance (in shares) at Dec. 31, 2014		141,000	19,463,000
Beginning Balance at Dec. 31, 2014	$ 119,281	$ 11,677	$ 131,181	$ (22,885)	$ (692)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of Preferred Stock to common stock (in shares)						(112,000)	2,105,000		(35,000)	662,000
Exchange of Preferred Stock to common stock						$ (8,747)	$ 8,747		$ (3,523)	$ 3,523
Dividends on preferred stock exchanged for common stock (in shares)			174,000
Dividends on preferred stock exchanged for common stock			$ 927	(927)
Inducement for exchange of preferred stock for common stock (in shares)			68,000
Inducement for exchange of preferred stock for common stock			$ 512	(512)
Costs related to the exchange of preferred stock for common stock	(324)		$ (324)
Issuance of restricted stock, net (in shares)			68,000
Tax effect from vesting of restricted stock (in shares)			(16,000)
Tax effect from vesting of restricted stock	(109)		$ (109)
Series C Preferred Stock issued as a stock dividend on Series B Preferred Stock (in shares)		6,000						5,917
Series C Preferred Stock issued as a stock dividend on Series B Preferred Stock		$ 593		(593)
Common stock based compensation expense	$ 1,234		$ 1,234
Common stock options exercised (in shares)	296,100		296,000
Common stock options exercised	$ 1,511		$ 1,511
Net income (loss)	12,441			12,441
Other comprehensive income (loss)	(118)				(118)
Ending Balance (in shares) at Dec. 31, 2015		0	22,820,000
Ending Balance at Dec. 31, 2015	133,916	$ 0	$ 147,202	(12,476)	(810)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock, net (in shares)			90,000
Tax effect from vesting of restricted stock (in shares)			(2,000)
Tax effect from vesting of restricted stock	(16)		$ (16)
Series C Preferred Stock issued as a stock dividend on Series B Preferred Stock (in shares)								0
Common stock based compensation expense	$ 1,039		$ 1,039
Common stock options exercised (in shares)	97,292		97,000
Common stock options exercised	$ 455		$ 455
Net income (loss)	(34,643)			(34,643)
Other comprehensive income (loss)	(1,032)				(1,032)
Ending Balance (in shares) at Dec. 31, 2016		0	23,005,000
Ending Balance at Dec. 31, 2016	99,719	$ 0	$ 148,680	(47,119)	(1,842)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock, net (in shares)			22,000
Series C Preferred Stock issued as a stock dividend on Series B Preferred Stock (in shares)								0
Common stock based compensation expense	$ 796		$ 796
Common stock options exercised (in shares)	205,970		206,000
Common stock options exercised	$ 1,213		$ 1,213
Net income (loss)	10,449			10,449
Other comprehensive income (loss)	699				699
Ending Balance (in shares) at Dec. 31, 2017		0	23,233,000
Ending Balance at Dec. 31, 2017	$ 112,876	$ 0	$ 150,689	$ (36,670)	$ (1,143)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows From Operating Activities:
Net income (loss)	$ 10,449	$ (34,643)	$ 12,441
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	428	485	525
Provision for loan and lease losses	0	19,870	0
Amortization of premium on securities	221	283	319
Net loss on sale of securities available for sale	4	0	0
Net amortization of deferred fees and unearned income on loans	(388)	(349)	(607)
Net gain on sales of other real estate owned	0	(107)	(44)
Net gain on sale of premises and equipment	(2)	0	(27)
Net loss on sale of other assets	37	527	0
Net gain on sale of small business administration loans	0	(40)	0
Small business administration loan originations	0	(806)	0
Proceeds from sale of small business administration loans	0	840	0
Write down of other real estate owned	0	0	85
Stock-based compensation expense	796	1,039	1,234
Tax effect of restricted stock vesting	0	(16)	(109)
Changes in operating assets and liabilities:
Net (increase) decrease in accrued interest receivable	(1,170)	(436)	170
Net (increase) decrease in other assets	(4,376)	144	(561)
Net decrease in deferred taxes	0	16,837	(11,562)
Net (increase) decrease in income taxes receivable	(215)	681	(49)
Net increase (decrease) in accrued interest payable	196	(54)	33
Net increase (decrease) in other liabilities	4,603	91	80
Net cash used in operating activities	10,583	4,346	1,928
Cash Flows From Investing Activities:
Net decrease in interest-bearing time deposits with financial institutions	749	996	3
Maturities of and principal payments received on securities available for sale and other stock	7,247	8,193	8,409
Purchase of securities available for sale and other stock	(3,350)	0	(283)
Proceeds from sale of securities available for sale and other stock	382	0	0
Principal payments received on other investments	0	0	2,087
Purchase of other investments	(227)	(385)	0
Proceeds from sale of other real estate owned	0	757	1,181
Net increase in loans	(120,205)	(101,331)	(25,209)
Proceeds from sale of other assets	141	33	0
Purchases of premises and equipment	(265)	(600)	(575)
Proceeds from sale of premises and equipment	2	0	27
Net cash used in investing activities	(115,526)	(92,337)	(14,360)
Cash Flows From Financing Activities:
Payments for exchange of preferred stock for common stock	0	0	(324)
Net increase in deposits	138,093	107,460	(22,469)
Proceeds from borrowings	70,000	15,000	0
Payments of borrowings	(45,000)	(10,000)	(29,500)
Proceeds from exercise of common stock options	1,213	455	1,511
Net cash provided by financing activities	164,306	112,915	(50,782)
Net increase (decrease) in cash and cash equivalents	59,363	24,924	(63,214)
Cash and Cash Equivalents, beginning of period	138,845	113,921	177,135
Cash and Cash Equivalents, end of period	198,208	138,845	113,921
Supplementary Cash Flow Information:
Cash paid for interest on deposits and other borrowings	7,635	5,531	5,236
Cash paid for income taxes	123	12	58
Non-Cash Investing Activities:
Transfer of loans into other real estate owned	0	0	280
Transfer of loans into other assets	217	0	0
Participation sold accounted for as other borrowings	866	0	0
Non-Cash Financing Activities:
Series C Preferred Stock issued in connection with dividends on Series B Preferred Stock	0	0	593
Exchange of Series B and Series C Preferred Stock for common stock	$ 0	$ 0	$ 13,709

Nature of Business

Nature of Business	12 Months Ended
	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Nature of Business Organization Pacific Mercantile Bancorp (“PMBC”) is a bank holding company which, through its wholly owned subsidiary, Pacific Mercantile Bank (the “Bank”), is engaged in the commercial banking business in Southern California. PMBC is registered as a one bank holding company under the United States Bank Holding Company Act of 1956, as amended, and, as such, is regulated by the Board of Governors of the Federal Reserve System (the “Federal Reserve Board”) and the Federal Reserve Bank of San Francisco (“FRBSF”) under delegated authority from the Federal Reserve Board. Substantially all of our operations are conducted and substantially all of our assets are owned by the Bank, which accounts for substantially all of our consolidated revenues, expenses, and income. The Bank provides a full range of banking services to small and medium-size businesses and professionals primarily in Orange, Los Angeles, San Bernardino and San Diego counties in Southern California and is subject to competition from, among other things, other banks and financial institutions and from financial services organizations conducting operations in those same markets. The Bank is chartered by the California Department of Business Oversight under the Division of Financial Institutions and is a member of the FRBSF. In addition, the deposit accounts of the Bank’s customers are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to the maximum amount allowed by law. During the first quarter of 2013, PMBC organized a new wholly-owned subsidiary, PM Asset Resolution, Inc. ("PMAR"), for the purpose of purchasing certain non-performing loans and other real estate from the Bank and thereafter collecting or disposing of those assets. PMBC, the Bank and PMAR are sometimes referred to, together, on a consolidated basis, as the “Company” or as “we”, “us” or “our”.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies The accompanying consolidated financial statements have been prepared in accordance with the instructions of the U.S. Securities and Exchange Commission (the “SEC”) to Form 10-K and in accordance with generally accepted accounting principles in effect in the United States (“GAAP”), on a basis consistent with prior periods. Use of Estimates The preparation of the financial statements in conformity with GAAP requires us to make certain estimates and assumptions that could affect the reported amounts of certain of our assets, liabilities, and contingencies at the date of the financial statements and the reported amounts of our revenues and expenses during the reporting periods. Material estimates that are particularly susceptible to changes in the near term relate primarily to our determinations of the allowance for loan and lease losses (“ALLL”), the fair values of securities available for sale, and the determination of reserves pertaining to deferred tax assets. If circumstances or financial trends on which those estimates were based were to change in the future or there were to occur any currently unanticipated events affecting the amounts of those estimates, our future financial position or results of operations could differ, possibly materially, from those expected at the current time. Principles of Consolidation Our consolidated financial statements for the years ended December 31, 2017 , 2016 and 2015 include the accounts of PMBC, the Bank and PMAR. All significant intercompany balances and transactions were eliminated in consolidation. Cash and Cash Equivalents For purposes of the statements of cash flow, cash and cash equivalents consist of cash and due from banks, interest bearing demand deposits with the FRBSF, federal funds sold and interest-bearing deposits, with original maturities of 90 days or less, with financial institutions. Generally, federal funds are sold for one-day periods. As of December 31, 2017 and 2016 , the Bank maintained required reserves with FRBSF of approximately $1,175,000 and $2,109,000 , respectively, which are included in cash and due from banks in the accompanying consolidated statements of financial condition. Federal Home Loan Bank Stock and Federal Reserve Bank Stock The Bank, as a member of the Federal Home Loan Bank System, is required to maintain an investment in capital stock of the Federal Home Loan Bank of San Francisco (“FHLB”) in varying amounts based on asset size and on amounts borrowed from the FHLB. Because no ready market exists and there is no quoted market value for this stock, the Bank’s investment in this stock is carried at cost. The Bank also maintains an investment in capital stock of the FRBSF, which is carried at cost because no ready market exists and there is no quoted market value for this stock. Securities Available for Sale, at Fair Value Securities available for sale are those which we intend to hold for an indefinite period of time, but which may be sold in response to changes in liquidity needs, changes in interest rates, changes in prepayment risks and other similar factors. These securities are recorded at fair value, with unrealized gains and losses excluded from earnings and reported as other comprehensive income or loss, net of taxes. Purchased premiums and discounts are recognized as interest income using the interest method over the term of these securities. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. Declines in the fair value of these securities below their cost which are other-than-temporary are reflected in earnings as realized losses. In determining other-than-temporary losses, we consider a number of factors, including: (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, (3) whether the market decline was affected by macroeconomic conditions, and (4) whether we have the intent to sell the security or it is more likely than not that we will be required to sell the security before its anticipated recovery. A high degree of subjectivity and judgment is involved in assessing whether an other-than-temporary decline exists and such assessments are based on information available to us at the time we make such assessments. Loans and Allowance for Loan and Lease Losses Loans that we intend and have the ability to hold for the foreseeable future or until maturity or pay-off are stated at their respective principal amounts outstanding, net of unearned income. Interest is accrued daily as earned, except where reasonable doubt exists as to collectability of the loan. A loan with principal or interest that is 90 days or more past due, based on its contractual payment due dates, is placed on nonaccrual status, in which case accrual of interest is discontinued, except that we may elect to continue the accrual of interest when the estimated net realizable value of collateral securing the loan is expected to be sufficient to enable us to recover both principal and accrued interest and those loans are in the process of collection. Generally, interest payments received on nonaccrual loans are applied to principal. Once all principal has been received by us, any additional interest payments are recognized as interest income on a cash basis. An ALLL is established by means of a provision for loan and lease losses that is charged against income. If we conclude that the collection, in full, of the carrying amount of a loan has become unlikely, the loan, or the portion thereof that is believed to be uncollectible, is charged against the ALLL. We carefully monitor changing economic conditions, the loan portfolio by category, the financial condition of borrowers and the history of the performance of the loan portfolio in determining the adequacy of the ALLL. Additionally, as the volume of loans increases, additional provisions for loan losses may be required to maintain the allowance at levels deemed adequate. Moreover, if economic conditions were to deteriorate, causing the risk of loan losses to increase, it would become necessary to increase the allowance to an even greater extent, which would necessitate additional provisions that would be charged to income. We also evaluate the unfunded portion of loan commitments and establish a loss reserve, included in other liabilities, for such unfunded commitments through a charge against noninterest expense. The loss reserve for unfunded loan commitments was $350,000 at December 31, 2017 and 2016 . The ALLL is based on estimates, and ultimate loan losses may vary from current estimates. These estimates are reviewed periodically and, as adjustments become necessary, they are recorded in earnings in the periods in which they become known. Impaired Loans A loan is generally classified as impaired when, in management’s opinion, the principal or interest will not be collectible in accordance with its contractual terms. We measure and reserve for impairment on a loan-by-loan basis using either the present value of expected future cash flows discounted at the loan’s effective interest rate, or the fair value of the collateral if the loan is collateral dependent. We exclude smaller, homogeneous loans, such as consumer installment loans and lines of credit, from these impairment calculations. Also, loans that experience insignificant payment delays or shortfalls are generally not considered impaired. Restructured Loans We sometimes modify or restructure loans when the borrower is experiencing financial difficulties by making a concession to the borrower in the form of changes in the amortization terms, reductions in the interest rates, the acceptance of interest only payments and, in limited cases, concessions to the outstanding loan balances. These loans are classified as troubled debt restructurings (“TDRs”) and considered impaired loans. TDRs are loans modified for the purpose of alleviating temporary impairments to the borrower’s financial condition or cash flows. A workout plan between us and the borrower is designed to provide a bridge for borrower cash flow shortfalls in the near term. A TDR loan may be returned to accrual status when the loan is brought current, has performed in accordance with the contractual restructured terms for a time frame of at least six months and the ultimate collectability of the total contractual restructured principal and interest in no longer in doubt. These loans, while no longer considered a TDR, are still considered impaired loans. Loan Origination Fees and Costs Loan origination fees and related direct costs for loans held for investment are deferred and amortized to interest income as an adjustment to yield over the respective lives of the loans using the effective interest method, except for loans that are revolving or short-term in nature for which the straight line method is used, which approximates the interest method. Investment in Unconsolidated Subsidiaries Investment in unconsolidated subsidiaries is stated at cost. The unconsolidated subsidiaries are comprised of two grantor trusts established in 2002 and 2004 in connection with our issuance of subordinated debentures in each of those years. Prior to 2004, we organized two business trusts, under the names PMB Statutory Trust III and PMB Capital Trust III, to facilitate our issuance of $7.2 million and $10.3 million , respectively, principal amount of junior subordinated debentures with maturity dates in 2032 and 2034, respectively. The principal amounts remain outstanding as of December 31, 2017 . Other Real Estate Owned Other real estate owned (“OREO”) consists of real properties acquired by us through foreclosure or in lieu of foreclosure in satisfaction of loans. OREO is recorded at fair value less estimated selling costs at the time of acquisition or foreclosure. Loan balances in excess of fair value, less selling costs, are charged to the ALLL prior to foreclosure. Any subsequent operating expenses or income, reductions in estimated fair values and gains or losses on disposition of such properties are charged or credited to current operations. Premises and Equipment Premises and equipment are stated at cost, less accumulated depreciation and amortization which are charged to expense on a straight-line basis over the estimated useful lives of the assets or, in the case of leasehold improvements, over the term of the leases, whichever is shorter. For income tax purposes, accelerated depreciation methods are used. Maintenance and repairs are charged directly to expense as incurred. Improvements to premises and equipment that extend their useful lives are capitalized. When such an asset is disposed of, the applicable costs and accumulated depreciation thereon are removed from the accounts and any resulting gain or loss is included in current operations. Rates of depreciation and amortization are based on the following estimated useful lives: Furniture and equipment Three to seven years Leasehold improvements Lesser of the lease term or estimated useful life Income Taxes Deferred income taxes and liabilities are determined using the asset and liability method. Under this method, the net deferred tax asset or liability is determined based on the tax effects of the temporary differences between the book and tax basis of the various balance sheet assets and liabilities and gives current recognition to changes in tax rates and laws. We record as a deferred tax asset on our balance sheet an amount equal to the tax credit and tax loss carryforwards and tax deductions ("tax benefits") that we believe will be available to us to offset or reduce the amount of our income taxes in future periods. Under applicable federal and state income tax laws and regulations, 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 (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 statement 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 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. Uncertain tax positions that meet the more likely than not recognition threshold are measured to determine the amount of benefit to recognize. An uncertain tax position is measured at the largest amount of benefit that management believes has a greater than 50% likelihood of realization upon settlement. Earnings (Loss) Per Share Basic income (loss) per share for any fiscal period is computed by dividing net income (loss) allocable to our common shareholders for such period by the weighted average number of common shares outstanding during that period. Fully diluted income (loss) per share reflects the potential dilution that could have occurred assuming the conversion of any convertible securities into common stock at conversion prices, and the exercise of all outstanding options and warrants to purchase shares of our common stock at exercise prices, that were less than the market price of our shares, thereby increasing the number of shares outstanding during the period, and is determined using the treasury method. Although accumulated undeclared dividends on our preferred stock are not recorded in the accompanying consolidated statement of operations, such dividends are included for purposes of computing earnings (loss) per share available to our common shareholders. Stock Option Plans We follow Financial Accounting Standards Board (“FASB”) Accounting Standard Codification (“ASC”) 718-10, Share-Based Payment , which requires entities that grant stock options or other equity compensation awards to employees to recognize in their financial statements the fair values of those options or share awards as compensation cost over their requisite service (vesting) periods of those options or share awards. Since stock-based compensation cost that is recognized in the statements of operations is to be determined based on the equity compensation awards that we expect will ultimately vest, that compensation expense is reduced for any forfeitures of unvested options or unvested share awards that typically occur due primarily to terminations of employment of optionees or recipients of such share awards. In accordance with Accounting Standard Update (“ASU”) 2016-09, forfeitures are recognized as they occur instead of applying an estimated forfeiture rate to each grant, which was the previous practice. For purposes of the determination of stock-based compensation expense for the year ended December 31, 2017 , we recognized actual forfeitures of 68,467 and 19,030 shares subject to the stock option and restricted stock awards that were granted to officers and other employees, respectively. Comprehensive Income (Loss) Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. However, certain changes in assets and liabilities, such as unrealized gains and losses on securities available for sale, are reported as a separate component of the equity in the accompanying consolidated statement of financial condition, net of income taxes, and such items, along with net income, are components of comprehensive income (loss). Segment Reporting During the years ended December 31, 2017 , 2016 and 2015 , we had one reportable segment, which was our commercial banking division, and one non-reportable segment which was our discontinued operations related to our mortgage banking division. In connection with our exit from the mortgage banking business in 2013, the revenues and expenses of our mortgage banking division have been classified as discontinued operations for all periods presented. Recent Accounting Pronouncements In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606),” which amended its guidance on revenue recognition to conform with international accounting guidance under the International Accounting Standards Board. The ASU provides a framework for addressing revenue recognition and replaces most existing revenue recognition guidance, as well as requires increased disclosure requirements. In August 2015, the FASB issued ASU 2015-14 to defer the effective date of ASU 2014-09 by one year. Accordingly, this guidance is effective for interim and annual periods beginning after December 15, 2017 with early adoption permitted for interim and annual periods beginning after December 15, 2016. We adopted this guidance on January 1, 2018 using the modified retrospective approach. We do not expect any significant impact on our financial statements as the accounting for interest income on loans and investments, loan service fee income, prepayment fees, and loan origination fees are excluded from the scope of this standard. We expect a minimal impact on our disclosures as a result of expanded disclosure guidance. In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements — Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern,” which defines management's responsibility to evaluate whether there is substantial doubt about an organization's ability to continue as a going concern and clarifies when to provide related footnote disclosure. This guidance is effective for interim and annual periods beginning after December 15, 2016. Early adoption was permitted. We adopted this guidance on January 1, 2017 and it had no effect on our consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, “Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities,” which enhances the reporting model for financial instruments to provide users of financial statements with more useful information. Some of the provisions include: requiring equity investments to be measured at fair value with changes in fair value recognized in net income, simplifying the impairment assessment of equity investments without readily determinable fair values, eliminating the requirement to disclose the method and significant assumptions used to estimate fair value on financial instruments measured at amortized cost on the balance sheet, requiring public business entities to use the exit price notion when measuring the fair value of financial instruments, requiring the reporting organization to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the organization has elected to measure the liability at fair value in accordance with the fair value option, requiring separate presentation of financial assets and liabilities by measurement category and form of financial asset on the balance sheet or notes to the financial statements, and clarifying that the reporting organization should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the organization's other deferred tax assets. This guidance is effective for interim and annual periods beginning after December 15, 2017. Early adoption is not permitted for public companies. We adopted this guidance on January 1, 2018. We do not expect adoption of this guidance to have a material impact on our consolidated financial statements as we only have one available-for-sale equity investment where the change in fair value will be recognized in net income, as compared to the current practice of flowing through other comprehensive income. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842),” which requires lessees to recognize the following for all leases (with the exception of short-term leases) at the commencement date: a lease liability measured on a discounted basis and a right-of-use asset a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged and the accounting for sale and leaseback transactions were simplified. This guidance is effective for interim and annual periods beginning after December 15, 2018. Early adoption is permitted. We will adopt this guidance on January 1, 2019. We expect our statement of financial condition to be grossed up on both the asset and liability side to reflect our lease obligations, and we do not expect adoption of this guidance to have a material impact on our other consolidated financial statements or on our disclosures related to leases. In March 2016, the FASB issued ASU 2016-09, “Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting,” which simplifies how several aspects of share-based payments are accounted for and presented in the financial statements. Under the new guidance, some of the aspects that are simplified include: income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. This guidance is effective for interim and annual periods beginning after December 15, 2016. Early adoption was permitted. We adopted this guidance on January 1, 2017. As of December 31, 2016, we had excess tax benefits of approximately $211 thousand for which a benefit could not be previously recognized. Upon adoption, the balance of the unrecognized excess tax benefits was reversed with the impact recorded to retained earnings including any change to the valuation allowance as a result of the adoption. Due to the full valuation allowance on the deferred tax assets, there was no impact to our consolidated financial statements as a result of this adoption. Upon adoption of this guidance, we elected to recognize forfeitures as they occur instead of applying an estimated forfeiture rate to each grant, which was the previous practice. The recorded impact to our beginning retained earnings was less than $10 thousand and not considered material. On a prospective basis, we expect the new guidance could create quarterly volatility in our noninterest expense as forfeitures occur. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” which requires the measurement of all expected credit losses for financial assets held at the reporting date, based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions will now use forward-looking information to better inform their credit loss estimates. Additionally, the ASU amends the accounting guidance for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. This guidance is effective for interim and annual periods beginning after December 15, 2019. Early adoption is permitted for interim and annual periods beginning after December 15, 2018. We will adopt this guidance on January 1, 2020 and expect that it will have a material impact on the determination of our ALLL. We are unable to estimate the expected impact to the ALLL upon adoption due to various factors, primarily the fine tuning of our qualitative assumptions used within our preliminary model, uncertainty regarding economic conditions and the size and mix of our loan portfolio at the time of adoption, which could impact our historical loss factors. We are currently working with our existing ALLL software provider on further developing the model to perform the ALLL calculations upon adoption and we believe that we currently have in place the internal team capable of handling this implementation. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments,” which provides guidance for classification of specific items on the statement of cash flows. This guidance is effective for interim and annual periods beginning after December 15, 2017. Early adoption is permitted. We adopted this guidance on January 1, 2018 and do not expect it to have a material impact on our statement of cash flows. In January 2017, the FASB issued ASU 2017-03, “Accounting Changes and Error Corrections (Topic 250) and Investments - Equity Method and Joint Ventures (Topic 323): Amendments to SEC Paragraphs Pursuant to Staff Announcements at the September 22, 2016 and November 16, 2016 EITF Meetings,” which incorporates into FASB accounting standards recent SEC guidance requiring expanded disclosure on the effect of implementation in advance of a company's adoption of a new accounting standard, specifically those related to revenue recognition, leases, financial instruments and credit losses. This guidance was effective immediately. We adopted this guidance upon the date of issuance and have increased the disclosure of the effect of recently issued accounting standards on future periods in this Form 10-K. We will continue to provide expanded disclosure and updates on the estimated effect of recently issued accounting guidance through the period of adoption. This guidance only affected the financial statement footnote disclosures and had no impact on the financial statements. In May 2017, the FASB issued ASU 2017-09, “Compensation — Stock Compensation (Topic 718): Scope of Modification Accounting,” which provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting. This guidance is effective for interim and annual periods beginning after December 15, 2017. Early adoption is permitted. We adopted this guidance on January 1, 2018 and do not expect it to have a material impact on our financial statements and disclosures. Subsequent Events Subsequent events are events or transactions that occur after the balance sheet date but before financial statements are issued. The Company recognizes in the financial statements the effects of all subsequent events that provide additional evidence about conditions that existed at the date of the balance sheet, including the estimates inherent in the process of preparing the financial statements. The Company’s financial statements do not recognize subsequent events that provide evidence about conditions that did not exist at the date of the balance sheet but arose after the balance sheet date and before financial statements are available to be issued. The Company has evaluated events subsequent to the balance sheet date through the date these consolidated financial statements were filed with the SEC.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Under FASB ASC 820-10, we group assets and liabilities 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. These levels are: Level 1 Valuation is based upon quoted prices for identical instruments traded in active markets. Level 2 Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques. Risks with Fair Value Measurements Fair value estimates are made at a discrete point in time based on relevant market information and other information about the financial instruments. Because no active market exists for a significant portion of our financial instruments, fair value estimates are based in large part on judgments we make primarily regarding current economic conditions, risk characteristics of various financial instruments, prepayment rates, and future expected loss experience. These estimates are subjective in nature and invariably involve some inherent uncertainties. Additionally, the occurrence of unexpected events or changes in circumstances can occur that could require us to make changes to our assumptions and which, in turn, could significantly affect and require us to make changes to our previous estimates of fair value. In addition, the fair value estimates are based on existing on and off-balance sheet financial instruments without attempting to estimate the value of existing and anticipated future customer relationships and the value of assets and liabilities that are not considered financial instruments, such as premises and equipment and OREO. Measurement Methodology Cash and Cash Equivalents. The fair value of cash and cash equivalents approximates its carrying value. Interest-Bearing Deposits with Financial Institutions. The fair values of interest-bearing deposits maturing within one year approximate their carrying values. FHLB and FRBSF Stock. The Bank is a member of the FHLB and the FRBSF. As members, we are required to own stock of the FHLB and the FRBSF, the amount of which is based primarily on the level of our borrowings from those institutions. We also have the right to acquire additional shares of stock in either or both of the FHLB and the FRBSF. During the year ended December 31, 2017 , we purchased $38 thousand of FHLB stock and $317 thousand of FRBSF stock. During the year ended December 31, 2017 , 8,354 shares, or $418 thousand , of FRBSF stock was called by FRBSF. The fair values of the FHLB and FRBSF stock are equal to their respective carrying amounts, are classified as restricted securities and are periodically evaluated for impairment based on our assessment of the ultimate recoverability of our investments in that stock. Any cash or stock dividends paid to us on such stock are reported as income. Investment Securities Available for Sale. Fair value measurement for our investment securities available for sale is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 investment securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the- counter markets and money market funds. Level 2 investment securities include mortgage-backed securities issued by government sponsored entities, municipal bonds and corporate debt securities. Securities classified as Level 3 include asset-backed securities in less liquid markets. Other Investments . Other investments accounted for under the cost method of accounting are carried at their respective carrying amounts and are periodically evaluated for impairment based on our assessment of the ultimate recoverability of our investment. In the event that there are no identified events or changes in circumstances that may have a significant adverse effect on the fair value of the investment and it is not practicable to estimate the fair value of the investment, then the fair value of such investment is not estimated. Any cash or stock dividends paid to us on such investments are reported as noninterest income. Impaired Loans . Loans measured for impairment are measured at an observable market price (if available), or the fair value of the loan’s collateral (if the loan is collateral dependent). The fair value of an impaired loan may be estimated using one of several methods, including collateral value, market value of similar debt, liquidation value and discounted cash flows. Those impaired loans not requiring a specific loan loss reserve represent loans for which the fair value of the expected repayments or collateral exceeds the recorded investments in such loans. When the fair value of the collateral is based on an observable market price or a current appraised value, we record the impaired loan at Level 2. When an appraised value is not available or we determine that the fair value of the collateral is further impaired below the appraised value and there is no observable market price, we record the impaired loan at Level 3. Loans . The fair value for loans with variable interest rates less a credit discount is the carrying amount. The fair value of fixed rate loans is derived by calculating the present value of expected future cash flows discounted at the loan’s original interest rate by the various homogeneous categories of loans. All loans have been adjusted to reflect changes in credit risk. Changes are not recorded directly as an adjustment to current earnings or comprehensive income, but rather as an adjustment component in determining the overall adequacy of the loan loss reserve. Other Foreclosed Assets. Other foreclosed assets is reported at its net realizable value (fair value less estimated costs to sell), at the time any collateral other than real estate is acquired by the Bank in satisfaction of a loan. Subsequently, other foreclosed assets are carried at the lower of carrying value or fair value less estimated costs to sell. Fair value is determined based upon independent market prices, appraised values of the collateral or management’s estimation of the value of the collateral. When the fair value of the collateral is based on an observable market price or a current appraised value, we record the foreclosed asset at Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, we record the foreclosed asset at Level 3. Deposits. Deposits are carried at historical cost. The carrying amounts of deposits from savings and money market accounts are deemed to approximate fair value as they either have no stated maturities or short-term maturities. Certificates of deposit are estimated utilizing discounted cash flow techniques. The interest rates applied are rates currently being offered for similar certificates of deposit. Borrowings. The fair value of borrowings is the carrying amount for those borrowings that mature on a daily basis. The fair value of term borrowings is derived by calculating the discounted value of future cash flows expected to be paid out by the Company. We classify our borrowings in Level 2 of the fair value hierarchy. Junior Subordinated Debentures. The fair value of the junior subordinated debentures is based on quoted market prices of the underlying securities. These securities are variable rate in nature and repriced quarterly. We classify our junior subordinated debentures in Level 2 of the fair value hierarchy. Commitments to Extend Credit and Standby Letters of Credit. The fair value of commitments to extend credit and standby letters of credit are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. Interest Receivable and Interest Payable. The carrying amounts of our accrued interest receivable and accrued interest payable are deemed to approximate fair value. Assets Recorded at Fair Value on a Recurring Basis The following tables show the recorded amounts of assets and liabilities measured at fair value on a recurring basis at December 31, 2017 and 2016 . At December 31, 2017 (Dollars in thousands) Total Level 1 Level 2 Level 3 Assets and Liabilities at Fair Value: Investment securities available for sale U.S. Treasury securities $ 2,971 $ — $ 2,971 $ — Mortgage backed securities issued by U.S. agencies $ 30,122 $ — $ 30,122 $ — Collateralized mortgage obligations issued by non-agency — — — — Asset-backed securities 1,741 — — 1,741 Mutual funds 4,904 4,904 — — Total securities available for sale at fair value $ 39,738 $ 4,904 $ 33,093 $ 1,741 At December 31, 2016 (Dollars in thousands) Total Level 1 Level 2 Level 3 Assets and Liabilities at Fair Value: Investment securities available for sale Mortgage backed securities issued by U.S. agencies $ 36,675 $ — $ 36,675 $ — Collateralized mortgage obligations issued by non agency 468 — 468 — Asset-backed securities 1,433 — — 1,433 Mutual funds 4,904 4,904 — — Total securities available for sale at fair value $ 43,480 $ 4,904 $ 37,143 $ 1,433 The changes in Level 3 assets measured at fair value on a recurring basis are summarized as follows for the year ended December 31, 2017 : Asset Backed Securities (Dollars in thousands) Balance of recurring Level 3 instruments at December 31, 2016 $ 1,433 Total gains or losses (realized/unrealized): Included in other comprehensive income 308 Balance of Level 3 assets at December 31, 2017 $ 1,741 Assets Recorded at Fair Value on a Nonrecurring Basis We may be required, from time to time, to measure certain assets at fair value on a nonrecurring basis in accordance with GAAP. These nonrecurring fair value adjustments typically involve application of lower of cost or market accounting or write-downs of individual assets. Information regarding assets measured at fair value on a nonrecurring basis is set forth in the table below. At December 31, 2017 At December 31, 2016 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets at Fair Value: (Dollars in thousands) Impaired loans $ 6,360 $ — $ — $ 6,360 $ 24,897 $ — $ — $ 24,897 There were no transfers in or out of Level 3 measurements for nonrecurring items during the year ended December 31, 2017 . Significant Unobservable Inputs and Valuation Techniques of Level 3 Fair Value Measurements For our fair value measurements classified in Level 3 of the fair value hierarchy as of December 31, 2017 , a summary of the significant unobservable inputs and valuation techniques is as follows: Fair Value Measurement as of December 31, 2017 Valuation Techniques Unobservable Inputs Range Weighted Average (Dollars in thousands) Assets Asset-backed security $ 1,741 Third-Party Pricing Marketability discount N/A (1) Illiquidity discount N/A (1) Impaired loans 6,360 Third-Party Pricing Discounted cash flow N/A (2) $ 8,101 (1) Information is unavailable as valuation was obtained from third-party pricing services. (2) We obtain appraisals for our various properties included within impaired loans which primarily rely upon market comparisons. These market comparisons support our assumption that the carrying value of the respective loans either requires or does not require additional impairment. Fair Value Measurements for Other Financial Instruments The table below provides estimated fair values and related carrying amounts of our financial instruments as of December 31, 2017 and December 31, 2016 , excluding financial assets and liabilities which are recorded at fair value on a recurring basis. Estimated Fair Value At December 31, 2017 At December 31, 2016 Carrying Value Total Level 1 Level 2 Level 3 Carrying Value Total Level 1 Level 2 Level 3 (Dollars in thousands) Financial assets: Cash and cash equivalents $ 198,208 $ 198,208 $ 198,208 $ — $ — $ 138,845 $ 138,845 138,845 — — Interest-bearing deposits with financial institutions 2,920 2,920 2,920 — — 3,669 3,669 3,669 — — Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock 8,107 8,107 8,107 — — 8,170 8,170 8,170 — — Loans, net 1,053,201 1,046,171 — — 1,046,171 931,525 928,885 — — 928,885 Accrued interest receivable 3,872 3,872 3,872 — — 2,702 2,702 2,702 — — Financial liabilities: Noninterest bearing deposits 338,273 338,273 338,273 — — 332,573 332,573 332,573 — — Interest-bearing deposits 801,120 800,169 — 800,169 — 668,727 668,089 — 668,089 — Borrowings 40,866 41,238 — 41,238 — 15,000 15,000 — 15,000 — Junior subordinated debentures 17,527 17,527 — 17,527 — 17,527 17,527 — 17,527 — Accrued interest payable 397 397 397 — — 201 201 201 — —

Investments

Investments	12 Months Ended
	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Investments	Investments Securities Available For Sale, at Fair Value The following table sets forth the major components of securities available for sale and compares the amortized costs and estimated fair market values of, and the gross unrealized gains and losses on, these securities at December 31, 2017 and 2016 : (Dollars in thousands) December 31, 2017 December 31, 2016 Amortized Cost Gross Unrealized Estimated Fair Value Amortized Cost Gross Unrealized Estimated Fair Value Gain Loss Gain Loss Securities Available for Sale US Treasury securities $ 2,996 $ — $ (25 ) $ 2,971 $ — $ — $ — $ — Mortgage backed securities issued by U.S. Agencies (1) $ 30,894 $ 5 $ (777 ) $ 30,122 $ 37,813 $ 6 $ (1,144 ) $ 36,675 Collateralized mortgage obligations issued by non agencies (1) — — — — 484 — (16 ) 468 Asset backed security (2) 1,992 — (251 ) 1,741 2,025 — (592 ) 1,433 Mutual funds (3) 5,000 11 (107 ) 4,904 5,000 11 (107 ) 4,904 Total $ 40,882 $ 16 $ (1,160 ) $ 39,738 $ 45,322 $ 17 $ (1,859 ) $ 43,480 (1) Secured by closed-end first liens on 1-4 family residential mortgages. (2) Comprised of a security that represents an interest in a pool of trust preferred securities issued by U.S.-based banks and insurance companies. (3) Consists primarily of mutual fund investments in closed-end first lien 1-4 family residential mortgages. At December 31, 2017 and 2016 , U.S. agency mortgage backed securities and collateralized mortgage obligations with an aggregate fair market value of $22.7 million and $21.1 million , respectively, were pledged to secure FHLB borrowings, repurchase agreements, local agency deposits and treasury, tax and loan accounts. The amortized cost and estimated fair values of securities available for sale at December 31, 2017 and December 31, 2016 are shown in the tables below by contractual maturities taking into consideration historical prepayments based on the prior twelve months of principal payments. Expected maturities will differ from contractual maturities and historical prepayments, particularly with respect to collateralized mortgage obligations, primarily because prepayment rates are affected by changes in conditions in the interest rate market and, therefore, future prepayment rates may differ from historical prepayment rates. At December 31, 2017 Maturing in (Dollars in thousands) One year or less Over one year through five years Over five years through ten years Over ten Years Total Securities available for sale, amortized cost $ 5,685 $ 23,772 $ 8,956 $ 2,469 $ 40,882 Securities available for sale, estimated fair value 5,543 23,253 8,727 2,215 39,738 Weighted average yield 1.49 % 1.60 % 1.63 % 3.86 % 1.73 % At December 31, 2016 Maturing in (Dollars in thousands) One year or less Over one year through five years Over five years through ten years Over ten Years Total Securities available for sale, amortized cost $ 8,068 $ 24,014 $ 9,933 $ 3,307 $ 45,322 Securities available for sale, estimated fair value 7,831 23,344 9,619 2,686 43,480 Weighted average yield 1.48 % 1.52 % 1.58 % 2.76 % 1.62 % During the year ended December 31, 2017 , we purchased $3.0 million of securities available for sale. No securities available for sale were purchased during the years ended December 31, 2016 and 2015. During the year ended December 31, 2017 , we had $382 thousand of proceeds from sales of securities available for sale for a total net loss of $4 thousand . We had no sales of securities available for sale during the years ended December 31, 2016 and 2015. The tables below indicate, as of December 31, 2017 and 2016 , the gross unrealized losses and fair values of our investments, aggregated by investment category, and length of time that the individual securities have been in a continuous unrealized loss position. Securities with Unrealized Loss at December 31, 2017 Less than 12 months 12 months or more Total (Dollars in thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities $ 2,971 $ (25 ) $ — $ — $ 2,971 $ (25 ) Residential mortgage backed securities issued by U.S. Agencies $ 1,400 $ (15 ) $ 28,241 $ (762 ) $ 29,641 $ (777 ) Non-agency collateralized mortgage obligations — — — — — — Asset backed security — — 1,740 (251 ) 1,740 (251 ) Mutual funds 1,485 (15 ) 2,658 (92 ) 4,143 (107 ) Total $ 5,856 $ (55 ) $ 32,639 $ (1,105 ) $ 38,495 $ (1,160 ) Securities With Unrealized Loss as of December 31, 2016 Less than 12 months 12 months or more Total (Dollars In thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Residential mortgage backed securities issued by U.S. Agencies $ 16,110 $ (267 ) $ 19,975 $ (877 ) $ 36,085 $ (1,144 ) Non-agency collateralized mortgage obligations — — 468 (16 ) 468 (16 ) Asset backed security — — 1,433 (592 ) 1,433 (592 ) Mutual funds 3,185 (65 ) 957 (42 ) 4,142 (107 ) Total $ 19,295 $ (332 ) $ 22,833 $ (1,527 ) $ 42,128 $ (1,859 ) We regularly monitor investments for significant declines in fair value. We have determined that declines in the fair values of these investments below their respective amortized costs, as set forth in the tables above, are temporary because (i) those declines were due to interest rate changes and not to a deterioration in the creditworthiness of the issuers of those investment securities, and (ii) we have the intent and ability to hold those securities until there is a recovery in their values or until their maturity. We recognize other-than-temporary impairments (“OTTI”) to our available-for-sale debt securities in accordance with FASB ASC 320-10. When there are credit losses associated with, but we have no intention to sell, an impaired debt security, and it is more likely than not that we will not have to sell the security before recovery of its cost basis, we will separate the amount of impairment, or OTTI, between the amount that is credit related and the amount that is related to non-credit factors. Credit-related impairments are recognized in our consolidated statements of operations. Any non-credit-related impairments are recognized and reflected in other comprehensive income (loss). Through the impairment assessment process, we determined that the available-for-sale securities discussed below were other-than-temporarily impaired at December 31, 2017 . We recorded no impairment credit losses on available-for-sale securities in our consolidated statements of operations for the years ended December 31, 2017 and 2016 . The OTTI related to factors other than credit losses, in the aggregate amount of $251 thousand , was recognized as other comprehensive loss in our accompanying consolidated statement of financial condition at December 31, 2017 . The table below presents, for the years ended December 31, 2017 and 2016 , a roll-forward of OTTI in those instances when a portion of the OTTI was attributable to non-credit related factors and, therefore, was recognized in other comprehensive loss: (Dollars in thousands) Gross Other- Than- Temporary Impairments Other-Than- Temporary Impairments Included in Other Comprehensive Loss Net Other-Than- Temporary Impairments Included in Retained Earnings (Deficit) Balance – December 31, 2015 $ (1,100 ) $ (547 ) $ (553 ) Changes in market value on securities for which an OTTI was previously recognized (47 ) (47 ) — Principal received on OTTI security 2 2 — Balance – December 31, 2016 $ (1,145 ) $ (592 ) $ (553 ) Change in market value on a security for which an OTTI was previously recognized 308 308 — Principal received on OTTI security 33 33 — Balance – December 31, 2017 $ (804 ) $ (251 ) $ (553 ) In determining the component of OTTI related to credit losses, we compare the amortized cost basis of each OTTI security to the present value of its expected cash flows, discounted using the effective interest rate implicit in the security at the date of acquisition. As a part of our OTTI assessment process with respect to securities held for sale with unrealized losses, we consider available information about (i) the performance of the collateral underlying each such security, including any credit enhancements, (ii) historical prepayment speeds, (iii) delinquency and default rates, (iv) loss severities, (v) the age or “vintage” of the security, and (vi) any rating agency reports on the security. Significant judgments are required with respect to these and other factors in order to make a determination of the future cash flows that can be expected to be generated by the security. Based on our OTTI assessment process, we determined that there is one asset-backed security in our portfolio of securities held for sale that was impaired as of December 31, 2017 . This security is a multi-class, cash flow collateralized bond obligation backed by a pool of trust preferred securities issued by a diversified pool of 56 issuers that consisted of 45 U.S. depository institutions and 11 insurance companies at the time of the security’s issuance in November 2007. We purchased $3.0 million face amount of this security in November 2007 at a price of 95.21% for a total purchase price of $2.9 million , out of a total of $363 million of this security sold at the time of issuance. The security that we own (CUSIP 74042CAE8) is the mezzanine class B piece security with a variable interest rate of 3 month LIBOR plus 60 basis points, which had a rating of Aa2 and AA by Moody’s and Fitch, respectively, at the time of issuance in 2007. As of December 31, 2017 , the amortized cost of this security was $2.0 million with a fair value of $1.7 million , for an unrealized loss of approximately $251 thousand . As of December 31, 2017 , the security had a Baa3 rating from Moody’s and a B rating from Fitch and had experienced $42.5 million in defaults ( 12.7% of total current collateral) and $7.0 million in deferring securities ( 2.1% of total current collateral) from issuance to December 31, 2017 . As of December 31, 2017 , the mezzanine class B tranche had $63.8 million in excess subordination. We have made a determination that the remainder of our securities with respect to which there were unrealized losses as of December 31, 2017 are not other-than-temporarily impaired, because we have concluded that we have the intent and ability to continue to hold those securities until their respective fair market values increase above their respective amortized costs or, if necessary, until their respective maturities. In reaching that conclusion we considered a number of factors and other information, which included: (i) the significance of each such security, (ii) the amount of the unrealized losses attributable to each such security, (iii) our liquidity position, (iv) the impact that retention of those securities could have on our capital position and (v) our evaluation of the expected future performance of these securities (based on the criteria discussed above). Other Investments As of December 31, 2017 , we had two investments in limited partnerships which were accounted for under the cost method of accounting and included within other assets on the consolidated statements of financial condition. During the year ended December 31, 2017 and 2016, we contributed $227 thousand and $385 thousand , respectively, to these investments. As of December 31, 2017 and December 31, 2016 , our other investment was as follows: December 31, 2017 2016 (Dollars in thousands) Investments accounted for under the cost method (1) $ 893 $ 666 (1) Represents the aggregate carrying amount of our investments that were not evaluated for impairment.

Loans and Allowance for Loan an

Loans and Allowance for Loan and Lease Losses	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Loans and Allowance for Loan and Lease Losses	Loans and Allowance for Loan and Lease Losses The loan portfolio consisted of the following at: December 31, 2017 December 31, 2016 (Dollars in thousands) Amount Percent Amount Percent Commercial loans $ 394,493 37.1 % $ 333,376 35.2 % Commercial real estate loans – owner occupied 214,365 20.1 % 214,420 22.7 % Commercial real estate loans – all other 228,090 21.4 % 173,223 18.3 % Residential mortgage loans – multi-family 114,302 10.7 % 130,930 13.8 % Residential mortgage loans – single family 24,848 2.3 % 34,527 3.6 % Construction and land development loans 34,614 3.3 % 18,485 2.0 % Consumer loans 53,918 5.1 % 41,563 4.4 % Gross loans 1,064,630 100.0 % 946,524 100.0 % Deferred fee (income) costs, net 2,767 1,802 Allowance for loan and lease losses (14,196 ) (16,801 ) Loans, net $ 1,053,201 $ 931,525 At December 31, 2017 and 2016 , real estate loans of approximately $669 million and $527 million , respectively, were pledged to secure borrowings obtained from the FHLB. During the year ended December 31, 2017 , we purchased $30.1 million of performing commercial real estate - owner occupied and commercial real estate - all other loans. We purchased $85.8 million of performing residential multi-family mortgage and commercial real estate - all other loans during the year ended December 31, 2016 . No loans were purchased during the year ended December 31, 2015. Allowance for Loan and Lease Losses The ALLL represents our estimate of credit losses in our loan and lease portfolio that are probable and estimable at the balance sheet date. We employ economic models that are based on bank regulatory guidelines, industry standards and our own historical loan loss experience, as well as a number of more subjective qualitative factors, to determine both the sufficiency of the ALLL and the amount of the provisions that are required to increase or replenish the ALLL. The ALLL is first determined by (i) analyzing all classified loans (graded as “Substandard” or “Doubtful” under our internal asset quality grading parameters) on non-accrual status for loss exposure and (ii) establishing specific reserves as needed. ASC 310-10 defines loan impairment as the existence of uncertainty concerning collection of all principal and interest in accordance with the contractual terms of a loan. For collateral dependent loans, impairment is typically measured by comparing the loan amount to the fair value of collateral, less estimated costs to sell, with any “shortfall” amount charged off. Other methods can be used in estimating impairment, including market price and the present value of expected future cash flows discounted at the loan’s original interest rate. We are an active lender with the U.S. Small Business Administration and collection of a percentage of the loan balance of many of the loans originated is guaranteed. The ALLL reserves are calculated against the non-guaranteed loan balances. On a quarterly basis, we utilize a classification based loan loss migration model as well as review individual loans in determining the adequacy of the ALLL for homogenous pools of loans that are not subject to specific reserve allocations. Our loss migration analysis tracks 16 quarters of loan loss history and industry loss factors to determine historical losses by classification category for each loan type, except certain consumer loans (automobile, mortgage and credit cards). We then apply these calculated loss factors, together with qualitative factors based on external economic conditions and trends and internal assessments, to the outstanding loan balances in each homogenous group of loans, and then, using our internal asset quality grading parameters, we grade the loans as “Pass,” “Special Mention,” “Substandard” or “Doubtful”. We analyze impaired loans individually. This grading is based on the credit classifications of assets as prescribed by government regulations and industry standards and is separated into the following groups: • Pass: Loans classified as pass include current loans performing in accordance with contractual terms, installment/consumer loans that are not individually risk rated, and loans which exhibit certain risk factors that require greater than usual monitoring by management. • Special Mention: Loans classified as special mention, while generally not delinquent, have potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or in the Bank’s credit position at some future date. • Substandard: Loans classified as substandard have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. There is a distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. • Doubtful: Loans classified as doubtful have all the weaknesses inherent in a substandard loan, and may also be at delinquency status and have defined weaknesses based on currently existing facts, conditions and values making collection or liquidation in full highly questionable and improbable. Set forth below is a summary of the activity in the ALLL, by portfolio type, during the years ended December 31, 2017 , 2016 and 2015 . (Dollars in thousands) Commercial Real Estate Construction and Land Development Consumer and Single Family Mortgages Unallocated Total ALLL in the year ended December 31, 2017: Balance at beginning of year $ 11,276 $ 4,226 $ 343 $ 642 $ 314 $ 16,801 Charge offs (4,124 ) (432 ) — (179 ) — (4,735 ) Recoveries 1,852 72 27 179 — 2,130 Provision 151 (960 ) 280 401 128 — Balance at end of year $ 9,155 $ 2,906 $ 650 $ 1,043 $ 442 $ 14,196 ALLL in the year ended December 31, 2016: Balance at beginning of year $ 6,639 $ 5,109 $ 282 $ 686 $ — $ 12,716 Charge offs (15,390 ) (1,119 ) — (540 ) — (17,049 ) Recoveries 1,189 1 57 17 — 1,264 Provision 18,838 235 4 479 314 19,870 Balance at end of year $ 11,276 $ 4,226 $ 343 $ 642 $ 314 $ 16,801 ALLL in the year ended December 31, 2015: Balance at beginning of year $ 7,670 $ 5,133 $ 296 $ 734 $ — $ 13,833 Charge offs (2,643 ) — (85 ) (199 ) — (2,927 ) Recoveries 1,798 4 — 8 — 1,810 Provision (186 ) (28 ) 71 143 — — Balance at end of year $ 6,639 $ 5,109 $ 282 $ 686 $ — $ 12,716 Set forth below is information regarding loan balances and the related ALLL, by portfolio type, as of December 31, 2017 and December 31, 2016 . (Dollars in thousands) Commercial Real Estate Land Development Consumer and Single Family Mortgages Unallocated Total ALLL balance at December 31, 2017 related to: Loans individually evaluated for impairment $ 7 $ — $ — $ — $ — $ 7 Loans collectively evaluated for impairment $ 9,148 $ 2,906 $ 650 $ 1,043 $ 442 $ 14,189 Total $ 9,155 $ 2,906 $ 650 $ 1,043 $ 442 $ 14,196 Loans balance at December 31, 2017 related to: Loans individually evaluated for impairment $ 3,672 $ 2,461 $ — $ 227 $ — $ 6,360 Loans collectively evaluated for impairment 390,821 554,296 34,614 78,539 — 1,058,270 Total $ 394,493 $ 556,757 $ 34,614 $ 78,766 $ — $ 1,064,630 ALLL balance at December 31, 2016 related to: Loans individually evaluated for impairment $ 2,042 $ — $ — $ — $ — $ 2,042 Loans collectively evaluated for impairment $ 9,234 $ 4,226 $ 343 $ 642 $ 314 $ 14,759 Total $ 11,276 $ 4,226 $ 343 $ 642 $ 314 $ 16,801 Loans balance at December 31, 2016 related to: Loans individually evaluated for impairment $ 20,330 $ 4,346 $ — $ 221 $ — $ 24,897 Loans collectively evaluated for impairment 313,046 514,227 18,485 75,869 — 921,627 Total $ 333,376 $ 518,573 $ 18,485 $ 76,090 $ — $ 946,524 Credit Quality The amounts of nonperforming assets and delinquencies that occur within our loan portfolio factors in our evaluation of the adequacy of the ALLL. The following table provides a summary of the delinquency status of loans by portfolio type at December 31, 2017 and 2016 : (Dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days and Greater Total Past Due Current Total Loans Outstanding Loans >90 Days and Accruing At December 31, 2017 Commercial loans $ 1,387 $ — $ 2,125 $ 3,512 $ 390,981 $ 394,493 $ — Commercial real estate loans – owner-occupied — — — — 214,365 214,365 — Commercial real estate loans – all other — 936 — 936 227,154 228,090 — Residential mortgage loans – multi-family — — — — 114,302 114,302 — Residential mortgage loans – single family — — — — 24,848 24,848 — Land development loans — — — — 34,614 34,614 — Consumer loans — — — — 53,918 53,918 — Total $ 1,387 $ 936 $ 2,125 $ 4,448 $ 1,060,182 $ 1,064,630 $ — At December 31, 2016 Commercial loans $ 7,055 $ — $ 13,946 $ 21,001 $ 312,375 $ 333,376 $ — Commercial real estate loans – owner-occupied 275 2,341 1,003 3,619 210,801 214,420 — Commercial real estate loans – all other 512 1,014 — 1,526 171,697 173,223 — Residential mortgage loans – multi-family — — — — 130,930 130,930 — Residential mortgage loans – single family — — — — 34,527 34,527 — Land development loans — — — — 18,485 18,485 — Consumer loans 38 — — 38 41,525 41,563 — Total $ 7,880 $ 3,355 $ 14,949 $ 26,184 $ 920,340 $ 946,524 $ — Generally, the accrual of interest on a loan is discontinued when principal or interest payments become more than 90 days past due, unless we believe that the loan is adequately collateralized and it is in the process of collection. There were no loans 90 days or more past due and still accruing interest at December 31, 2017 or December 31, 2016 . In certain instances, 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 such payments are applied to accrued and unpaid interest, which is credited to income. Non-accrual loans may be restored to accrual status when principal and interest become current and full repayment becomes expected. The following table provides information with respect to loans on nonaccrual status, by portfolio type, as of December 31, 2017 and 2016 : December 31, 2017 2016 (Dollars in thousands) Nonaccrual loans: Commercial loans $ 3,222 $ 20,330 Commercial real estate loans – owner occupied 893 2,643 Commercial real estate loans – all other 1,568 1,703 Residential mortgage loans – single family 171 221 Consumer loans 56 — Total (1) $ 5,910 $ 24,897 (1) Nonaccrual loans may include loans that are currently considered performing loans. We classify our loan portfolio using internal credit quality ratings. The following table provides a summary of loans by portfolio type and our internal credit quality ratings as of December 31, 2017 and 2016 , respectively. December 31, (Dollars in thousands) 2017 2016 Increase (Decrease) Pass: Commercial loans $ 375,024 $ 287,717 $ 87,307 Commercial real estate loans – owner occupied 207,094 197,497 9,597 Commercial real estate loans – all other 226,522 169,292 57,230 Residential mortgage loans – multi family 114,302 130,930 (16,628 ) Residential mortgage loans – single family 24,677 34,306 (9,629 ) Construction and land development loans 34,614 18,485 16,129 Consumer loans 53,862 41,563 12,299 Total pass loans $ 1,036,095 $ 879,790 $ 156,305 Special Mention: Commercial loans $ 11,009 $ 4,672 $ 6,337 Commercial real estate loans – owner occupied 6,378 7,834 (1,456 ) Commercial real estate loans – all other — 2,228 (2,228 ) Total special mention loans $ 17,387 $ 14,734 $ 2,653 Substandard: Commercial loans $ 8,094 $ 37,668 $ (29,574 ) Commercial real estate loans – owner occupied 893 9,089 (8,196 ) Commercial real estate loans – all other 1,568 1,703 (135 ) Residential mortgage loans – single family 171 221 (50 ) Consumer loans 56 — 56 Total substandard loans $ 10,782 $ 48,681 $ (37,899 ) Doubtful: Commercial loans $ 366 $ 3,319 $ (2,953 ) Total doubtful loans $ 366 $ 3,319 $ (2,953 ) Total Loans: $ 1,064,630 $ 946,524 $ 118,106 Impaired Loans A loan generally is classified as impaired and placed on nonaccrual status when, in our opinion, principal or interest is not likely to be collected in accordance with the contractual terms of the loan agreement. We measure for impairments on a loan-by-loan basis, using either the present value of expected future cash flows discounted at the loan’s effective interest rate, or the fair value of the collateral if the loan is collateral dependent. The following table sets forth information regarding impaired loans, at December 31, 2017 and December 31, 2016 : December 31, (Dollars in thousands) 2017 2016 Impaired loans: Nonaccruing loans $ 5,101 $ 15,966 Nonaccruing restructured loans 809 8,931 Accruing restructured loans (1) 450 — Total impaired loans $ 6,360 $ 24,897 Impaired loans less than 90 days delinquent and included in total impaired loans $ 3,994 $ 9,948 (1) See "Troubled Debt Restructurings" below for a description of accruing restructured loans at December 31, 2017 and December 31, 2016 . The table below contains additional information with respect to impaired loans, by portfolio type, as of December 31, 2017 and 2016 : December 31, 2017 December 31, 2016 Recorded Investment Unpaid Principal Balance Related Allowance (1) Recorded Investment Unpaid Principal Balance Related Allowance (1) (Dollars in thousands) No allowance recorded: Commercial loans $ 3,222 $ 5,910 $ — $ 17,021 $ 19,048 $ — Commercial real estate loans – owner occupied 893 945 — 2,643 4,335 — Commercial real estate loans – all other 1,568 1,965 — 1,703 1,965 — Residential mortgage loans – single family 171 185 — 221 225 — Consumer loans 56 73 — — — — Total 5,910 9,078 — 21,588 25,573 — With allowance recorded: Commercial loans $ 450 $ 450 $ 7 $ 3,309 $ 4,764 $ 2,042 Total 450 450 7 3,309 4,764 2,042 Total Commercial loans $ 3,672 $ 6,360 $ 7 $ 20,330 $ 23,812 $ 2,042 Commercial real estate loans – owner occupied 893 945 — 2,643 4,335 — Commercial real estate loans – all other 1,568 1,965 — 1,703 1,965 — Residential mortgage loans – single family 171 185 — 221 225 — Consumer loans 56 73 — — — — Total 6,360 9,528 7 24,897 30,337 2,042 (1) When the discounted cash flows, collateral value or market price equals or exceeds the recorded investment in the loan, then specific reserves are not required to be set aside for the loan within the ALLL. This typically occurs when the impaired loans have been partially charged-off and/or there have been interest payments received and applied to the balance of the principal outstanding. At December 31, 2017 and December 31, 2016 , there were $5.9 million and $21.6 million , respectively, of impaired loans for which no specific reserves had been allocated because these loans, in our judgment, were sufficiently collateralized. Of the impaired loans at December 31, 2017 for which no specific reserves were allocated, $3.1 million had been deemed impaired in the prior year. Average balances and interest income recognized on impaired loans, by portfolio type, for the year ended December 31, 2017 , 2016 and 2015 were as follows: Year Ended December 31, 2017 2016 2015 Average Balance Interest Income Recognized Average Balance Interest Income Recognized Average Balance Interest Income Recognized No allowance recorded: Commercial loans $ 10,178 $ 128 $ 13,686 $ 437 $ 13,455 $ 178 Commercial real estate loans – owner occupied 1,215 — 2,455 3 2,494 115 Commercial real estate loans – all other 1,616 — 4,413 — 6,256 337 Residential mortgage loans – multi-family — — 350 — 451 13 Residential mortgage loans – single family 183 — 339 9 3,137 — Construction and land development loans — — 871 — 1,665 7 Consumer loans 80 5 173 — — — Total 13,272 133 22,287 449 27,458 650 With allowance recorded: Commercial loans 3,150 33 4,728 457 528 — Commercial real estate loans – owner occupied — — 962 — 815 — Total 3,150 33 5,690 457 1,343 — Total Commercial loans 13,328 161 18,414 894 13,983 178 Commercial real estate loans – owner occupied 1,215 — 3,417 3 3,309 115 Commercial real estate loans – all other 1,616 — 4,413 — 6,256 337 Residential mortgage loans – multi-family — — 350 — 451 13 Residential mortgage loans – single family 183 — 339 9 3,137 — Construction and land development loans — — 871 — 1,665 7 Consumer loans 80 5 173 — — — Total $ 16,422 $ 166 $ 27,977 $ 906 $ 28,801 $ 650 The interest that would have been earned had the impaired loans remained current in accordance with their original terms was $462 thousand in 2017 , $1.2 million in 2016 and $899 thousand in 2015 . Troubled Debt Restructurings Pursuant to the FASB's ASU No. 2011-2, A Creditor's Determination of whether a Restructuring is a Troubled Debt Restructuring , the Company's TDRs totaled $1.3 million and $8.9 million at December 31, 2017 and December 31, 2016 , respectively. TDRs consist of loans to which modifications have been made for the purpose of alleviating temporary impairments of the borrower's financial condition and cash flows. Those modifications have come in the forms of changes in amortization terms, reductions in interest rates, interest only payments and, in limited cases, concessions to outstanding loan balances. The modifications are made as part of workout plans we enter into with the borrower that are designed to provide a bridge for the borrower's cash flow shortfalls in the near term. If a borrower works through the near term issues, then in most cases, the original contractual terms of the borrower's loan will be reinstated. Of the $1.3 million of TDRs outstanding at December 31, 2017 , $450 thousand were performing in accordance with their terms and accruing interest. Our impairment analysis determined $7 thousand of specific reserves were required on the TDR balances outstanding at December 31, 2017 . The following table presents loans restructured as TDRs during the years ended December 31, 2017 , 2016 and 2015 : Year Ended December 31, 2017 2016 2015 (Dollars in thousands) Number of loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Performing Commercial loans 1 $ 450 $ 450 — $ — $ — 2 $ 147 $ 147 Commercial real estate - owner occupied — — — — — — 1 177 177 Commercial real estate – all other — — — — — — 1 400 400 1 450 450 — — — 4 724 724 Nonperforming Commercial loans 1 1,329 809 — — — 3 2,634 2,634 Commercial real estate – owner occupied — — — — — — 2 1,778 1,778 Commercial real estate – all other — — — — — — 1 4,114 4,114 1 1,329 809 — — — 6 8,526 8,526 Total troubled debt restructurings (1) 2 $ 1,779 $ 1,259 — $ — $ — 10 $ 9,250 $ 9,250 (1) No loans were restructured during the year ended December 31, 2016. During the years ended December 31, 2017 , 2016 and 2015 , TDRs that were modified within the preceding 12-month period which subsequently defaulted were as follows: Year Ended December 31, 2017 2016 2015 Number of loans Recorded Investment Number of loans Recorded Investment Number of loans Recorded Investment (Dollars in thousands) Commercial real estate - owner occupied (1) — $ — 1 $ 753 1 $ 4,114 (1) As of December 31, 2017, no TDRs were modified within the preceding 12-month period which subsequently defaulted.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and Equipment The major classes of premises and equipment are as follows: (Dollars in thousands) December 31, 2017 2016 Furniture and equipment $ 6,549 $ 7,589 Leasehold improvements 23 206 6,572 7,795 Accumulated depreciation and amortization (5,478 ) (6,538 ) Total $ 1,094 $ 1,257 The amount of depreciation and amortization included in operating expense was $428,000 , $485,000 and $525,000 for the years ended December 31, 2017 , 2016 and 2015 , respectively.

Deposits

Deposits	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Deposits	Deposits Asset At December 31, 2017 , we had $186.0 million in interest bearing deposits at other financial institutions, as compared to $122.1 million at December 31, 2016 . The weighted average percentage yields on these deposits for each of the years ended December 31, 2017 and December 31, 2016 was 1.12% and 0.51% , respectively. Interest bearing deposits with financial institutions can be withdrawn on demand and are considered cash equivalents for purposes of the consolidated statements of cash flows. At December 31, 2017 and December 31, 2016 , we had $2.9 million and $3.7 million , respectively, of interest-bearing time deposits at other financial institutions, which were scheduled to mature within one year or had no stated maturity date. The weighted average percentage yields on these deposits were 1.07% and 0.86% for the years ended December 31, 2017 and December 31, 2016 , respectively. Liability The aggregate amount of time deposits in denominations of $250,000 or more at December 31, 2017 and 2016 was $94.1 million and $49 million , respectively. The scheduled maturities of time deposits in denominations of $250,000 or more at December 31, 2017 were as follows: (Dollars in thousands) At December 31, 2017 2018 $ 59,802 2019 32,649 2020 760 2021 — 2022 and beyond 928 Total $ 94,139

Borrowings and Contractual Obli

Borrowings and Contractual Obligations	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Borrowings and Contractual Obligations	Borrowings and Contractual Obligations At December 31, 2017 and 2016 , our borrowings and contractual obligations consisted of the following: December 31, (Dollars in thousands) 2017 2016 FHLB advances—short-term $ 40,000 $ 15,000 Other borrowings—short-term (1) 866 — Total borrowings—short-term 40,866 15,000 FHLB advances—long-term — — Total $ 40,866 $ 15,000 (1) Borrowings mature on March 31, 2018 and have an interest rate of 15% . This represents the portion of a participated loan that is required under GAAP to be recorded as other borrowings. The table below sets forth the amounts of, the interest rates we pay on, and the maturity dates of these FHLB borrowings. These borrowings had a weighted-average annualized interest rate of 1.65% for the year ended December 31, 2017 . Principal Amounts Interest Rate Maturity Dates (Dollars in thousands) 10,000 1.48 % March 1, 2018 10,000 1.62 % June 1, 2018 10,000 1.72 % September 4, 2018 10,000 1.77 % December 3, 2018 At December 31, 2017 , $669 million of loans were pledged to support our FHLB borrowings and our unfunded borrowing capacity. As of December 31, 2017 , we had unused borrowing capacity of $285 million with the FHLB. The highest amount of borrowings outstanding at any month-end during the year ended December 31, 2017 was $40.9 million . As of December 31, 2016 , we had $15.0 million of outstanding short-term borrowings and no outstanding long-term borrowings that we had obtained from the FHLB. These borrowings had a weighted-average annualized interest rate of 0.55% for the year ended December 31, 2016 . As of December 31, 2016 we had unused borrowing capacity of $272 million with the FHLB. The highest amount of borrowings outstanding at any month-end during the year ended December 31, 2016 was $15 million . These FHLB borrowings were obtained in accordance with the Company’s asset/liability management objective to reduce the Company’s exposure to interest rate fluctuations and increase our contingent funding. Junior Subordinated Debentures . We formed two grantor trusts to sell and issue to institutional investors floating junior trust preferred securities ("trust preferred securities"). The net proceeds from the sales of the trust preferred securities was used in exchange for our issuance to the grantor trusts for the principal amount of our junior subordinated floating rate debentures (the "Debentures"). The payment terms of the Debentures are used by the grantor trusts to make the payments that come due to the holders of the trust preferred securities pursuant to the terms of those securities. The Debentures also were pledged by the grantor trusts as security for the payment obligations of the grantor trusts under the trust preferred securities. Set forth below are the respective principal amounts, and certain other information regarding the terms of the Debentures that remained outstanding as of December 31, 2017 and 2016 : Original Issue Dates Principal Amount Interest Rate (1) Maturity Dates (In thousands) September 2002 $ 7,217 LIBOR plus 3.40% September 2032 October 2004 10,310 LIBOR plus 2.00% October 2034 Total $ 17,527 (1) Interest rate resets quarterly. These Debentures require quarterly interest payments, which are used to make quarterly distributions required to be paid on the corresponding trust preferred securities. Subject to certain conditions, we have the right, at our discretion, to defer those interest payments, and the corresponding distributions on the trust preferred securities, for up to five years. Exercise of this deferral right does not constitute a default of our obligations to pay the interest on the Debentures or the corresponding distributions that are payable on the trust preferred securities. We have committed to obtaining approval from the FRB and the CDBO prior to making any distributions representing interest, principal or other sums on subordinated debentures or trust preferred securities. Refer to “ Regulatory Matters ” above in Item 1 for further detail. As of December 31, 2017 , we were current on all interest payments. Under the Federal Reserve Board rulings, the borrowings evidenced by the Debentures, which are subordinated to all of our other borrowings that are outstanding or which we may obtain in the future, are eligible (subject to certain dollar limitations) to qualify and, at December 31, 2017 and 2016 , $17.0 million of those Debentures qualified as Tier I capital, for regulatory purposes.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Per ASC 850-10-20, a related party is defined under GAAP to include: affiliates, principal owners and their immediate family members, management and their immediate families, other parties with which the entity may deal if one party controls or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests, and other parties that can significantly influence the management or operating policies of the transacting parties or that have an ownership interest in one of the transacting parties and can significantly influence the other to an extent that one or more of the transacting parties might be prevented from fully pursuing its own separate interests. GAAP requires disclosure of all material related party transactions, excluding compensation arrangements, expense allowances, and items eliminated in consolidation. Occasionally, we participate in loans with our affiliates through the ordinary course of business. These loan participations are not considered material transactions. Excluding these loan participations, the equity transactions described in Note 14, Shareholders' Equity, and the transactions noted below, we have no other related party transactions. Deposits maintained by members of the Board of Directors and executive officers at the Bank totaled $272 thousand and $164 thousand at December 31, 2017 and 2016 , respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The components of income tax (benefit) expense from continuing operations consisted of the following for the years ended December 31: (Dollars in thousands) 2017 2016 2015 Current taxes: Federal $ (125 ) $ — $ 5 State 34 (5 ) 4 Total current taxes (91 ) (5 ) 9 Deferred taxes: Federal — 10,044 (8,490 ) State — 6,793 (3,070 ) Total deferred taxes — 16,837 (11,560 ) Total income tax (benefit) expense $ (91 ) $ 16,832 $ (11,551 ) The reasons for the differences between the statutory federal income tax rates and our effective tax rates are summarized in the following table: Year Ended December 31, 2017 2016 2015 Federal income tax based on statutory rate 34.0 % 34.0 % 34.0 % State franchise tax net of federal income tax benefit 7.2 7.2 7.1 Permanent differences (0.4 ) — — Other 1.4 (0.1 ) 3.9 Valuation allowance (43.1 ) (135.6 ) (1,343.5 ) Total effective tax rate (0.9 )% (94.5 )% (1,298.5 )% At December 31, 2017 and December 31, 2016 , we have a net deferred tax asset of $0 and $0 , respectively, as a result of the full valuation allowance recorded against our gross deferred tax asset in each period. Adjustments to our deferred tax valuation allowance could be required in the future if we were to conclude, on the basis of our assessment of the realizability of the deferred tax asset, that the amount of that asset which is more-likely-than-not, to be available to offset or reduce future taxes has increased. Any such increase would result in an income tax benefit. The components of our net deferred tax asset are as follows at: (Dollars in thousands) December 31, 2017 2016 Deferred tax asset: Allowance for loan and lease losses $ 4,207 $ 6,932 Other than temporary impairment on securities 56 78 Deferred compensation 693 1,033 Litigation reserve 131 — Other accrued expenses 927 2,075 Charitable contributions 241 244 Reserve for unfunded commitments 103 144 Tax credits 60 158 Net operating loss carry forward 9,754 13,410 Stock based compensation 363 747 Depreciation and amortization — 166 Unrealized losses on securities and deferred compensation 338 758 Total deferred tax assets 16,873 25,745 Deferred tax liabilities: Depreciation and amortization (133 ) — Other (803 ) (741 ) Total deferred tax liabilities (936 ) (741 ) Valuation allowance (15,937 ) (25,004 ) Total net deferred tax asset $ — $ — During the year ended December 31, 2015 , we recorded an income tax benefit of $11.6 million . Management evaluated the positive and negative evidence and determined that there was enough positive evidence to support the full realization of the deferred tax asset and that no valuation allowance was needed. Positive evidence included projected taxable income utilizing objective assumptions based on 2015 actual results, tax planning strategies, improvement in economic conditions and at least 17 years remaining on the life of our $8.3 million deferred tax asset generated from our net operating loss carryforward. Additionally, the Company had generated positive core earnings for the trailing six quarters which demonstrated the ability to be profitable in what is considered to be the Company's core business. While the decision to exit the mortgage business in 2013 did not necessarily ensure that the Company would become profitable, the results provided positive evidence that the decision to exit the unprofitable business was sufficient to overcome the losses incurred in recent years. Negative evidence we considered in making this determination included our three -year cumulative loss deficit and our accumulated deficit. Management determined that the expectation of future taxable income supported by our recent history of positive core earnings after adjusting for aberrational items that caused our cumulative loss condition, including discontinued operations, provided enough positive evidence to outweigh the negative evidence. Therefore, we concluded that it was more-likely-than-not that the existing $17.6 million net deferred tax asset would be realized, resulting in the reversal of the entire valuation allowance against the Company's deferred tax asset. Although we did not expect to be required to pay income tax to the appropriate taxing authorities of any sizeable amount until we had depleted our net operating loss carryforwards, we expected to recognize income tax expense in our financial statements beginning in 2016 at a combined rate of approximately 41% on our pretax income. During the year ended December 31, 2016 , we had income tax expense of $16.8 million as a result of the establishment of a full valuation allowance during 2016 on the balance of our deferred tax asset, which includes current and historical losses that may be used to offset taxes on future profits. Accounting rules specify that management must evaluate the deferred tax asset on a recurring basis to determine whether enough positive evidence exists to determine whether it is more-likely-than-not that the deferred tax asset will be available to offset or reduce future taxes. Negative evidence included the significant losses incurred during the second and third quarters of 2016, an increase in our nonperforming assets from December 31, 2015, and our accumulated deficit. Positive evidence included our forecast of our taxable income, the time period in which we have to utilize our deferred tax asset and the current economic conditions. The tax code allows net operating losses to be carried forward for 20 years from the date of the loss, and while management believed that the Company would be able to realize the deferred tax asset within that period, we were unable to assert the timing as to when that realization would occur. As a result of this conclusion and due to the hierarchy of evidence that the accounting rules specify, a valuation allowance had been recorded as of December 31, 2016 to offset the deferred tax asset. During the year ended December 31, 2017 , we had an income tax benefit of $91 thousand . The income tax benefit for the year ended December 31, 2017 represents the reclassification of the alternative minimum tax credit carryforward from a deferred tax asset to an income tax receivable as required by the Tax Cuts and Jobs Act signed into law on December 22, 2017. This was partially offset by the payment to the State of California for the cost of doing business within the state. No additional income tax expense was recorded as a result of our full valuation allowance, discussed further below. The year ended December 31, 2017 results reflect the estimated impact of the enactment of the new tax law, which resulted in a minimal increase in net income due to the elimination of the corporate alternative minimum tax. Additionally, as part of the newly enacted tax law, the decrease in our deferred tax asset and corresponding valuation allowance as of December 31, 2017 is primarily attributable to the Federal corporate tax rate decreasing from 35% to 21%, which caused us to decrease our gross deferred tax asset and the related valuation allowance to $15.9 million from $21.7 million as of September 30, 2017. Accounting rules specify that management must evaluate the deferred tax asset on a recurring basis to determine whether enough positive evidence exists to determine whether it is more-likely-than-not that the deferred tax asset will be available to offset or reduce future taxes. The tax code allows net operating losses to be carried forward for 20 years from the date of the loss, and while management believes that the Company will be able to realize the deferred tax asset within the period that our net operating losses may be carried forward, we are unable to assert the timing as to when that realization will occur. Due to the hierarchy of evidence that the accounting rules specify, management determined that a full valuation allowance that was previously established on the balance of our deferred tax asset was still required at December 31, 2017 . As of December 31, 2017 , we had net operating loss carryforwards of $30.6 million and $56.0 million for federal and state tax purposes, respectively, which are available to offset future taxable income. If not used, these carryforwards begin expiring in 2032 and would fully expire in 2036. Refer to the table below for the amount and expiration of our net operating loss carryforwards: Federal State Expiration (amounts in thousands) 2008 (1) $ — $ 4,608 12/31/2032 2009 (1) — 21,324 12/31/2032 2010 (1) — 5,258 12/31/2032 2012 852 774 12/31/2032 2013 14,977 8,967 12/31/2033 2015 288 571 12/31/2035 2016 14,436 14,453 12/31/2036 $ 30,553 $ 55,955 (1) California net operating loss carryforwards were suspended by the Franchise Tax Board during these periods and the carryover was extended. We file income tax returns with the U.S. federal government and the State of California. As of December 31, 2017, we were subject to examination by the Internal Revenue Service with respect to our U.S. federal tax returns for the 2014 to 2016 tax years and the Franchise Tax Board for California state income tax returns for the 2013 to 2016 tax years. Net operating losses on our U.S. federal and California state income tax returns may be carried forward up to 20 years. As of December 31, 2017, we do not have any unrecognized tax benefits. Our policy is to recognize interest and penalties accrued on any unrecognized tax benefits as a component of tax expense. We did not have any accrued interest or penalties associated with any unrecognized tax benefits, and no interest expense was recognized during the years ended December 31, 2017 , 2016 and 2015.

Stock-Based Employee Compensati

Stock-Based Employee Compensation Plans	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Employee Compensation Plans	Stock-Based Employee Compensation Plans In May 2010, our shareholders approved the adoption of our 2010 Equity Incentive Plan (the “2010 Incentive Plan”), which authorized and set aside a total of 400,000 shares of our common stock for issuance on the exercise of stock options or the grant of restricted stock or other equity incentives to our officers, and other key employees and directors. An additional 158,211 shares of common stock were also set aside which was equal to the total of the shares that were available for the grant of equity incentives under our shareholder-approved 2008 and 2004 Equity Incentive Plans (the "Previously Approved Plans") at the time of the adoption of the 2010 Incentive Plan. Options to purchase a total of 141,550 shares of our common stock granted under the Previously Approved Plans were outstanding at December 31, 2017 . The 2010 Incentive Plan provides that if any of these outstanding options under the Previously Approved Plans expire or are terminated for any reason, then the number of shares that would become available for grants or awards of equity incentives under the 2010 Incentive Plan would be increased by an equivalent number of shares. At the Annual Shareholders meeting held in May 2013, our shareholders approved an additional 800,000 share increase in the maximum number of shares of our common stock that may be issued pursuant to grants or exercises of options or restricted shares or other equity incentives under the 2010 Incentive Plan, of which 69,667 shares of restricted stock vested during the year ended December 31, 2017 , thereby decreasing the maximum number of shares authorized under the 2010 Incentive Plan. As a result, as of December 31, 2017 , the maximum number of shares that were authorized for the grant of options or other equity incentives under the 2010 Incentive Plan totaled 1,255,568 (assuming that all 141,550 shares of our common stock subject to options under the Previously Approved Plans expire or are terminated), or approximately 5% of the shares of our common stock then outstanding. A stock option entitles the recipient to purchase shares of our common stock at a price per share that may not be less than 100% of the fair market value of the Company’s shares on the date the option is granted. Restricted shares may be granted at such purchase prices and on such other terms, including restrictions and Company repurchase or reacquisition rights, as are fixed by the Compensation Committee at the time rights to purchase such restricted shares are granted. Stock Appreciation Rights ("SARs") entitle the recipient to receive a cash payment in an amount equal to the difference between the fair market value of the Company’s shares on the date of vesting and a “base price” (which, in most cases, will be equal to the fair market value of the Company’s shares on the date the SAR is granted), subject to the right of the Company to make such payment in shares of its common stock at their then fair market value. Options, restricted shares and SARs may vest immediately or in installments over various periods generally ranging up to five years , subject to the recipient’s continued employment or service or the achievement of specified performance goals, as determined by the Compensation Committee at the time it grants or awards the options, the restricted shares or the SARs. Stock options and SARs may be granted for terms of up to 10 years after the date of grant, but will terminate sooner upon or shortly after a termination of service occurring prior to the expiration of the term of the option or SAR. The Company will become entitled to repurchase any unvested restricted shares, at the same price that was paid for the shares by the recipient, or to cancel those shares in the event of a termination of employment or service of the holder of such shares or if any performance goals specified in the award are not satisfied. To date, the Company has not granted any SARs. Under FASB ASC 718-10, we are required to recognize, in our financial statements, the fair value of the options or any restricted shares that we grant as compensation cost over their respective service periods. The fair values of the options that were outstanding at December 31, 2017 under the 2010 Incentive Plan were estimated as of their respective dates of grant using the Black-Scholes option-pricing model. The Company, under the 2010 Incentive Plan, granted restricted stock for the benefit of its employees. These restricted shares vest over a period of three years . The recipients of restricted shares have the right to vote all shares subject to such grant and receive all dividends with respect to such shares whether or not the shares have vested. The recipients do not pay any cash consideration for the shares. Stock Options The table below summarizes the weighted average assumptions used to determine the fair values of the options granted during the following periods: Year Ended December 31, Assumptions with respect to: 2017 2016 2015 Expected volatility 33 % 38 % 44 % Risk-free interest rate 1.98 % 1.70 % 1.82 % Expected dividends — % — % — % Expected term (years) 5.7 6.3 6.0 Weighted average fair value of options granted during period $ 2.84 $ 2.78 $ 2.81 The following table summarizes the stock option activity under the Company’s equity incentive plans during the years ended December 31, 2017 , 2016 and 2015 , respectively. Number of Shares Weighted- Average Exercise Price Per Share Number of Shares Weighted- Average Exercise Price Per Share Number of Shares Weighted- Average Exercise Price Per Share 2017 2016 2015 Outstanding – January 1, 1,066,914 $ 6.35 838,696 $ 6.20 1,257,390 $ 6.51 Granted 3,700 8.21 402,051 6.89 112,828 7.09 Exercised (205,970 ) 5.89 (97,292 ) 4.66 (296,100 ) 5.15 Forfeited/Canceled (72,067 ) 7.06 (76,541 ) 9.74 (235,422 ) 9.59 Outstanding – December 31, 792,577 6.41 1,066,914 6.35 838,696 6.20 Options Exercisable – December 31, 537,229 6.17 604,970 5.95 622,770 6.06 Options Vested – December 31, 537,229 $ 6.17 604,970 $ 5.95 622,770 $ 6.06 Options to purchase 205,970 , 97,292 , and 296,100 shares of our common stock were exercised during the years ended December 31, 2017 , 2016 and 2015 , respectively. The aggregate intrinsic value of options exercised during the year s ended December 31, 2017 , 2016 and 2015 , was $405 thousand , $249 thousand and $556 thousand , respectively. The fair values of options vested during the years ended December 31, 2017 , 2016 and 2015 were $401 thousand , $311 thousand and $655 thousand , respectively. The following table provides additional information regarding the vested and unvested options that were outstanding at December 31, 2017 . Options Outstanding as of December 31, 2017 Options Exercisable (1) Vested Unvested Weighted Average Exercise Price Weighted Average Remaining Contractual Life (Years) Shares Weighted Average Exercise Price $2.97 – $3.99 51,003 — $ 3.50 2.76 51,003 $ 3.50 $4.00 – $4.99 16,000 — 4.34 3.30 16,000 4.34 $5.00– $5.99 30,000 — 5.30 5.46 30,000 5.30 $6.00– $6.99 366,385 159,102 6.60 6.50 366,385 6.51 $7.00-$8.06 73,841 96,246 7.11 7.78 73,841 7.08 537,229 255,348 $ 6.41 6.43 537,229 $ 6.17 (1) The weighted average remaining contractual life of the options that were exercisable as of December 31, 2017 was 5.68 years. The aggregate intrinsic values of options that were outstanding and exercisable under the 2010 Incentive Plan at December 31, 2017 and 2016 was $1.4 million and $837 thousand , respectively. A summary of the status of the unvested options outstanding as of December 31, 2017 , 2016 and 2015 , and changes in the weighted average grant date fair values of the unvested options during the years ended December 31, 2017 , 2016 and 2015 , are set forth in the following table. For the year ended 2017 2016 2015 Number of Shares Subject to Options Weighted Average Grant Date Fair Value Number of Weighted Number of Weighted Unvested at the beginning of the year 461,944 $ 2.79 215,926 $ 2.93 468,504 $ 2.68 Granted 3,700 2.84 402,051 2.75 112,828 3.13 Vested (141,829 ) 2.83 (108,820 ) 2.86 (248,406 ) 2.63 Forfeited/Canceled (68,467 ) 2.68 (47,213 ) 2.88 (117,000 ) 2.78 Unvested at the end of the year 255,348 $ 2.80 461,944 $ 2.79 215,926 $ 2.93 At December 31, 2017 , the weighted average period over which nonvested awards were expected to be recognized was 1.61 years. Restricted Stock We issued 40,907 shares of restricted stock under the 2010 Incentive Plan during the year ended December 31, 2017 , at a price of $8.02 that vest on an annual prorated basis over the next three years. The following table summarizes the activity related to restricted stock granted, vested and forfeited under our equity incentive plans during the years ended December 31, 2017 , 2016 and 2015. For the year ended 2017 2016 2015 Number of Shares Average Grant Date Fair Value Number of Shares Average Grant Date Fair Value Number of Shares Average Grant Date Fair Value Outstanding at the beginning of the year 151,298 $ 6.84 129,283 $ 6.75 141,254 $ 6.29 Granted 40,907 8.02 121,775 6.79 98,829 7.11 Vested (69,667 ) 6.80 (67,456 ) 6.68 (80,709 ) 6.48 Forfeited (19,030 ) 6.82 (32,304 ) 6.64 (30,091 ) 6.44 Outstanding at the end of the year 103,508 $ 7.33 151,298 $ 6.84 129,283 $ 6.75 Compensation Expense We expect that the compensation expense that will be recognized during the periods presented below in respect of stock options and restricted stock outstanding at December 31, 2017 , will be as follows: Estimated Stock Based Compensation Expense Stock Options Estimated Stock Based Compensation Expense Restricted Stock Estimated Stock Based Compensation Expense Total (Dollars in thousands) For the years ending December 31, 2018 $ 313 $ 211 $ 524 2019 65 73 138 2020 22 48 70 2021 11 39 50 2022 and beyond 1 20 21 $ 412 $ 391 $ 803 The aggregate amounts of stock based compensation expense recognized in our consolidated statements of operations for the years ended December 31, 2017 , 2016 and 2015 were $796 thousand , $1.0 million and $1.2 million , respectively, in each case net of taxes.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2017
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans The Company has a 401(k) plan that covers substantially all full-time employees. That plan permits voluntary contributions by employees, a portion of which are sometimes matched by the Company. The Company’s expenses relating to its contributions to the 401(k) plan for the years ended December 31, 2017 , 2016 and 2015 were $248 thousand , $342 thousand , and $164 thousand , respectively. In January 2001, the Company established an unfunded Supplemental Retirement Plan (“SERP”) for our former CEO, Raymond E. Dellerba, who retired from that position in April 2013. The SERP was amended and restated in April 2006 to comply with the requirements of new Section 409A of Internal Revenue Code. The SERP provides that, subject to meeting certain vesting requirements described below, upon reaching age 65 , Mr. Dellerba will become entitled to receive 180 equal successive monthly retirement payments, each in an amount equal to 60% of his average monthly base salary during the three years immediately preceding his reaching 65 years old (the “Monthly SERP Benefit”). Mr. Dellerba reached the age of 65 in January 2013 and, as a result, a monthly benefit payment under the SERP to Mr. Dellerba commenced on February 1, 2013. The Company follows FASB ASC 715-30-35, which requires us to recognize in our balance sheet the funded status of any post-retirement plans that we maintain and to recognize, in other comprehensive income, changes in funded status of any such plans in any year in which changes occur. The changes in the projected benefit obligations under the SERP during 2017 , 2016 and 2015 , its funded status at December 31, 2017 , 2016 and 2015 , and the amounts recognized in our consolidated statements of financial condition at each of those dates were as follows: At December 31, (Dollars in thousands) 2017 2016 2015 Change in benefit obligation: Benefit obligation at beginning of period $ 2,511 $ 2,667 $ 2,815 Service cost — — — Interest cost 141 150 159 Actuarial loss/(gain) — — — (Benefits paid) (307 ) (306 ) (307 ) Benefit obligation at end of period $ 2,345 $ 2,511 $ 2,667 Funded status: Amounts recognized in the Statement of Financial Condition Unfunded accrued SERP liability—current $ (299 ) $ (299 ) $ (299 ) Unfunded accrued SERP liability—noncurrent (2,046 ) (2,212 ) (2,368 ) Total unfunded accrued SERP liability $ (2,345 ) $ (2,511 ) $ (2,667 ) Net amount recognized in accumulated other comprehensive income Prior service cost/(benefit) $ — $ — $ — Net actuarial loss/(gain) — — — Total net amount recognized in accumulated other comprehensive income $ — $ — $ — Accumulated benefit obligation $ 2,345 $ 2,511 $ 2,667 Components of net periodic SERP cost year to date: Service cost $ — $ — $ — Interest cost 141 150 159 Amortization of prior service cost/(benefit) — — — Amortization of net actuarial loss/(gain) — — — Net periodic SERP cost $ 141 $ 150 $ 159 As of December 31, 2017 , $1.5 million benefits are expected to be paid in the next five years and a total of $1.5 million of benefits are expected to be paid from year 2022 through year 2026. In 2018 , $130,802 is expected to be recognized in net periodic benefit cost.

Earnings Per Share ("EPS")

Earnings Per Share ("EPS")	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share ("EPS")	Earnings Per Share (“EPS”) Basic EPS excludes dilution and is computed by dividing net income or loss available to common shareholders by the weighted average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if stock options were exercised or converted into common stock that would then share in our earnings. The following table shows how we computed basic and diluted EPS for the years ended December 31, 2017 , 2016 and 2015 . (In thousands, except per share data) For the Year Ended December 31, 2017 2016 2015 Numerator: Net income (loss) from continuing operations $ 10,449 $ (34,643 ) $ 12,441 Dividends on preferred stock — — (927 ) Inducements for exchange of the preferred stock — — (512 ) Numerator for basic and diluted net income (loss) available to common shareholders $ 10,449 $ (34,643 ) $ 11,002 Denominator: Basic weighted average outstanding shares of common stock 23,180 22,959 20,517 Dilutive effect of employee stock options 132 — 159 Diluted weighted average common stock and common stock equivalents 23,312 22,959 20,675 Basic income (loss) common share (1) : Net income (loss) available to common shareholders $ 0.45 $ (1.51 ) $ 0.54 Diluted income (loss) per common share (1) : Net income (loss) available to common shareholders $ 0.45 $ (1.51 ) $ 0.53 (1) The basic and diluted earnings per share amounts for the years ended December 31, 2017 and 2015 are the same under both the Treasury Stock Method and the Two-Class Method as prescribed in FASB ASC 260-10, Earnings Per Share . The Two-Class Method is not required for the year ended December 31, 2016. The weighted average shares that have an antidilutive effect in the calculation of diluted net income (loss) per share and have been excluded from the computations above were as follows: For the Year Ended December 31, 2017 2016 2015 Stock options (1)(2) 200,824 1,038,317 360,600 (1) Stock options were excluded from the computation of diluted earnings per common share for the year ended December 31, 2016 as we reported a net loss from continuing operations. (2) Stock options were excluded from the computation of diluted earnings per common share for the years ended December 31, 2017 and 2015 because the options were either “out-of-the-money” or the effect of exercise would have been antidilutive.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity Preferred Stock and Warrants On August 28, 2015, we entered into an Exchange Agreement (the “Exchange Agreement”) with SBAV, LP, an affiliate of Clinton Group, Inc. (“SBAV”), and the Carpenter Funds pursuant to which SBAV and the Carpenter Funds exchanged an aggregate of 112,000 shares of the Company’s Series B Convertible 8.4% Noncumulative Preferred Stock (the “Series B Shares”), 35,225 shares of the Series C 8.4% Noncumulative Preferred Stock (the “Series C Shares”) and warrants to purchase 761,278 shares of the Company’s common stock (the “Warrants”) for an aggregate of 3,009,148 shares of the Company’s common stock (the “Exchange Transaction”). The Series B Shares, Series C Shares and Warrants exchanged by SBAV and the Carpenter Funds in the Exchange Transaction comprised all of the Company’s outstanding shares of preferred stock and warrants to purchase shares of the Company’s common stock. The Exchange Transaction closed on September 30, 2015. Due to the ownership interests of SBAV and the Carpenter Funds at September 30, 2015, this transaction is considered to be a related party transaction. Accumulated Other Comprehensive Income, net Accumulated other comprehensive income, net as of December 31, 2017 , 2016 and 2015 was as follows: Unrealized Gain (Loss) on Securities Available-for-Sale, net of tax Accumulated Other Comprehensive Income, Net (Dollars in thousands) Beginning balance as of January 1, 2015 $ (692 ) $ (692 ) Other comprehensive income before reclassifications, net of tax provision of $81 thousand (1) (118 ) (118 ) Amounts reclassified from accumulated other comprehensive income, net of tax — — Other comprehensive income, net of tax provision of $81 thousand (118 ) (118 ) Ending balance as of December 31, 2015 $ (810 ) $ (810 ) Other comprehensive income before reclassifications, net of tax provision of $739 thousand (1) (1,032 ) (1,032 ) Amounts reclassified from accumulated other comprehensive income, net of tax — — Other comprehensive income, net of tax provision of $739 thousand (1,032 ) (1,032 ) Ending balance as of December 31, 2016 $ (1,842 ) $ (1,842 ) Other comprehensive income before reclassifications (2) 695 695 Amounts reclassified from accumulated other comprehensive income, net of tax (3) 4 4 Other comprehensive income (2) 699 699 Ending balance as of December 31, 2017 $ (1,143 ) $ (1,143 ) (1) Tax impact included in Deferred tax assets . (2) No tax impact as a result of the full valuation allowance recorded against our deferred tax asset at December 31, 2017. (3) Relates to the realized loss on our securities available for sale. The realized loss is included within Net loss on sale of securities available for sale . Dividends Payment of Cash Dividends by the Company . California laws place restrictions on the ability of California corporations to pay cash dividends on preferred or common stock. Subject to certain limited exceptions, a California corporation may pay cash dividends only to the extent of (i) the amount of its retained earnings or (ii) the amount by which the fair value of the corporation’s assets exceeds its liabilities. The Company's ability to pay dividends is also limited by the ability of the Bank to pay cash dividends to the Company. See “ —Payment of Dividends by the Bank to the Compan y” below. During the years ended December 31, 2017 , 2016 and 2015 , we issued 0 , 0 , and 5,917 Series C Shares, respectively, in lieu of accumulated declared and undeclared dividends on the Series B Shares. As of December 31, 2017 , 2016 , and 2015 , we had no outstanding Series C Shares or Series B Shares as a result of the Exchange Transaction noted above in “Preferred Stock and Warrants.” Payment of Dividends by the Bank to the Company . Generally, the principal source of cash available to a bank holding company consists of cash dividends from its bank subsidiaries. Under California law, the Board of Directors of the Bank may declare and pay cash dividends to the Company, which is its sole shareholder, subject to the restriction that the amount available for the payment of cash dividends may not exceed the lesser of (i) the Bank’s retained earnings or (ii) its net income for its last three fiscal years (less the amount of any dividends paid during such period). Cash dividends by the Bank to the Company in excess of that amount may be made only with the prior approval of the California Commissioner of Financial Institutions (“Commissioner”). If the Commissioner finds that the shareholders’ equity of the Bank is not adequate, or that the payment by the Bank of cash dividends to the Company would be unsafe or unsound for the Bank, the Commissioner can order the Bank not to pay such dividends. The ability of the Bank to pay dividends is further restricted under the Federal Deposit Insurance Corporation Improvement Act of 1991, which prohibits an FDIC-insured bank from paying dividends if, after making such payment, the bank would fail to meet any of its minimum capital requirements. Under the Financial Institutions Supervisory Act and Federal Financial Institutions Reform, Recovery and Enforcement Act of 1989, federal banking regulators also have authority to prohibit FDIC-insured financial institutions from engaging in business practices which are considered to be unsafe or unsound. Under the authority of these acts, federal bank regulatory agencies, as part of their supervisory powers, generally require FDIC insured banks to adopt dividend policies which limit the payment of cash dividends. We have agreed that the Bank will not, without the FRB and the CDBO's prior written approval, pay any dividends to Bancorp. Refer to “ Regulatory Matters ” above in Item 1 for further detail. As a result, it is not expected that the Bank will be permitted to pay cash dividends for the foreseeable future. While restrictions on the payment of dividends from the Bank to us exist, there are no restrictions on the dividends that PMAR may pay to the Company. PMAR has approximately $1.8 million in assets and could provide the Company with additional cash if required. We have committed to obtaining approval from the FRB and the CDBO prior to the Company paying any dividends. Refer to “ Regulatory Matters ” above in Item 1 for further detail.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Leases We lease certain facilities and equipment under various non-cancelable operating leases, which generally include 2% to 6% escalation clauses in the lease agreements. Rent expense for the years ended December 31, 2017 , 2016 and 2015 was $2.4 million , $2.6 million , and $2.8 million , respectively. Future minimum non-cancelable lease commitments were as follows at December 31, 2017 : (Dollars in thousands) 2018 $ 2,125 2019 2,195 2020 1,105 2021 315 2022 and beyond 655 Total $ 6,395 Contingent Liabilities Repurchase Reserves We have historically maintained reserves for possible repurchases that we may have been required to make of certain of the mortgage loans which we sold as a result of deficiencies or defects that may be found to exist in such loans. Our repurchase reserve also covered returns of any premiums earned and administrative fees pertaining to the repurchase of mortgage loans that did not meet investor guidelines, including potential loss of advances on Veterans Affairs or Federal Housing Authority Ginnie Mae loans. As a result of our exit from the mortgage banking business and no longer being subject to potential loss for anything other than mortgage fraud, we have undertaken an analysis of our accrual. Our original analysis assumed that the repurchase liability exposure would decrease over time as mortgage loans were paid off and as we were no longer originating new mortgage loans. During the year ended December 31, 2017 , management's analysis determined that there was no risk that we would be required to repurchase loans sold at a loss. Therefore, management made the determination to reverse the remaining reserve of $254 thousand during the year. No loans were repurchased during the years ended December 31, 2017 and 2016 . We repurchased $619 thousand of loans during the year ended December 31, 2015 . The following table sets forth information, at December 31, 2017 and 2016 , with respect to our reserves: 2017 2016 Beginning balance $ 254 $ 314 Provision for repurchases (254 ) (60 ) Settlements — — Total repurchases reserve $ — $ 254 Commitments To meet the financing needs of our customers in the normal course of business, we are a party to financial instruments with off-balance sheet risk. These financial instruments include commitments to extend credit and standby letters of credit. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated financial statements. At December 31, 2017 and 2016 , we were committed to fund certain loans including letters of credit amounting to approximately $295 million and $317 million , respectively. The contractual amounts of a credit-related financial instrument, such as a commitment to extend credit, a credit-card arrangement or a letter of credit, represents the amount of potential accounting loss should the commitment be fully drawn upon, the customer were to default, and the value of any existing collateral securing the customer’s payment obligation becomes worthless. The loss reserve for unfunded loan commitments was $350 thousand and $350 thousand at December 31, 2017 and 2016 , respectively. As a result, we use the same credit policies in making commitments to extend credit and conditional obligations as we do for on-balance sheet instruments. Commitments generally have fixed expiration dates; however, since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. We evaluate each customer’s creditworthiness on a case-by-case basis, using the same credit underwriting standards that are employed in making commercial loans. The amount of collateral obtained, if any, upon an extension of credit is based on our evaluation of the creditworthiness of the customer. Collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, residential real estate and income-producing commercial properties. We are required to purchase stock in the FRBSF in an amount equal to 6% of our capital, one-half of which must be paid currently with the balance due upon request. The Bank is a member of the FHLB and therefore, is required to purchase FHLB stock in an amount equal to the lesser of 1% of the Bank’s real estate loans that are secured by residential properties, or 5% of total advances. Litigation, Claims and Assessments We are a defendant in or a party to a number of legal actions or proceedings that arise in the ordinary course of business. In some of these actions and proceedings, claims for monetary damages are asserted against us. In accordance with applicable accounting guidance, we establish an accrued liability for lawsuits or other legal proceedings when they present loss contingencies that are both probable and estimable. We estimate any potential loss based upon currently available information and significant judgments and a variety of assumptions, and known and unknown uncertainties. Moreover, the facts and circumstances on which such estimates are based will change over time. Therefore, the amount of any losses we might incur in any lawsuits or other legal proceedings may exceed amounts which we had accrued based on our estimates and those estimates do not represent the maximum loss exposure that we may have in connection with any lawsuits or other legal proceedings. Based on our evaluation of the remaining lawsuits and other proceedings that were pending against us as of December 31, 2017 , the outcomes in those suits or other proceedings are not expected to have, either individually or in the aggregate, a material adverse effect on our consolidated financial position, results of operations or cash flows. However, in light of the inherent uncertainties involved, some of which are beyond our control, and the very large or indeterminate damages often sought in such legal actions or proceedings, an adverse outcome in one or more of these suits or proceedings could be material to our results of operations or cash flows for any particular reporting period.

Capital_Operating Plans

Capital/Operating Plans	12 Months Ended
	Dec. 31, 2017
Regulatory Capital Requirements [Abstract]
Capital/Operating Plans	Capital/Operating Plans The Company and the Bank are subject to various regulatory capital requirements administered by the federal and state banking agencies. A failure to meet minimum capital requirements is likely to lead to the imposition by federal and state regulators of (i) certain requirements, such as an order requiring additional capital to be raised, and (ii) operational restrictions that could have a direct and material adverse effect on operating results. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classifications are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Company and Bank to maintain minimum amounts and ratios (set forth in the following table) of total capital, common equity Tier 1 capital and Tier I capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier I capital (as defined) to average assets (as defined). We believe that, as of December 31, 2017 , the Company and the Bank met all capital adequacy requirements to which they are subject and have not been notified by any regulatory agency that would require the Company or the Bank to maintain additional capital. The actual capital amounts and ratios of the Company and the Bank at December 31, 2017 and December 31, 2016 are presented in the following tables: Applicable Federal Regulatory Requirement At December 31, 2017 Actual Capital For Capital Adequacy Purposes To be Categorized As Well Capitalized Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Total Capital to Risk Weighted Assets: Company $ 147,551 12.2 % $ 102,594 At least 8.625 N/A N/A Bank 137,581 11.6 % 102,386 At least 8.625 $ 118,709 At least 10.0 Common Equity Tier 1 Capital to Risk Weighted Assets: Company 116,005 9.6 % 60,962 At least 5.125 N/A N/A Bank 123,035 10.4 % 60,838 At least 5.125 77,161 At least 6.5 Tier 1 Capital to Risk Weighted Assets: Company $ 133,005 11.0 % $ 78,804 At least 6.625 N/A N/A Bank 123,035 10.4 % 78,645 At least 6.625 $ 94,967 At least 8.0 Tier 1 Capital to Average Assets: Company $ 133,005 10.5 % $ 49,889 At least 4.0 N/A N/A Bank 123,035 9.9 % 49,801 At least 4.0 $ 62,251 At least 5.0 Applicable Federal Regulatory Requirement At December 31, 2016 Actual Capital For Capital Adequacy Purposes To be Categorized As Well Capitalized Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Total Capital to Risk Weighted Assets: Company $ 131,043 12.8 % $ 88,230 At least 8.625 N/A N/A Bank 114,412 11.4 % 86,566 At least 8.625 $ 100,366 At least 10.0 Common Equity Tier 1 Capital to Risk Weighted Assets: Company 101,199 9.9 % 52,427 At least 5.125 N/A N/A Bank 101,807 10.1 % 51,438 At least 5.125 65,238 At least 6.5 Tier 1 Capital to Risk Weighted Assets: Company $ 118,199 11.6 % $ 67,771 At least 6.625 N/A N/A Bank 101,807 10.1 % 66,492 At least 6.625 $ 80,293 At least 8.0 Tier 1 Capital to Average Assets: Company $ 118,199 10.5 % $ 44,923 At least 4.0 N/A N/A Bank 101,807 9.2 % 44,360 At least 4.0 $ 55,450 At least 5.0 As the above tables indicate, at December 31, 2017 and 2016 , the Bank (on a stand-alone basis) qualified as a “well—capitalized” institution, and the capital ratios of the Company (on a consolidated basis) exceeded the capital ratios mandated for bank holding companies, under federally mandated capital standards and federally established prompt corrective action regulations. Since December 31, 2017 , there have been no events or circumstances known to us which have changed or which are expected to result in a change in the Company’s or the Bank’s classification as well-capitalized institutions. In early July 2013, the Federal Reserve Board and the FDIC issued final rules implementing the Basel III regulatory capital framework and related Dodd-Frank Wall Street Reform and Consumer Protection Act changes. The rules revise minimum capital requirements and adjust prompt corrective action thresholds. The final rules revise the regulatory capital elements, add a new common equity Tier 1 capital ratio, increase the minimum Tier 1 capital ratio requirement, and implement a new capital conservation buffer. The rules also permit certain banking organizations to retain, through a one-time election, the existing treatment for accumulated other comprehensive income. The final rules took effect for community banks on January 1, 2015, subject to a transition period for certain parts of the rules. At December 31, 2017 , the Bank (on a stand-alone basis) continued to qualify as a well-capitalized institution, and the Company continued to exceed the minimum required capital ratios applicable to it, under the capital adequacy guidelines described above.

Parent Company Only Information

Parent Company Only Information	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Parent Company Only Information	Parent Company Only Information Condensed Statements of Financial Condition December 31, (Dollars in thousands) 2017 2016 Assets: Due from banks and interest-bearing deposits with financial institutions $ 13,916 $ 8,621 Investment in subsidiaries 124,550 108,088 Other assets 55 630 Total assets $ 138,521 $ 117,339 Liabilities and shareholders’ equity: Liabilities $ 76 $ 93 Junior subordinated debentures 17,527 17,527 Shareholders’ equity 120,918 99,719 Total liabilities and shareholders’ equity $ 138,521 $ 117,339 Condensed Statements of Operations Year Ended December 31, (Dollars in thousands) 2017 2016 2015 Interest income $ 3 $ 2 $ 9 Interest expense (670 ) (582 ) (507 ) Other income 24 17 28 Other expenses (1,045 ) (1,012 ) (984 ) Equity in undistributed earnings (loss) of subsidiaries 12,195 (33,075 ) 13,895 Income tax (expense) benefit (58 ) 7 — Net income (loss) $ 10,449 $ (34,643 ) $ 12,441 Condensed Statements of Cash Flows Year Ended December 31, (Dollars in thousands) 2017 2016 2015 Cash Flows from Operating Activities: Net income (loss) $ 10,449 $ (34,643 ) $ 12,441 Adjustments to reconcile net income (loss) to net cash used in operating activities: Net decrease (increase) in other assets 47 (19 ) (7 ) Net decrease in deferred taxes — 38 — Stock-based compensation expense 796 1,039 1,233 Undistributed (income) loss of subsidiary (12,195 ) 33,075 (13,895 ) Net increase (decrease) in interest payable 11 (71 ) 81 Net (decrease) increase in other liabilities (26 ) 27 — Net cash used in operating activities (918 ) (554 ) (147 ) Cash Flows from Investing Activities: Net decrease in loans — — — Net cash provided by investing activities — — — Cash Flows from Financing Activities: Payments for exchange of preferred stock for common stock — — (324 ) Common stock options exercised 1,213 455 1,511 Tax effect included in stockholders equity of restricted stock vesting — (16 ) (109 ) Return of capital from subsidiaries 15,000 4,000 — Capital contribution to subsidiaries (10,000 ) (5,000 ) — Net cash provided by (used in) financing activities 6,213 (561 ) 1,078 Net increase (decrease) in cash and cash equivalents 5,295 (1,115 ) 931 Cash and Cash Equivalents, beginning of period 8,621 9,736 8,805 Cash and Cash Equivalents, end of period $ 13,916 $ 8,621 $ 9,736

Business Segment Information

Business Segment Information	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Business Segment Information	Business Segment Information We have one reportable business segment, commercial banking. The commercial banking segment provides small and medium-size businesses, professional firms and individuals with a diversified range of products and services such as various types of deposit accounts, various types of commercial and consumer loans, cash management services, and online banking services. We also have one non-reportable segment, discontinued operations, which is comprised of our mortgage banking business. Our mortgage banking business originated mortgage loans that, for the most part, were resold within 30 days to long-term investors in the secondary residential mortgage market. Since our operating segment derives all of its revenues from interest and noninterest income and interest expense constitutes its most significant expense, this segment is reported below using net interest income (interest income less interest expense) and noninterest income (primarily net gains on sales of small business administration loans and fee income). We do not allocate general and administrative expenses or income taxes to our operating segment. The following table sets forth information regarding the net interest income and noninterest income for our commercial banking and discontinued operations segments, respectively, for the years ended December 31, 2017 , 2016 and 2015 . (Dollars in thousands) Commercial Other (1) Total Net interest income for the year ended December 31, 2017 $ 42,995 $ 747 $ 43,742 2016 $ 36,044 $ (521 ) $ 35,523 2015 $ 33,932 $ (404 ) $ 33,528 Noninterest income for the year ended December 31, 2017 $ 3,948 $ 426 $ 4,374 2016 $ 3,438 $ (501 ) $ 2,937 2015 $ 2,658 $ 28 $ 2,686 Segment Assets at: December 31, 2017 $ 1,320,454 $ 2,150 $ 1,322,604 December 31, 2016 $ 1,126,890 $ 13,799 $ 1,140,689 (1) Represents net interest income and noninterest income for PMAR and PMBC.

Unaudited Quarterly Information

Unaudited Quarterly Information	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Unaudited Quarterly Information	Unaudited Quarterly Information Unaudited quarterly information for each of the three months in the years ended December 31, 2017 and 2016 was as follows: Three Months Ended December 31, 2017 September 30, 2017 June 30, 2017 March 31, 2017 (in thousands, except per share data) Total interest income $ 13,812 $ 14,025 $ 12,132 $ 11,604 Total interest expense 2,542 2,020 1,736 1,533 Net interest income 11,270 12,005 10,396 10,071 Provision for loan and lease losses — — — — Net interest income after provision for loan and lease losses 11,270 12,005 10,396 10,071 Total noninterest income 1,009 964 1,431 970 Total noninterest expense 10,108 9,176 9,262 9,211 Income before income taxes 2,171 3,793 2,565 1,830 Income tax (benefit) provision (241 ) 37 64 49 Net income allocable to common shareholders $ 2,412 $ 3,756 $ 2,501 $ 1,781 Per share data-basic: Net income allocable to common shareholders $ 0.10 $ 0.16 $ 0.11 $ 0.08 Per share data-diluted: Net income allocable to common shareholders $ 0.10 $ 0.16 $ 0.11 $ 0.08 Three Months Ended December 31, 2016 September 30, 2016 June 30, 2016 March 31, 2016 (in thousands, except per share data) Total interest income $ 10,613 $ 10,598 $ 9,835 $ 9,954 Total interest expense 1,462 1,409 1,355 1,251 Net interest income 9,151 9,189 8,480 8,703 Provision for loan and lease losses — 10,730 8,720 420 Net interest income (loss) after provision for loan and lease losses 9,151 (1,541 ) (240 ) 8,283 Total noninterest income 265 1,054 864 754 Total noninterest expense 9,266 9,687 8,893 8,555 Income (loss) before income taxes 150 (10,174 ) (8,269 ) 482 Income tax (benefit) provision (159 ) 20,352 (3,559 ) 198 Net income (loss) allocable to common shareholders $ 309 $ (30,526 ) $ (4,710 ) $ 284 Per share data-basic: Net income (loss) allocable to common shareholders $ 0.01 $ (1.33 ) $ (0.21 ) $ 0.01 Per share data-diluted: Net income (loss) allocable to common shareholders $ 0.01 $ (1.33 ) $ (0.21 ) $ 0.01

Significant Accounting Polici27

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Basis of Accounting	The accompanying consolidated financial statements have been prepared in accordance with the instructions of the U.S. Securities and Exchange Commission (the “SEC”) to Form 10-K and in accordance with generally accepted accounting principles in effect in the United States (“GAAP”), on a basis consistent with prior periods.
Use of Estimates	Use of Estimates The preparation of the financial statements in conformity with GAAP requires us to make certain estimates and assumptions that could affect the reported amounts of certain of our assets, liabilities, and contingencies at the date of the financial statements and the reported amounts of our revenues and expenses during the reporting periods. Material estimates that are particularly susceptible to changes in the near term relate primarily to our determinations of the allowance for loan and lease losses (“ALLL”), the fair values of securities available for sale, and the determination of reserves pertaining to deferred tax assets. If circumstances or financial trends on which those estimates were based were to change in the future or there were to occur any currently unanticipated events affecting the amounts of those estimates, our future financial position or results of operations could differ, possibly materially, from those expected at the current time.
Principles of Consolidation	Principles of Consolidation Our consolidated financial statements for the years ended December 31, 2017 , 2016 and 2015 include the accounts of PMBC, the Bank and PMAR. All significant intercompany balances and transactions were eliminated in consolidation.
Cash and Cash Equivalents	Cash and Cash Equivalents For purposes of the statements of cash flow, cash and cash equivalents consist of cash and due from banks, interest bearing demand deposits with the FRBSF, federal funds sold and interest-bearing deposits, with original maturities of 90 days or less, with financial institutions. Generally, federal funds are sold for one-day periods.
Federal Home Loan Bank Stock and Federal Reserve Bank Stock	Federal Home Loan Bank Stock and Federal Reserve Bank Stock The Bank, as a member of the Federal Home Loan Bank System, is required to maintain an investment in capital stock of the Federal Home Loan Bank of San Francisco (“FHLB”) in varying amounts based on asset size and on amounts borrowed from the FHLB. Because no ready market exists and there is no quoted market value for this stock, the Bank’s investment in this stock is carried at cost. The Bank also maintains an investment in capital stock of the FRBSF, which is carried at cost because no ready market exists and there is no quoted market value for this stock.
Securities Available for Sale, at Fair Value	Securities Available for Sale, at Fair Value Securities available for sale are those which we intend to hold for an indefinite period of time, but which may be sold in response to changes in liquidity needs, changes in interest rates, changes in prepayment risks and other similar factors. These securities are recorded at fair value, with unrealized gains and losses excluded from earnings and reported as other comprehensive income or loss, net of taxes. Purchased premiums and discounts are recognized as interest income using the interest method over the term of these securities. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. Declines in the fair value of these securities below their cost which are other-than-temporary are reflected in earnings as realized losses. In determining other-than-temporary losses, we consider a number of factors, including: (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, (3) whether the market decline was affected by macroeconomic conditions, and (4) whether we have the intent to sell the security or it is more likely than not that we will be required to sell the security before its anticipated recovery. A high degree of subjectivity and judgment is involved in assessing whether an other-than-temporary decline exists and such assessments are based on information available to us at the time we make such assessments.
Loans and Allowance for Loan and Lease Losses	Loans and Allowance for Loan and Lease Losses Loans that we intend and have the ability to hold for the foreseeable future or until maturity or pay-off are stated at their respective principal amounts outstanding, net of unearned income. Interest is accrued daily as earned, except where reasonable doubt exists as to collectability of the loan. A loan with principal or interest that is 90 days or more past due, based on its contractual payment due dates, is placed on nonaccrual status, in which case accrual of interest is discontinued, except that we may elect to continue the accrual of interest when the estimated net realizable value of collateral securing the loan is expected to be sufficient to enable us to recover both principal and accrued interest and those loans are in the process of collection. Generally, interest payments received on nonaccrual loans are applied to principal. Once all principal has been received by us, any additional interest payments are recognized as interest income on a cash basis. An ALLL is established by means of a provision for loan and lease losses that is charged against income. If we conclude that the collection, in full, of the carrying amount of a loan has become unlikely, the loan, or the portion thereof that is believed to be uncollectible, is charged against the ALLL. We carefully monitor changing economic conditions, the loan portfolio by category, the financial condition of borrowers and the history of the performance of the loan portfolio in determining the adequacy of the ALLL. Additionally, as the volume of loans increases, additional provisions for loan losses may be required to maintain the allowance at levels deemed adequate. Moreover, if economic conditions were to deteriorate, causing the risk of loan losses to increase, it would become necessary to increase the allowance to an even greater extent, which would necessitate additional provisions that would be charged to income. We also evaluate the unfunded portion of loan commitments and establish a loss reserve, included in other liabilities, for such unfunded commitments through a charge against noninterest expense. The loss reserve for unfunded loan commitments was $350,000 at December 31, 2017 and 2016 . The ALLL is based on estimates, and ultimate loan losses may vary from current estimates. These estimates are reviewed periodically and, as adjustments become necessary, they are recorded in earnings in the periods in which they become known.
Impaired Loans	Impaired Loans A loan is generally classified as impaired when, in management’s opinion, the principal or interest will not be collectible in accordance with its contractual terms. We measure and reserve for impairment on a loan-by-loan basis using either the present value of expected future cash flows discounted at the loan’s effective interest rate, or the fair value of the collateral if the loan is collateral dependent. We exclude smaller, homogeneous loans, such as consumer installment loans and lines of credit, from these impairment calculations. Also, loans that experience insignificant payment delays or shortfalls are generally not considered impaired.
Restructured Loans	Restructured Loans We sometimes modify or restructure loans when the borrower is experiencing financial difficulties by making a concession to the borrower in the form of changes in the amortization terms, reductions in the interest rates, the acceptance of interest only payments and, in limited cases, concessions to the outstanding loan balances. These loans are classified as troubled debt restructurings (“TDRs”) and considered impaired loans. TDRs are loans modified for the purpose of alleviating temporary impairments to the borrower’s financial condition or cash flows. A workout plan between us and the borrower is designed to provide a bridge for borrower cash flow shortfalls in the near term. A TDR loan may be returned to accrual status when the loan is brought current, has performed in accordance with the contractual restructured terms for a time frame of at least six months and the ultimate collectability of the total contractual restructured principal and interest in no longer in doubt. These loans, while no longer considered a TDR, are still considered impaired loans.
Loan Origination Fees and Costs	Loan Origination Fees and Costs Loan origination fees and related direct costs for loans held for investment are deferred and amortized to interest income as an adjustment to yield over the respective lives of the loans using the effective interest method, except for loans that are revolving or short-term in nature for which the straight line method is used, which approximates the interest method.
Investment in Unconsolidated Subsidiaries	Investment in Unconsolidated Subsidiaries Investment in unconsolidated subsidiaries is stated at cost.
Other Real Estate Owned	Other Real Estate Owned Other real estate owned (“OREO”) consists of real properties acquired by us through foreclosure or in lieu of foreclosure in satisfaction of loans. OREO is recorded at fair value less estimated selling costs at the time of acquisition or foreclosure. Loan balances in excess of fair value, less selling costs, are charged to the ALLL prior to foreclosure. Any subsequent operating expenses or income, reductions in estimated fair values and gains or losses on disposition of such properties are charged or credited to current operations.
Premises and Equipment	Premises and Equipment Premises and equipment are stated at cost, less accumulated depreciation and amortization which are charged to expense on a straight-line basis over the estimated useful lives of the assets or, in the case of leasehold improvements, over the term of the leases, whichever is shorter. For income tax purposes, accelerated depreciation methods are used. Maintenance and repairs are charged directly to expense as incurred. Improvements to premises and equipment that extend their useful lives are capitalized. When such an asset is disposed of, the applicable costs and accumulated depreciation thereon are removed from the accounts and any resulting gain or loss is included in current operations. Rates of depreciation and amortization are based on the following estimated useful lives: Furniture and equipment Three to seven years Leasehold improvements Lesser of the lease term or estimated useful life
Income Taxes	Income Taxes Deferred income taxes and liabilities are determined using the asset and liability method. Under this method, the net deferred tax asset or liability is determined based on the tax effects of the temporary differences between the book and tax basis of the various balance sheet assets and liabilities and gives current recognition to changes in tax rates and laws. We record as a deferred tax asset on our balance sheet an amount equal to the tax credit and tax loss carryforwards and tax deductions ("tax benefits") that we believe will be available to us to offset or reduce the amount of our income taxes in future periods. Under applicable federal and state income tax laws and regulations, 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 (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 statement 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 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. Uncertain tax positions that meet the more likely than not recognition threshold are measured to determine the amount of benefit to recognize. An uncertain tax position is measured at the largest amount of benefit that management believes has a greater than 50% likelihood of realization upon settlement.
Earnings (Loss) Per Share	Earnings (Loss) Per Share Basic income (loss) per share for any fiscal period is computed by dividing net income (loss) allocable to our common shareholders for such period by the weighted average number of common shares outstanding during that period. Fully diluted income (loss) per share reflects the potential dilution that could have occurred assuming the conversion of any convertible securities into common stock at conversion prices, and the exercise of all outstanding options and warrants to purchase shares of our common stock at exercise prices, that were less than the market price of our shares, thereby increasing the number of shares outstanding during the period, and is determined using the treasury method. Although accumulated undeclared dividends on our preferred stock are not recorded in the accompanying consolidated statement of operations, such dividends are included for purposes of computing earnings (loss) per share available to our common shareholders.
Stock Option Plans	Stock Option Plans We follow Financial Accounting Standards Board (“FASB”) Accounting Standard Codification (“ASC”) 718-10, Share-Based Payment , which requires entities that grant stock options or other equity compensation awards to employees to recognize in their financial statements the fair values of those options or share awards as compensation cost over their requisite service (vesting) periods of those options or share awards. Since stock-based compensation cost that is recognized in the statements of operations is to be determined based on the equity compensation awards that we expect will ultimately vest, that compensation expense is reduced for any forfeitures of unvested options or unvested share awards that typically occur due primarily to terminations of employment of optionees or recipients of such share awards. In accordance with Accounting Standard Update (“ASU”) 2016-09, forfeitures are recognized as they occur instead of applying an estimated forfeiture rate to each grant, which was the previous practice.
Comprehensive Income (Loss)	Comprehensive Income (Loss) Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. However, certain changes in assets and liabilities, such as unrealized gains and losses on securities available for sale, are reported as a separate component of the equity in the accompanying consolidated statement of financial condition, net of income taxes, and such items, along with net income, are components of comprehensive income (loss).
Segment Reporting	Segment Reporting During the years ended December 31, 2017 , 2016 and 2015 , we had one reportable segment, which was our commercial banking division, and one non-reportable segment which was our discontinued operations related to our mortgage banking division. In connection with our exit from the mortgage banking business in 2013, the revenues and expenses of our mortgage banking division have been classified as discontinued operations for all periods presented.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606),” which amended its guidance on revenue recognition to conform with international accounting guidance under the International Accounting Standards Board. The ASU provides a framework for addressing revenue recognition and replaces most existing revenue recognition guidance, as well as requires increased disclosure requirements. In August 2015, the FASB issued ASU 2015-14 to defer the effective date of ASU 2014-09 by one year. Accordingly, this guidance is effective for interim and annual periods beginning after December 15, 2017 with early adoption permitted for interim and annual periods beginning after December 15, 2016. We adopted this guidance on January 1, 2018 using the modified retrospective approach. We do not expect any significant impact on our financial statements as the accounting for interest income on loans and investments, loan service fee income, prepayment fees, and loan origination fees are excluded from the scope of this standard. We expect a minimal impact on our disclosures as a result of expanded disclosure guidance. In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements — Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern,” which defines management's responsibility to evaluate whether there is substantial doubt about an organization's ability to continue as a going concern and clarifies when to provide related footnote disclosure. This guidance is effective for interim and annual periods beginning after December 15, 2016. Early adoption was permitted. We adopted this guidance on January 1, 2017 and it had no effect on our consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, “Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities,” which enhances the reporting model for financial instruments to provide users of financial statements with more useful information. Some of the provisions include: requiring equity investments to be measured at fair value with changes in fair value recognized in net income, simplifying the impairment assessment of equity investments without readily determinable fair values, eliminating the requirement to disclose the method and significant assumptions used to estimate fair value on financial instruments measured at amortized cost on the balance sheet, requiring public business entities to use the exit price notion when measuring the fair value of financial instruments, requiring the reporting organization to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the organization has elected to measure the liability at fair value in accordance with the fair value option, requiring separate presentation of financial assets and liabilities by measurement category and form of financial asset on the balance sheet or notes to the financial statements, and clarifying that the reporting organization should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the organization's other deferred tax assets. This guidance is effective for interim and annual periods beginning after December 15, 2017. Early adoption is not permitted for public companies. We adopted this guidance on January 1, 2018. We do not expect adoption of this guidance to have a material impact on our consolidated financial statements as we only have one available-for-sale equity investment where the change in fair value will be recognized in net income, as compared to the current practice of flowing through other comprehensive income. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842),” which requires lessees to recognize the following for all leases (with the exception of short-term leases) at the commencement date: a lease liability measured on a discounted basis and a right-of-use asset a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged and the accounting for sale and leaseback transactions were simplified. This guidance is effective for interim and annual periods beginning after December 15, 2018. Early adoption is permitted. We will adopt this guidance on January 1, 2019. We expect our statement of financial condition to be grossed up on both the asset and liability side to reflect our lease obligations, and we do not expect adoption of this guidance to have a material impact on our other consolidated financial statements or on our disclosures related to leases. In March 2016, the FASB issued ASU 2016-09, “Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting,” which simplifies how several aspects of share-based payments are accounted for and presented in the financial statements. Under the new guidance, some of the aspects that are simplified include: income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. This guidance is effective for interim and annual periods beginning after December 15, 2016. Early adoption was permitted. We adopted this guidance on January 1, 2017. As of December 31, 2016, we had excess tax benefits of approximately $211 thousand for which a benefit could not be previously recognized. Upon adoption, the balance of the unrecognized excess tax benefits was reversed with the impact recorded to retained earnings including any change to the valuation allowance as a result of the adoption. Due to the full valuation allowance on the deferred tax assets, there was no impact to our consolidated financial statements as a result of this adoption. Upon adoption of this guidance, we elected to recognize forfeitures as they occur instead of applying an estimated forfeiture rate to each grant, which was the previous practice. The recorded impact to our beginning retained earnings was less than $10 thousand and not considered material. On a prospective basis, we expect the new guidance could create quarterly volatility in our noninterest expense as forfeitures occur. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” which requires the measurement of all expected credit losses for financial assets held at the reporting date, based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions will now use forward-looking information to better inform their credit loss estimates. Additionally, the ASU amends the accounting guidance for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. This guidance is effective for interim and annual periods beginning after December 15, 2019. Early adoption is permitted for interim and annual periods beginning after December 15, 2018. We will adopt this guidance on January 1, 2020 and expect that it will have a material impact on the determination of our ALLL. We are unable to estimate the expected impact to the ALLL upon adoption due to various factors, primarily the fine tuning of our qualitative assumptions used within our preliminary model, uncertainty regarding economic conditions and the size and mix of our loan portfolio at the time of adoption, which could impact our historical loss factors. We are currently working with our existing ALLL software provider on further developing the model to perform the ALLL calculations upon adoption and we believe that we currently have in place the internal team capable of handling this implementation. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments,” which provides guidance for classification of specific items on the statement of cash flows. This guidance is effective for interim and annual periods beginning after December 15, 2017. Early adoption is permitted. We adopted this guidance on January 1, 2018 and do not expect it to have a material impact on our statement of cash flows. In January 2017, the FASB issued ASU 2017-03, “Accounting Changes and Error Corrections (Topic 250) and Investments - Equity Method and Joint Ventures (Topic 323): Amendments to SEC Paragraphs Pursuant to Staff Announcements at the September 22, 2016 and November 16, 2016 EITF Meetings,” which incorporates into FASB accounting standards recent SEC guidance requiring expanded disclosure on the effect of implementation in advance of a company's adoption of a new accounting standard, specifically those related to revenue recognition, leases, financial instruments and credit losses. This guidance was effective immediately. We adopted this guidance upon the date of issuance and have increased the disclosure of the effect of recently issued accounting standards on future periods in this Form 10-K. We will continue to provide expanded disclosure and updates on the estimated effect of recently issued accounting guidance through the period of adoption. This guidance only affected the financial statement footnote disclosures and had no impact on the financial statements. In May 2017, the FASB issued ASU 2017-09, “Compensation — Stock Compensation (Topic 718): Scope of Modification Accounting,” which provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting. This guidance is effective for interim and annual periods beginning after December 15, 2017. Early adoption is permitted. We adopted this guidance on January 1, 2018 and do not expect it to have a material impact on our financial statements and disclosures.
Subsequent Events	Subsequent Events Subsequent events are events or transactions that occur after the balance sheet date but before financial statements are issued. The Company recognizes in the financial statements the effects of all subsequent events that provide additional evidence about conditions that existed at the date of the balance sheet, including the estimates inherent in the process of preparing the financial statements. The Company’s financial statements do not recognize subsequent events that provide evidence about conditions that did not exist at the date of the balance sheet but arose after the balance sheet date and before financial statements are available to be issued. The Company has evaluated events subsequent to the balance sheet date through the date these consolidated financial statements were filed with the SEC.
Fair Value Measurements	Under FASB ASC 820-10, we group assets and liabilities 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. These levels are: Level 1 Valuation is based upon quoted prices for identical instruments traded in active markets. Level 2 Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques. Risks with Fair Value Measurements Fair value estimates are made at a discrete point in time based on relevant market information and other information about the financial instruments. Because no active market exists for a significant portion of our financial instruments, fair value estimates are based in large part on judgments we make primarily regarding current economic conditions, risk characteristics of various financial instruments, prepayment rates, and future expected loss experience. These estimates are subjective in nature and invariably involve some inherent uncertainties. Additionally, the occurrence of unexpected events or changes in circumstances can occur that could require us to make changes to our assumptions and which, in turn, could significantly affect and require us to make changes to our previous estimates of fair value. In addition, the fair value estimates are based on existing on and off-balance sheet financial instruments without attempting to estimate the value of existing and anticipated future customer relationships and the value of assets and liabilities that are not considered financial instruments, such as premises and equipment and OREO. Measurement Methodology Cash and Cash Equivalents. The fair value of cash and cash equivalents approximates its carrying value. Interest-Bearing Deposits with Financial Institutions. The fair values of interest-bearing deposits maturing within one year approximate their carrying values. FHLB and FRBSF Stock. The Bank is a member of the FHLB and the FRBSF. As members, we are required to own stock of the FHLB and the FRBSF, the amount of which is based primarily on the level of our borrowings from those institutions. We also have the right to acquire additional shares of stock in either or both of the FHLB and the FRBSF. During the year ended December 31, 2017 , we purchased $38 thousand of FHLB stock and $317 thousand of FRBSF stock. During the year ended December 31, 2017 , 8,354 shares, or $418 thousand , of FRBSF stock was called by FRBSF. The fair values of the FHLB and FRBSF stock are equal to their respective carrying amounts, are classified as restricted securities and are periodically evaluated for impairment based on our assessment of the ultimate recoverability of our investments in that stock. Any cash or stock dividends paid to us on such stock are reported as income. Investment Securities Available for Sale. Fair value measurement for our investment securities available for sale is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 investment securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the- counter markets and money market funds. Level 2 investment securities include mortgage-backed securities issued by government sponsored entities, municipal bonds and corporate debt securities. Securities classified as Level 3 include asset-backed securities in less liquid markets. Other Investments . Other investments accounted for under the cost method of accounting are carried at their respective carrying amounts and are periodically evaluated for impairment based on our assessment of the ultimate recoverability of our investment. In the event that there are no identified events or changes in circumstances that may have a significant adverse effect on the fair value of the investment and it is not practicable to estimate the fair value of the investment, then the fair value of such investment is not estimated. Any cash or stock dividends paid to us on such investments are reported as noninterest income. Impaired Loans . Loans measured for impairment are measured at an observable market price (if available), or the fair value of the loan’s collateral (if the loan is collateral dependent). The fair value of an impaired loan may be estimated using one of several methods, including collateral value, market value of similar debt, liquidation value and discounted cash flows. Those impaired loans not requiring a specific loan loss reserve represent loans for which the fair value of the expected repayments or collateral exceeds the recorded investments in such loans. When the fair value of the collateral is based on an observable market price or a current appraised value, we record the impaired loan at Level 2. When an appraised value is not available or we determine that the fair value of the collateral is further impaired below the appraised value and there is no observable market price, we record the impaired loan at Level 3. Loans . The fair value for loans with variable interest rates less a credit discount is the carrying amount. The fair value of fixed rate loans is derived by calculating the present value of expected future cash flows discounted at the loan’s original interest rate by the various homogeneous categories of loans. All loans have been adjusted to reflect changes in credit risk. Changes are not recorded directly as an adjustment to current earnings or comprehensive income, but rather as an adjustment component in determining the overall adequacy of the loan loss reserve. Other Foreclosed Assets. Other foreclosed assets is reported at its net realizable value (fair value less estimated costs to sell), at the time any collateral other than real estate is acquired by the Bank in satisfaction of a loan. Subsequently, other foreclosed assets are carried at the lower of carrying value or fair value less estimated costs to sell. Fair value is determined based upon independent market prices, appraised values of the collateral or management’s estimation of the value of the collateral. When the fair value of the collateral is based on an observable market price or a current appraised value, we record the foreclosed asset at Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, we record the foreclosed asset at Level 3. Deposits. Deposits are carried at historical cost. The carrying amounts of deposits from savings and money market accounts are deemed to approximate fair value as they either have no stated maturities or short-term maturities. Certificates of deposit are estimated utilizing discounted cash flow techniques. The interest rates applied are rates currently being offered for similar certificates of deposit. Borrowings. The fair value of borrowings is the carrying amount for those borrowings that mature on a daily basis. The fair value of term borrowings is derived by calculating the discounted value of future cash flows expected to be paid out by the Company. We classify our borrowings in Level 2 of the fair value hierarchy. Junior Subordinated Debentures. The fair value of the junior subordinated debentures is based on quoted market prices of the underlying securities. These securities are variable rate in nature and repriced quarterly. We classify our junior subordinated debentures in Level 2 of the fair value hierarchy. Commitments to Extend Credit and Standby Letters of Credit. The fair value of commitments to extend credit and standby letters of credit are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. Interest Receivable and Interest Payable. The carrying amounts of our accrued interest receivable and accrued interest payable are deemed to approximate fair value.

Significant Accounting Polici28

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Premises and equipment estimated useful lives	Rates of depreciation and amortization are based on the following estimated useful lives: Furniture and equipment Three to seven years Leasehold improvements Lesser of the lease term or estimated useful life

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured on a recurring basis	The following tables show the recorded amounts of assets and liabilities measured at fair value on a recurring basis at December 31, 2017 and 2016 . At December 31, 2017 (Dollars in thousands) Total Level 1 Level 2 Level 3 Assets and Liabilities at Fair Value: Investment securities available for sale U.S. Treasury securities $ 2,971 $ — $ 2,971 $ — Mortgage backed securities issued by U.S. agencies $ 30,122 $ — $ 30,122 $ — Collateralized mortgage obligations issued by non-agency — — — — Asset-backed securities 1,741 — — 1,741 Mutual funds 4,904 4,904 — — Total securities available for sale at fair value $ 39,738 $ 4,904 $ 33,093 $ 1,741 At December 31, 2016 (Dollars in thousands) Total Level 1 Level 2 Level 3 Assets and Liabilities at Fair Value: Investment securities available for sale Mortgage backed securities issued by U.S. agencies $ 36,675 $ — $ 36,675 $ — Collateralized mortgage obligations issued by non agency 468 — 468 — Asset-backed securities 1,433 — — 1,433 Mutual funds 4,904 4,904 — — Total securities available for sale at fair value $ 43,480 $ 4,904 $ 37,143 $ 1,433
Changes in Level 3 assets measured at fair value on a recurring basis	The changes in Level 3 assets measured at fair value on a recurring basis are summarized as follows for the year ended December 31, 2017 : Asset Backed Securities (Dollars in thousands) Balance of recurring Level 3 instruments at December 31, 2016 $ 1,433 Total gains or losses (realized/unrealized): Included in other comprehensive income 308 Balance of Level 3 assets at December 31, 2017 $ 1,741
Assets measured at fair value on a nonrecurring basis	Information regarding assets measured at fair value on a nonrecurring basis is set forth in the table below. At December 31, 2017 At December 31, 2016 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets at Fair Value: (Dollars in thousands) Impaired loans $ 6,360 $ — $ — $ 6,360 $ 24,897 $ — $ — $ 24,897
Summary of significant unobservable inputs and valuation techniques	For our fair value measurements classified in Level 3 of the fair value hierarchy as of December 31, 2017 , a summary of the significant unobservable inputs and valuation techniques is as follows: Fair Value Measurement as of December 31, 2017 Valuation Techniques Unobservable Inputs Range Weighted Average (Dollars in thousands) Assets Asset-backed security $ 1,741 Third-Party Pricing Marketability discount N/A (1) Illiquidity discount N/A (1) Impaired loans 6,360 Third-Party Pricing Discounted cash flow N/A (2) $ 8,101 (1) Information is unavailable as valuation was obtained from third-party pricing services. (2) We obtain appraisals for our various properties included within impaired loans which primarily rely upon market comparisons. These market comparisons support our assumption that the carrying value of the respective loans either requires or does not require additional impairment.
Estimated fair values and related carrying amounts of financial instruments	The table below provides estimated fair values and related carrying amounts of our financial instruments as of December 31, 2017 and December 31, 2016 , excluding financial assets and liabilities which are recorded at fair value on a recurring basis. Estimated Fair Value At December 31, 2017 At December 31, 2016 Carrying Value Total Level 1 Level 2 Level 3 Carrying Value Total Level 1 Level 2 Level 3 (Dollars in thousands) Financial assets: Cash and cash equivalents $ 198,208 $ 198,208 $ 198,208 $ — $ — $ 138,845 $ 138,845 138,845 — — Interest-bearing deposits with financial institutions 2,920 2,920 2,920 — — 3,669 3,669 3,669 — — Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock 8,107 8,107 8,107 — — 8,170 8,170 8,170 — — Loans, net 1,053,201 1,046,171 — — 1,046,171 931,525 928,885 — — 928,885 Accrued interest receivable 3,872 3,872 3,872 — — 2,702 2,702 2,702 — — Financial liabilities: Noninterest bearing deposits 338,273 338,273 338,273 — — 332,573 332,573 332,573 — — Interest-bearing deposits 801,120 800,169 — 800,169 — 668,727 668,089 — 668,089 — Borrowings 40,866 41,238 — 41,238 — 15,000 15,000 — 15,000 — Junior subordinated debentures 17,527 17,527 — 17,527 — 17,527 17,527 — 17,527 — Accrued interest payable 397 397 397 — — 201 201 201 — —

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Major components of securities available for sale and comparison of amortized cost, estimated fair market values, and gross unrealized gains and losses	The following table sets forth the major components of securities available for sale and compares the amortized costs and estimated fair market values of, and the gross unrealized gains and losses on, these securities at December 31, 2017 and 2016 : (Dollars in thousands) December 31, 2017 December 31, 2016 Amortized Cost Gross Unrealized Estimated Fair Value Amortized Cost Gross Unrealized Estimated Fair Value Gain Loss Gain Loss Securities Available for Sale US Treasury securities $ 2,996 $ — $ (25 ) $ 2,971 $ — $ — $ — $ — Mortgage backed securities issued by U.S. Agencies (1) $ 30,894 $ 5 $ (777 ) $ 30,122 $ 37,813 $ 6 $ (1,144 ) $ 36,675 Collateralized mortgage obligations issued by non agencies (1) — — — — 484 — (16 ) 468 Asset backed security (2) 1,992 — (251 ) 1,741 2,025 — (592 ) 1,433 Mutual funds (3) 5,000 11 (107 ) 4,904 5,000 11 (107 ) 4,904 Total $ 40,882 $ 16 $ (1,160 ) $ 39,738 $ 45,322 $ 17 $ (1,859 ) $ 43,480 (1) Secured by closed-end first liens on 1-4 family residential mortgages. (2) Comprised of a security that represents an interest in a pool of trust preferred securities issued by U.S.-based banks and insurance companies. (3) Consists primarily of mutual fund investments in closed-end first lien 1-4 family residential mortgages.
Amortized cost and estimated fair values of securities available for sale by contractual maturities and historical prepayments based on prior twelve months of principal payments	Expected maturities will differ from contractual maturities and historical prepayments, particularly with respect to collateralized mortgage obligations, primarily because prepayment rates are affected by changes in conditions in the interest rate market and, therefore, future prepayment rates may differ from historical prepayment rates. At December 31, 2017 Maturing in (Dollars in thousands) One year or less Over one year through five years Over five years through ten years Over ten Years Total Securities available for sale, amortized cost $ 5,685 $ 23,772 $ 8,956 $ 2,469 $ 40,882 Securities available for sale, estimated fair value 5,543 23,253 8,727 2,215 39,738 Weighted average yield 1.49 % 1.60 % 1.63 % 3.86 % 1.73 % At December 31, 2016 Maturing in (Dollars in thousands) One year or less Over one year through five years Over five years through ten years Over ten Years Total Securities available for sale, amortized cost $ 8,068 $ 24,014 $ 9,933 $ 3,307 $ 45,322 Securities available for sale, estimated fair value 7,831 23,344 9,619 2,686 43,480 Weighted average yield 1.48 % 1.52 % 1.58 % 2.76 % 1.62 %
Gross unrealized losses and fair values of investments	The tables below indicate, as of December 31, 2017 and 2016 , the gross unrealized losses and fair values of our investments, aggregated by investment category, and length of time that the individual securities have been in a continuous unrealized loss position. Securities with Unrealized Loss at December 31, 2017 Less than 12 months 12 months or more Total (Dollars in thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities $ 2,971 $ (25 ) $ — $ — $ 2,971 $ (25 ) Residential mortgage backed securities issued by U.S. Agencies $ 1,400 $ (15 ) $ 28,241 $ (762 ) $ 29,641 $ (777 ) Non-agency collateralized mortgage obligations — — — — — — Asset backed security — — 1,740 (251 ) 1,740 (251 ) Mutual funds 1,485 (15 ) 2,658 (92 ) 4,143 (107 ) Total $ 5,856 $ (55 ) $ 32,639 $ (1,105 ) $ 38,495 $ (1,160 ) Securities With Unrealized Loss as of December 31, 2016 Less than 12 months 12 months or more Total (Dollars In thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Residential mortgage backed securities issued by U.S. Agencies $ 16,110 $ (267 ) $ 19,975 $ (877 ) $ 36,085 $ (1,144 ) Non-agency collateralized mortgage obligations — — 468 (16 ) 468 (16 ) Asset backed security — — 1,433 (592 ) 1,433 (592 ) Mutual funds 3,185 (65 ) 957 (42 ) 4,142 (107 ) Total $ 19,295 $ (332 ) $ 22,833 $ (1,527 ) $ 42,128 $ (1,859 )
Other-than-temporary impairments, portion attributable to non-credit related factors recognized in other comprehensive loss	The table below presents, for the years ended December 31, 2017 and 2016 , a roll-forward of OTTI in those instances when a portion of the OTTI was attributable to non-credit related factors and, therefore, was recognized in other comprehensive loss: (Dollars in thousands) Gross Other- Than- Temporary Impairments Other-Than- Temporary Impairments Included in Other Comprehensive Loss Net Other-Than- Temporary Impairments Included in Retained Earnings (Deficit) Balance – December 31, 2015 $ (1,100 ) $ (547 ) $ (553 ) Changes in market value on securities for which an OTTI was previously recognized (47 ) (47 ) — Principal received on OTTI security 2 2 — Balance – December 31, 2016 $ (1,145 ) $ (592 ) $ (553 ) Change in market value on a security for which an OTTI was previously recognized 308 308 — Principal received on OTTI security 33 33 — Balance – December 31, 2017 $ (804 ) $ (251 ) $ (553 )
Schedule of cost method investments	As of December 31, 2017 and December 31, 2016 , our other investment was as follows: December 31, 2017 2016 (Dollars in thousands) Investments accounted for under the cost method (1) $ 893 $ 666 (1) Represents the aggregate carrying amount of our investments that were not evaluated for impairment.

Loans and Allowance for Loan 31

Loans and Allowance for Loan and Lease Losses (Tables)	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Composition of loan portfolio	The loan portfolio consisted of the following at: December 31, 2017 December 31, 2016 (Dollars in thousands) Amount Percent Amount Percent Commercial loans $ 394,493 37.1 % $ 333,376 35.2 % Commercial real estate loans – owner occupied 214,365 20.1 % 214,420 22.7 % Commercial real estate loans – all other 228,090 21.4 % 173,223 18.3 % Residential mortgage loans – multi-family 114,302 10.7 % 130,930 13.8 % Residential mortgage loans – single family 24,848 2.3 % 34,527 3.6 % Construction and land development loans 34,614 3.3 % 18,485 2.0 % Consumer loans 53,918 5.1 % 41,563 4.4 % Gross loans 1,064,630 100.0 % 946,524 100.0 % Deferred fee (income) costs, net 2,767 1,802 Allowance for loan and lease losses (14,196 ) (16,801 ) Loans, net $ 1,053,201 $ 931,525
Allowance for loan losses and loan balances	Set forth below is a summary of the activity in the ALLL, by portfolio type, during the years ended December 31, 2017 , 2016 and 2015 . (Dollars in thousands) Commercial Real Estate Construction and Land Development Consumer and Single Family Mortgages Unallocated Total ALLL in the year ended December 31, 2017: Balance at beginning of year $ 11,276 $ 4,226 $ 343 $ 642 $ 314 $ 16,801 Charge offs (4,124 ) (432 ) — (179 ) — (4,735 ) Recoveries 1,852 72 27 179 — 2,130 Provision 151 (960 ) 280 401 128 — Balance at end of year $ 9,155 $ 2,906 $ 650 $ 1,043 $ 442 $ 14,196 ALLL in the year ended December 31, 2016: Balance at beginning of year $ 6,639 $ 5,109 $ 282 $ 686 $ — $ 12,716 Charge offs (15,390 ) (1,119 ) — (540 ) — (17,049 ) Recoveries 1,189 1 57 17 — 1,264 Provision 18,838 235 4 479 314 19,870 Balance at end of year $ 11,276 $ 4,226 $ 343 $ 642 $ 314 $ 16,801 ALLL in the year ended December 31, 2015: Balance at beginning of year $ 7,670 $ 5,133 $ 296 $ 734 $ — $ 13,833 Charge offs (2,643 ) — (85 ) (199 ) — (2,927 ) Recoveries 1,798 4 — 8 — 1,810 Provision (186 ) (28 ) 71 143 — — Balance at end of year $ 6,639 $ 5,109 $ 282 $ 686 $ — $ 12,716 Set forth below is information regarding loan balances and the related ALLL, by portfolio type, as of December 31, 2017 and December 31, 2016 . (Dollars in thousands) Commercial Real Estate Land Development Consumer and Single Family Mortgages Unallocated Total ALLL balance at December 31, 2017 related to: Loans individually evaluated for impairment $ 7 $ — $ — $ — $ — $ 7 Loans collectively evaluated for impairment $ 9,148 $ 2,906 $ 650 $ 1,043 $ 442 $ 14,189 Total $ 9,155 $ 2,906 $ 650 $ 1,043 $ 442 $ 14,196 Loans balance at December 31, 2017 related to: Loans individually evaluated for impairment $ 3,672 $ 2,461 $ — $ 227 $ — $ 6,360 Loans collectively evaluated for impairment 390,821 554,296 34,614 78,539 — 1,058,270 Total $ 394,493 $ 556,757 $ 34,614 $ 78,766 $ — $ 1,064,630 ALLL balance at December 31, 2016 related to: Loans individually evaluated for impairment $ 2,042 $ — $ — $ — $ — $ 2,042 Loans collectively evaluated for impairment $ 9,234 $ 4,226 $ 343 $ 642 $ 314 $ 14,759 Total $ 11,276 $ 4,226 $ 343 $ 642 $ 314 $ 16,801 Loans balance at December 31, 2016 related to: Loans individually evaluated for impairment $ 20,330 $ 4,346 $ — $ 221 $ — $ 24,897 Loans collectively evaluated for impairment 313,046 514,227 18,485 75,869 — 921,627 Total $ 333,376 $ 518,573 $ 18,485 $ 76,090 $ — $ 946,524
Summary of delinquency status of loans by portfolio type	The following table provides a summary of the delinquency status of loans by portfolio type at December 31, 2017 and 2016 : (Dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days and Greater Total Past Due Current Total Loans Outstanding Loans >90 Days and Accruing At December 31, 2017 Commercial loans $ 1,387 $ — $ 2,125 $ 3,512 $ 390,981 $ 394,493 $ — Commercial real estate loans – owner-occupied — — — — 214,365 214,365 — Commercial real estate loans – all other — 936 — 936 227,154 228,090 — Residential mortgage loans – multi-family — — — — 114,302 114,302 — Residential mortgage loans – single family — — — — 24,848 24,848 — Land development loans — — — — 34,614 34,614 — Consumer loans — — — — 53,918 53,918 — Total $ 1,387 $ 936 $ 2,125 $ 4,448 $ 1,060,182 $ 1,064,630 $ — At December 31, 2016 Commercial loans $ 7,055 $ — $ 13,946 $ 21,001 $ 312,375 $ 333,376 $ — Commercial real estate loans – owner-occupied 275 2,341 1,003 3,619 210,801 214,420 — Commercial real estate loans – all other 512 1,014 — 1,526 171,697 173,223 — Residential mortgage loans – multi-family — — — — 130,930 130,930 — Residential mortgage loans – single family — — — — 34,527 34,527 — Land development loans — — — — 18,485 18,485 — Consumer loans 38 — — 38 41,525 41,563 — Total $ 7,880 $ 3,355 $ 14,949 $ 26,184 $ 920,340 $ 946,524 $ —
Loans on nonaccrual status by portfolio type	The following table provides information with respect to loans on nonaccrual status, by portfolio type, as of December 31, 2017 and 2016 : December 31, 2017 2016 (Dollars in thousands) Nonaccrual loans: Commercial loans $ 3,222 $ 20,330 Commercial real estate loans – owner occupied 893 2,643 Commercial real estate loans – all other 1,568 1,703 Residential mortgage loans – single family 171 221 Consumer loans 56 — Total (1) $ 5,910 $ 24,897 (1) Nonaccrual loans may include loans that are currently considered performing loans.
Summary of loans by portfolio type and internal credit quality ratings	We classify our loan portfolio using internal credit quality ratings. The following table provides a summary of loans by portfolio type and our internal credit quality ratings as of December 31, 2017 and 2016 , respectively. December 31, (Dollars in thousands) 2017 2016 Increase (Decrease) Pass: Commercial loans $ 375,024 $ 287,717 $ 87,307 Commercial real estate loans – owner occupied 207,094 197,497 9,597 Commercial real estate loans – all other 226,522 169,292 57,230 Residential mortgage loans – multi family 114,302 130,930 (16,628 ) Residential mortgage loans – single family 24,677 34,306 (9,629 ) Construction and land development loans 34,614 18,485 16,129 Consumer loans 53,862 41,563 12,299 Total pass loans $ 1,036,095 $ 879,790 $ 156,305 Special Mention: Commercial loans $ 11,009 $ 4,672 $ 6,337 Commercial real estate loans – owner occupied 6,378 7,834 (1,456 ) Commercial real estate loans – all other — 2,228 (2,228 ) Total special mention loans $ 17,387 $ 14,734 $ 2,653 Substandard: Commercial loans $ 8,094 $ 37,668 $ (29,574 ) Commercial real estate loans – owner occupied 893 9,089 (8,196 ) Commercial real estate loans – all other 1,568 1,703 (135 ) Residential mortgage loans – single family 171 221 (50 ) Consumer loans 56 — 56 Total substandard loans $ 10,782 $ 48,681 $ (37,899 ) Doubtful: Commercial loans $ 366 $ 3,319 $ (2,953 ) Total doubtful loans $ 366 $ 3,319 $ (2,953 ) Total Loans: $ 1,064,630 $ 946,524 $ 118,106
Schedule of impaired loans	The following table sets forth information regarding impaired loans, at December 31, 2017 and December 31, 2016 : December 31, (Dollars in thousands) 2017 2016 Impaired loans: Nonaccruing loans $ 5,101 $ 15,966 Nonaccruing restructured loans 809 8,931 Accruing restructured loans (1) 450 — Total impaired loans $ 6,360 $ 24,897 Impaired loans less than 90 days delinquent and included in total impaired loans $ 3,994 $ 9,948 (1) See "Troubled Debt Restructurings" below for a description of accruing restructured loans at December 31, 2017 and December 31, 2016 . The table below contains additional information with respect to impaired loans, by portfolio type, as of December 31, 2017 and 2016 : December 31, 2017 December 31, 2016 Recorded Investment Unpaid Principal Balance Related Allowance (1) Recorded Investment Unpaid Principal Balance Related Allowance (1) (Dollars in thousands) No allowance recorded: Commercial loans $ 3,222 $ 5,910 $ — $ 17,021 $ 19,048 $ — Commercial real estate loans – owner occupied 893 945 — 2,643 4,335 — Commercial real estate loans – all other 1,568 1,965 — 1,703 1,965 — Residential mortgage loans – single family 171 185 — 221 225 — Consumer loans 56 73 — — — — Total 5,910 9,078 — 21,588 25,573 — With allowance recorded: Commercial loans $ 450 $ 450 $ 7 $ 3,309 $ 4,764 $ 2,042 Total 450 450 7 3,309 4,764 2,042 Total Commercial loans $ 3,672 $ 6,360 $ 7 $ 20,330 $ 23,812 $ 2,042 Commercial real estate loans – owner occupied 893 945 — 2,643 4,335 — Commercial real estate loans – all other 1,568 1,965 — 1,703 1,965 — Residential mortgage loans – single family 171 185 — 221 225 — Consumer loans 56 73 — — — — Total 6,360 9,528 7 24,897 30,337 2,042 (1) When the discounted cash flows, collateral value or market price equals or exceeds the recorded investment in the loan, then specific reserves are not required to be set aside for the loan within the ALLL. This typically occurs when the impaired loans have been partially charged-off and/or there have been interest payments received and applied to the balance of the principal outstanding. Average balances and interest income recognized on impaired loans, by portfolio type, for the year ended December 31, 2017 , 2016 and 2015 were as follows: Year Ended December 31, 2017 2016 2015 Average Balance Interest Income Recognized Average Balance Interest Income Recognized Average Balance Interest Income Recognized No allowance recorded: Commercial loans $ 10,178 $ 128 $ 13,686 $ 437 $ 13,455 $ 178 Commercial real estate loans – owner occupied 1,215 — 2,455 3 2,494 115 Commercial real estate loans – all other 1,616 — 4,413 — 6,256 337 Residential mortgage loans – multi-family — — 350 — 451 13 Residential mortgage loans – single family 183 — 339 9 3,137 — Construction and land development loans — — 871 — 1,665 7 Consumer loans 80 5 173 — — — Total 13,272 133 22,287 449 27,458 650 With allowance recorded: Commercial loans 3,150 33 4,728 457 528 — Commercial real estate loans – owner occupied — — 962 — 815 — Total 3,150 33 5,690 457 1,343 — Total Commercial loans 13,328 161 18,414 894 13,983 178 Commercial real estate loans – owner occupied 1,215 — 3,417 3 3,309 115 Commercial real estate loans – all other 1,616 — 4,413 — 6,256 337 Residential mortgage loans – multi-family — — 350 — 451 13 Residential mortgage loans – single family 183 — 339 9 3,137 — Construction and land development loans — — 871 — 1,665 7 Consumer loans 80 5 173 — — — Total $ 16,422 $ 166 $ 27,977 $ 906 $ 28,801 $ 650
Troubled debt restructurings	The following table presents loans restructured as TDRs during the years ended December 31, 2017 , 2016 and 2015 : Year Ended December 31, 2017 2016 2015 (Dollars in thousands) Number of loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Performing Commercial loans 1 $ 450 $ 450 — $ — $ — 2 $ 147 $ 147 Commercial real estate - owner occupied — — — — — — 1 177 177 Commercial real estate – all other — — — — — — 1 400 400 1 450 450 — — — 4 724 724 Nonperforming Commercial loans 1 1,329 809 — — — 3 2,634 2,634 Commercial real estate – owner occupied — — — — — — 2 1,778 1,778 Commercial real estate – all other — — — — — — 1 4,114 4,114 1 1,329 809 — — — 6 8,526 8,526 Total troubled debt restructurings (1) 2 $ 1,779 $ 1,259 — $ — $ — 10 $ 9,250 $ 9,250 (1) No loans were restructured during the year ended December 31, 2016. During the years ended December 31, 2017 , 2016 and 2015 , TDRs that were modified within the preceding 12-month period which subsequently defaulted were as follows: Year Ended December 31, 2017 2016 2015 Number of loans Recorded Investment Number of loans Recorded Investment Number of loans Recorded Investment (Dollars in thousands) Commercial real estate - owner occupied (1) — $ — 1 $ 753 1 $ 4,114 (1) As of December 31, 2017, no TDRs were modified within the preceding 12-month period which subsequently defaulted.

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Major classes of premises and equipment	The major classes of premises and equipment are as follows: (Dollars in thousands) December 31, 2017 2016 Furniture and equipment $ 6,549 $ 7,589 Leasehold improvements 23 206 6,572 7,795 Accumulated depreciation and amortization (5,478 ) (6,538 ) Total $ 1,094 $ 1,257

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Maturities of time certificates of deposit	The scheduled maturities of time deposits in denominations of $250,000 or more at December 31, 2017 were as follows: (Dollars in thousands) At December 31, 2017 2018 $ 59,802 2019 32,649 2020 760 2021 — 2022 and beyond 928 Total $ 94,139

Borrowings and Contractual Ob34

Borrowings and Contractual Obligations (Tables)	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Borrowings	At December 31, 2017 and 2016 , our borrowings and contractual obligations consisted of the following: December 31, (Dollars in thousands) 2017 2016 FHLB advances—short-term $ 40,000 $ 15,000 Other borrowings—short-term (1) 866 — Total borrowings—short-term 40,866 15,000 FHLB advances—long-term — — Total $ 40,866 $ 15,000 (1) Borrowings mature on March 31, 2018 and have an interest rate of 15% . This represents the portion of a participated loan that is required under GAAP to be recorded as other borrowings.
Schedule of FHLB borrowings	These borrowings had a weighted-average annualized interest rate of 1.65% for the year ended December 31, 2017 . Principal Amounts Interest Rate Maturity Dates (Dollars in thousands) 10,000 1.48 % March 1, 2018 10,000 1.62 % June 1, 2018 10,000 1.72 % September 4, 2018 10,000 1.77 % December 3, 2018
Terms of debentures remained outstanding	Set forth below are the respective principal amounts, and certain other information regarding the terms of the Debentures that remained outstanding as of December 31, 2017 and 2016 : Original Issue Dates Principal Amount Interest Rate (1) Maturity Dates (In thousands) September 2002 $ 7,217 LIBOR plus 3.40% September 2032 October 2004 10,310 LIBOR plus 2.00% October 2034 Total $ 17,527 (1) Interest rate resets quarterly.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Components of income tax expense (benefit)	The components of income tax (benefit) expense from continuing operations consisted of the following for the years ended December 31: (Dollars in thousands) 2017 2016 2015 Current taxes: Federal $ (125 ) $ — $ 5 State 34 (5 ) 4 Total current taxes (91 ) (5 ) 9 Deferred taxes: Federal — 10,044 (8,490 ) State — 6,793 (3,070 ) Total deferred taxes — 16,837 (11,560 ) Total income tax (benefit) expense $ (91 ) $ 16,832 $ (11,551 )
Differences between statutory federal income tax rate and effective tax rates	The reasons for the differences between the statutory federal income tax rates and our effective tax rates are summarized in the following table: Year Ended December 31, 2017 2016 2015 Federal income tax based on statutory rate 34.0 % 34.0 % 34.0 % State franchise tax net of federal income tax benefit 7.2 7.2 7.1 Permanent differences (0.4 ) — — Other 1.4 (0.1 ) 3.9 Valuation allowance (43.1 ) (135.6 ) (1,343.5 ) Total effective tax rate (0.9 )% (94.5 )% (1,298.5 )%
Components of deferred tax asset	The components of our net deferred tax asset are as follows at: (Dollars in thousands) December 31, 2017 2016 Deferred tax asset: Allowance for loan and lease losses $ 4,207 $ 6,932 Other than temporary impairment on securities 56 78 Deferred compensation 693 1,033 Litigation reserve 131 — Other accrued expenses 927 2,075 Charitable contributions 241 244 Reserve for unfunded commitments 103 144 Tax credits 60 158 Net operating loss carry forward 9,754 13,410 Stock based compensation 363 747 Depreciation and amortization — 166 Unrealized losses on securities and deferred compensation 338 758 Total deferred tax assets 16,873 25,745 Deferred tax liabilities: Depreciation and amortization (133 ) — Other (803 ) (741 ) Total deferred tax liabilities (936 ) (741 ) Valuation allowance (15,937 ) (25,004 ) Total net deferred tax asset $ — $ —
Summary of net operating loss carryforwards	Refer to the table below for the amount and expiration of our net operating loss carryforwards: Federal State Expiration (amounts in thousands) 2008 (1) $ — $ 4,608 12/31/2032 2009 (1) — 21,324 12/31/2032 2010 (1) — 5,258 12/31/2032 2012 852 774 12/31/2032 2013 14,977 8,967 12/31/2033 2015 288 571 12/31/2035 2016 14,436 14,453 12/31/2036 $ 30,553 $ 55,955 (1) California net operating loss carryforwards were suspended by the Franchise Tax Board during these periods and the carryover was extended.

Stock-Based Employee Compensa36

Stock-Based Employee Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted average assumptions used to determine fair values of options granted	The table below summarizes the weighted average assumptions used to determine the fair values of the options granted during the following periods: Year Ended December 31, Assumptions with respect to: 2017 2016 2015 Expected volatility 33 % 38 % 44 % Risk-free interest rate 1.98 % 1.70 % 1.82 % Expected dividends — % — % — % Expected term (years) 5.7 6.3 6.0 Weighted average fair value of options granted during period $ 2.84 $ 2.78 $ 2.81
Stock option activity under plans	The following table summarizes the stock option activity under the Company’s equity incentive plans during the years ended December 31, 2017 , 2016 and 2015 , respectively. Number of Shares Weighted- Average Exercise Price Per Share Number of Shares Weighted- Average Exercise Price Per Share Number of Shares Weighted- Average Exercise Price Per Share 2017 2016 2015 Outstanding – January 1, 1,066,914 $ 6.35 838,696 $ 6.20 1,257,390 $ 6.51 Granted 3,700 8.21 402,051 6.89 112,828 7.09 Exercised (205,970 ) 5.89 (97,292 ) 4.66 (296,100 ) 5.15 Forfeited/Canceled (72,067 ) 7.06 (76,541 ) 9.74 (235,422 ) 9.59 Outstanding – December 31, 792,577 6.41 1,066,914 6.35 838,696 6.20 Options Exercisable – December 31, 537,229 6.17 604,970 5.95 622,770 6.06 Options Vested – December 31, 537,229 $ 6.17 604,970 $ 5.95 622,770 $ 6.06
Additional information regarding vested and unvested options outstanding	The following table provides additional information regarding the vested and unvested options that were outstanding at December 31, 2017 . Options Outstanding as of December 31, 2017 Options Exercisable (1) Vested Unvested Weighted Average Exercise Price Weighted Average Remaining Contractual Life (Years) Shares Weighted Average Exercise Price $2.97 – $3.99 51,003 — $ 3.50 2.76 51,003 $ 3.50 $4.00 – $4.99 16,000 — 4.34 3.30 16,000 4.34 $5.00– $5.99 30,000 — 5.30 5.46 30,000 5.30 $6.00– $6.99 366,385 159,102 6.60 6.50 366,385 6.51 $7.00-$8.06 73,841 96,246 7.11 7.78 73,841 7.08 537,229 255,348 $ 6.41 6.43 537,229 $ 6.17 (1) The weighted average remaining contractual life of the options that were exercisable as of December 31, 2017 was 5.68 years.
Summary of status of unvested options and weighted average grant date fair values of unvested options	A summary of the status of the unvested options outstanding as of December 31, 2017 , 2016 and 2015 , and changes in the weighted average grant date fair values of the unvested options during the years ended December 31, 2017 , 2016 and 2015 , are set forth in the following table. For the year ended 2017 2016 2015 Number of Shares Subject to Options Weighted Average Grant Date Fair Value Number of Weighted Number of Weighted Unvested at the beginning of the year 461,944 $ 2.79 215,926 $ 2.93 468,504 $ 2.68 Granted 3,700 2.84 402,051 2.75 112,828 3.13 Vested (141,829 ) 2.83 (108,820 ) 2.86 (248,406 ) 2.63 Forfeited/Canceled (68,467 ) 2.68 (47,213 ) 2.88 (117,000 ) 2.78 Unvested at the end of the year 255,348 $ 2.80 461,944 $ 2.79 215,926 $ 2.93
Schedule of restricted stock activity	The following table summarizes the activity related to restricted stock granted, vested and forfeited under our equity incentive plans during the years ended December 31, 2017 , 2016 and 2015. For the year ended 2017 2016 2015 Number of Shares Average Grant Date Fair Value Number of Shares Average Grant Date Fair Value Number of Shares Average Grant Date Fair Value Outstanding at the beginning of the year 151,298 $ 6.84 129,283 $ 6.75 141,254 $ 6.29 Granted 40,907 8.02 121,775 6.79 98,829 7.11 Vested (69,667 ) 6.80 (67,456 ) 6.68 (80,709 ) 6.48 Forfeited (19,030 ) 6.82 (32,304 ) 6.64 (30,091 ) 6.44 Outstanding at the end of the year 103,508 $ 7.33 151,298 $ 6.84 129,283 $ 6.75
Compensation expense of non-vested stock options outstanding	We expect that the compensation expense that will be recognized during the periods presented below in respect of stock options and restricted stock outstanding at December 31, 2017 , will be as follows: Estimated Stock Based Compensation Expense Stock Options Estimated Stock Based Compensation Expense Restricted Stock Estimated Stock Based Compensation Expense Total (Dollars in thousands) For the years ending December 31, 2018 $ 313 $ 211 $ 524 2019 65 73 138 2020 22 48 70 2021 11 39 50 2022 and beyond 1 20 21 $ 412 $ 391 $ 803

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2017
Retirement Benefits [Abstract]
Changes in projected benefit obligations under supplemental retirement plan	The changes in the projected benefit obligations under the SERP during 2017 , 2016 and 2015 , its funded status at December 31, 2017 , 2016 and 2015 , and the amounts recognized in our consolidated statements of financial condition at each of those dates were as follows: At December 31, (Dollars in thousands) 2017 2016 2015 Change in benefit obligation: Benefit obligation at beginning of period $ 2,511 $ 2,667 $ 2,815 Service cost — — — Interest cost 141 150 159 Actuarial loss/(gain) — — — (Benefits paid) (307 ) (306 ) (307 ) Benefit obligation at end of period $ 2,345 $ 2,511 $ 2,667 Funded status: Amounts recognized in the Statement of Financial Condition Unfunded accrued SERP liability—current $ (299 ) $ (299 ) $ (299 ) Unfunded accrued SERP liability—noncurrent (2,046 ) (2,212 ) (2,368 ) Total unfunded accrued SERP liability $ (2,345 ) $ (2,511 ) $ (2,667 ) Net amount recognized in accumulated other comprehensive income Prior service cost/(benefit) $ — $ — $ — Net actuarial loss/(gain) — — — Total net amount recognized in accumulated other comprehensive income $ — $ — $ — Accumulated benefit obligation $ 2,345 $ 2,511 $ 2,667 Components of net periodic SERP cost year to date: Service cost $ — $ — $ — Interest cost 141 150 159 Amortization of prior service cost/(benefit) — — — Amortization of net actuarial loss/(gain) — — — Net periodic SERP cost $ 141 $ 150 $ 159

Earnings Per Share ("EPS") (Tab

Earnings Per Share ("EPS") (Tables)	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Computation of basic and diluted earnings per share	The following table shows how we computed basic and diluted EPS for the years ended December 31, 2017 , 2016 and 2015 . (In thousands, except per share data) For the Year Ended December 31, 2017 2016 2015 Numerator: Net income (loss) from continuing operations $ 10,449 $ (34,643 ) $ 12,441 Dividends on preferred stock — — (927 ) Inducements for exchange of the preferred stock — — (512 ) Numerator for basic and diluted net income (loss) available to common shareholders $ 10,449 $ (34,643 ) $ 11,002 Denominator: Basic weighted average outstanding shares of common stock 23,180 22,959 20,517 Dilutive effect of employee stock options 132 — 159 Diluted weighted average common stock and common stock equivalents 23,312 22,959 20,675 Basic income (loss) common share (1) : Net income (loss) available to common shareholders $ 0.45 $ (1.51 ) $ 0.54 Diluted income (loss) per common share (1) : Net income (loss) available to common shareholders $ 0.45 $ (1.51 ) $ 0.53 (1) The basic and diluted earnings per share amounts for the years ended December 31, 2017 and 2015 are the same under both the Treasury Stock Method and the Two-Class Method as prescribed in FASB ASC 260-10, Earnings Per Share . The Two-Class Method is not required for the year ended December 31, 2016.
Antidilutive securities excluded from earnings per share	The weighted average shares that have an antidilutive effect in the calculation of diluted net income (loss) per share and have been excluded from the computations above were as follows: For the Year Ended December 31, 2017 2016 2015 Stock options (1)(2) 200,824 1,038,317 360,600 (1) Stock options were excluded from the computation of diluted earnings per common share for the year ended December 31, 2016 as we reported a net loss from continuing operations. (2) Stock options were excluded from the computation of diluted earnings per common share for the years ended December 31, 2017 and 2015 because the options were either “out-of-the-money” or the effect of exercise would have been antidilutive.

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Schedule of accumulated other comprehensive income, net	Accumulated other comprehensive income, net as of December 31, 2017 , 2016 and 2015 was as follows: Unrealized Gain (Loss) on Securities Available-for-Sale, net of tax Accumulated Other Comprehensive Income, Net (Dollars in thousands) Beginning balance as of January 1, 2015 $ (692 ) $ (692 ) Other comprehensive income before reclassifications, net of tax provision of $81 thousand (1) (118 ) (118 ) Amounts reclassified from accumulated other comprehensive income, net of tax — — Other comprehensive income, net of tax provision of $81 thousand (118 ) (118 ) Ending balance as of December 31, 2015 $ (810 ) $ (810 ) Other comprehensive income before reclassifications, net of tax provision of $739 thousand (1) (1,032 ) (1,032 ) Amounts reclassified from accumulated other comprehensive income, net of tax — — Other comprehensive income, net of tax provision of $739 thousand (1,032 ) (1,032 ) Ending balance as of December 31, 2016 $ (1,842 ) $ (1,842 ) Other comprehensive income before reclassifications (2) 695 695 Amounts reclassified from accumulated other comprehensive income, net of tax (3) 4 4 Other comprehensive income (2) 699 699 Ending balance as of December 31, 2017 $ (1,143 ) $ (1,143 ) (1) Tax impact included in Deferred tax assets . (2) No tax impact as a result of the full valuation allowance recorded against our deferred tax asset at December 31, 2017. (3) Relates to the realized loss on our securities available for sale. The realized loss is included within Net loss on sale of securities available for sale .

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Summary of future minimum non-cancelable lease commitments	Future minimum non-cancelable lease commitments were as follows at December 31, 2017 : (Dollars in thousands) 2018 $ 2,125 2019 2,195 2020 1,105 2021 315 2022 and beyond 655 Total $ 6,395
Activity related repurchase reserves	The following table sets forth information, at December 31, 2017 and 2016 , with respect to our reserves: 2017 2016 Beginning balance $ 254 $ 314 Provision for repurchases (254 ) (60 ) Settlements — — Total repurchases reserve $ — $ 254

Capital_Operating Plans (Tables

Capital/Operating Plans (Tables)	12 Months Ended
	Dec. 31, 2017
Regulatory Capital Requirements [Abstract]
Actual amount and capital ratios of Company and Bank	The actual capital amounts and ratios of the Company and the Bank at December 31, 2017 and December 31, 2016 are presented in the following tables: Applicable Federal Regulatory Requirement At December 31, 2017 Actual Capital For Capital Adequacy Purposes To be Categorized As Well Capitalized Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Total Capital to Risk Weighted Assets: Company $ 147,551 12.2 % $ 102,594 At least 8.625 N/A N/A Bank 137,581 11.6 % 102,386 At least 8.625 $ 118,709 At least 10.0 Common Equity Tier 1 Capital to Risk Weighted Assets: Company 116,005 9.6 % 60,962 At least 5.125 N/A N/A Bank 123,035 10.4 % 60,838 At least 5.125 77,161 At least 6.5 Tier 1 Capital to Risk Weighted Assets: Company $ 133,005 11.0 % $ 78,804 At least 6.625 N/A N/A Bank 123,035 10.4 % 78,645 At least 6.625 $ 94,967 At least 8.0 Tier 1 Capital to Average Assets: Company $ 133,005 10.5 % $ 49,889 At least 4.0 N/A N/A Bank 123,035 9.9 % 49,801 At least 4.0 $ 62,251 At least 5.0 Applicable Federal Regulatory Requirement At December 31, 2016 Actual Capital For Capital Adequacy Purposes To be Categorized As Well Capitalized Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Total Capital to Risk Weighted Assets: Company $ 131,043 12.8 % $ 88,230 At least 8.625 N/A N/A Bank 114,412 11.4 % 86,566 At least 8.625 $ 100,366 At least 10.0 Common Equity Tier 1 Capital to Risk Weighted Assets: Company 101,199 9.9 % 52,427 At least 5.125 N/A N/A Bank 101,807 10.1 % 51,438 At least 5.125 65,238 At least 6.5 Tier 1 Capital to Risk Weighted Assets: Company $ 118,199 11.6 % $ 67,771 At least 6.625 N/A N/A Bank 101,807 10.1 % 66,492 At least 6.625 $ 80,293 At least 8.0 Tier 1 Capital to Average Assets: Company $ 118,199 10.5 % $ 44,923 At least 4.0 N/A N/A Bank 101,807 9.2 % 44,360 At least 4.0 $ 55,450 At least 5.0

Parent Company Only Informati42

Parent Company Only Information (Tables)	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Statements of Financial Condition	Condensed Statements of Financial Condition December 31, (Dollars in thousands) 2017 2016 Assets: Due from banks and interest-bearing deposits with financial institutions $ 13,916 $ 8,621 Investment in subsidiaries 124,550 108,088 Other assets 55 630 Total assets $ 138,521 $ 117,339 Liabilities and shareholders’ equity: Liabilities $ 76 $ 93 Junior subordinated debentures 17,527 17,527 Shareholders’ equity 120,918 99,719 Total liabilities and shareholders’ equity $ 138,521 $ 117,339
Condensed Statements of Operations	Condensed Statements of Operations Year Ended December 31, (Dollars in thousands) 2017 2016 2015 Interest income $ 3 $ 2 $ 9 Interest expense (670 ) (582 ) (507 ) Other income 24 17 28 Other expenses (1,045 ) (1,012 ) (984 ) Equity in undistributed earnings (loss) of subsidiaries 12,195 (33,075 ) 13,895 Income tax (expense) benefit (58 ) 7 — Net income (loss) $ 10,449 $ (34,643 ) $ 12,441
Condensed Statements of Cash Flows	Condensed Statements of Cash Flows Year Ended December 31, (Dollars in thousands) 2017 2016 2015 Cash Flows from Operating Activities: Net income (loss) $ 10,449 $ (34,643 ) $ 12,441 Adjustments to reconcile net income (loss) to net cash used in operating activities: Net decrease (increase) in other assets 47 (19 ) (7 ) Net decrease in deferred taxes — 38 — Stock-based compensation expense 796 1,039 1,233 Undistributed (income) loss of subsidiary (12,195 ) 33,075 (13,895 ) Net increase (decrease) in interest payable 11 (71 ) 81 Net (decrease) increase in other liabilities (26 ) 27 — Net cash used in operating activities (918 ) (554 ) (147 ) Cash Flows from Investing Activities: Net decrease in loans — — — Net cash provided by investing activities — — — Cash Flows from Financing Activities: Payments for exchange of preferred stock for common stock — — (324 ) Common stock options exercised 1,213 455 1,511 Tax effect included in stockholders equity of restricted stock vesting — (16 ) (109 ) Return of capital from subsidiaries 15,000 4,000 — Capital contribution to subsidiaries (10,000 ) (5,000 ) — Net cash provided by (used in) financing activities 6,213 (561 ) 1,078 Net increase (decrease) in cash and cash equivalents 5,295 (1,115 ) 931 Cash and Cash Equivalents, beginning of period 8,621 9,736 8,805 Cash and Cash Equivalents, end of period $ 13,916 $ 8,621 $ 9,736

Business Segment Information (T

Business Segment Information (Tables)	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Net interest income and noninterest income	The following table sets forth information regarding the net interest income and noninterest income for our commercial banking and discontinued operations segments, respectively, for the years ended December 31, 2017 , 2016 and 2015 . (Dollars in thousands) Commercial Other (1) Total Net interest income for the year ended December 31, 2017 $ 42,995 $ 747 $ 43,742 2016 $ 36,044 $ (521 ) $ 35,523 2015 $ 33,932 $ (404 ) $ 33,528 Noninterest income for the year ended December 31, 2017 $ 3,948 $ 426 $ 4,374 2016 $ 3,438 $ (501 ) $ 2,937 2015 $ 2,658 $ 28 $ 2,686 Segment Assets at: December 31, 2017 $ 1,320,454 $ 2,150 $ 1,322,604 December 31, 2016 $ 1,126,890 $ 13,799 $ 1,140,689 (1) Represents net interest income and noninterest income for PMAR and PMBC.

Unaudited Quarterly Informati44

Unaudited Quarterly Information (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Schedule of quarterly financial information	Unaudited quarterly information for each of the three months in the years ended December 31, 2017 and 2016 was as follows: Three Months Ended December 31, 2017 September 30, 2017 June 30, 2017 March 31, 2017 (in thousands, except per share data) Total interest income $ 13,812 $ 14,025 $ 12,132 $ 11,604 Total interest expense 2,542 2,020 1,736 1,533 Net interest income 11,270 12,005 10,396 10,071 Provision for loan and lease losses — — — — Net interest income after provision for loan and lease losses 11,270 12,005 10,396 10,071 Total noninterest income 1,009 964 1,431 970 Total noninterest expense 10,108 9,176 9,262 9,211 Income before income taxes 2,171 3,793 2,565 1,830 Income tax (benefit) provision (241 ) 37 64 49 Net income allocable to common shareholders $ 2,412 $ 3,756 $ 2,501 $ 1,781 Per share data-basic: Net income allocable to common shareholders $ 0.10 $ 0.16 $ 0.11 $ 0.08 Per share data-diluted: Net income allocable to common shareholders $ 0.10 $ 0.16 $ 0.11 $ 0.08 Three Months Ended December 31, 2016 September 30, 2016 June 30, 2016 March 31, 2016 (in thousands, except per share data) Total interest income $ 10,613 $ 10,598 $ 9,835 $ 9,954 Total interest expense 1,462 1,409 1,355 1,251 Net interest income 9,151 9,189 8,480 8,703 Provision for loan and lease losses — 10,730 8,720 420 Net interest income (loss) after provision for loan and lease losses 9,151 (1,541 ) (240 ) 8,283 Total noninterest income 265 1,054 864 754 Total noninterest expense 9,266 9,687 8,893 8,555 Income (loss) before income taxes 150 (10,174 ) (8,269 ) 482 Income tax (benefit) provision (159 ) 20,352 (3,559 ) 198 Net income (loss) allocable to common shareholders $ 309 $ (30,526 ) $ (4,710 ) $ 284 Per share data-basic: Net income (loss) allocable to common shareholders $ 0.01 $ (1.33 ) $ (0.21 ) $ 0.01 Per share data-diluted: Net income (loss) allocable to common shareholders $ 0.01 $ (1.33 ) $ (0.21 ) $ 0.01

Significant Accounting Polici45

Significant Accounting Policies - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)trustSegmentshares	Dec. 31, 2016USD ($)Segmentshares	Dec. 31, 2015Segmentshares	Dec. 31, 2004USD ($)	Dec. 31, 2002USD ($)
Summary Of Significant Accounting Policies [Line Items]
Cash and due from banks	$ 12,198	$ 16,789
Loss reserve for unfunded loan commitments	$ 350	350
Return of TDR loan to accrual status, minimum performance period	6 months
Number of unconsolidated subsidiary investments | trust	2
Junior subordinated debentures	$ 17,527	$ 17,527
Number of stock option forfeited (shares) | shares	72,067	76,541	235,422
Reportable business segments | Segment	1	1	1
Non-reportable segments | Segment	1	1	1
Excess tax benefits from stock based compensation that are not included in deferred tax assets		$ 211
Retained Earnings | ASU 2016-09
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect of new accounting principle in period of adoption		$ 10
Stock options | Officers and Other Employees
Summary Of Significant Accounting Policies [Line Items]
Number of stock option forfeited (shares) | shares	68,467
Restricted stock
Summary Of Significant Accounting Policies [Line Items]
Number of restricted stock options forfeited (shares) | shares	19,030	32,304	30,091
Restricted stock | Officers and Other Employees
Summary Of Significant Accounting Policies [Line Items]
Number of restricted stock options forfeited (shares) | shares	19,030
PMB Statutory Trust III
Summary Of Significant Accounting Policies [Line Items]
Junior subordinated debentures					$ 7,200
PMB Capital Trust III
Summary Of Significant Accounting Policies [Line Items]
Junior subordinated debentures				$ 10,300
Federal Reserve Bank of San Francisco
Summary Of Significant Accounting Policies [Line Items]
Cash and due from banks	$ 1,175	$ 2,109

Significant Accounting Polici46

Significant Accounting Policies - Premises and Equipment Estimated Useful Lives (Details)	12 Months Ended
	Dec. 31, 2017
Minimum
Property, Plant and Equipment [Line Items]
Furniture and equipment, estimated useful life	3 years
Maximum
Property, Plant and Equipment [Line Items]
Furniture and equipment, estimated useful life	7 years

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)shares
Fair Value Disclosures [Abstract]
Payments to acquire Federal Home Loan Bank stock	$ 38
Payments to acquire FRBSF stock	$ 317
Number of FRBSF stock sold | shares	8,354
Proceeds from sale of FRBSF stock	$ 418

Fair Value Measurements - Asset

Fair Value Measurements - Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	$ 39,738	$ 43,480
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	39,738	43,480
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	4,904	4,904
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	33,093	37,143
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	1,741	1,433
US Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	2,971	0
US Treasury securities | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	2,971
US Treasury securities | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0
US Treasury securities | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	2,971
US Treasury securities | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0
Mortgage backed securities issued by U.S. agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	30,122	36,675
Mortgage backed securities issued by U.S. agencies | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	30,122	36,675
Mortgage backed securities issued by U.S. agencies | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Mortgage backed securities issued by U.S. agencies | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	30,122	36,675
Mortgage backed securities issued by U.S. agencies | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Collateralized mortgage obligations issued by non-agency | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	468
Collateralized mortgage obligations issued by non-agency | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Collateralized mortgage obligations issued by non-agency | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	468
Collateralized mortgage obligations issued by non-agency | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Asset-backed security
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	1,741	1,433
Asset-backed security | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	1,741	1,433
Asset-backed security | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Asset-backed security | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Asset-backed security | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	1,741	1,433
Mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	4,904	4,904
Mutual funds | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	4,904	4,904
Mutual funds | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	4,904	4,904
Mutual funds | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Mutual funds | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	$ 0	$ 0

Fair Value Measurements - Chang

Fair Value Measurements - Changes in Level 3 Assets Measured at Fair Value on Recurring Basis (Details) - Asset Backed Securities $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)
Changes in Level 3 assets measured at fair value on a recurring basis
Balance of recurring Level 3 instruments at December 31, 2016	$ 1,433
Total gains or losses (realized/unrealized):
Included in other comprehensive income	308
Balance of Level 3 assets at December 31, 2017	$ 1,741

Fair Value Measurements - Ass50

Fair Value Measurements - Assets Measured at Fair Value on Nonrecurring Basis (Details) - Impaired loans - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	$ 6,360	$ 24,897
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	$ 6,360	$ 24,897

Fair Value Measurements - Valua

Fair Value Measurements - Valuation Techniques for Level 3 Financial Instruments (Details) - Level 3 $ in Thousands	Dec. 31, 2017USD ($)
Asset-backed security | Third-Party Pricing
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 1,741
Impaired loans | Third-Party Pricing
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	6,360
Assets
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 8,101

Fair Value Measurements - Fair

Fair Value Measurements - Fair Values and Related Carrying Amounts of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Carrying Value
Financial assets:
Cash and cash equivalents	$ 198,208	$ 138,845
Interest-bearing deposits with financial institutions	2,920	3,669
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	8,107	8,170
Loans, net	1,053,201	931,525
Accrued interest receivable	3,872	2,702
Financial liabilities:
Noninterest bearing deposits	338,273	332,573
Interest-bearing deposits	801,120	668,727
Borrowings	40,866	15,000
Junior subordinated debentures	17,527	17,527
Accrued interest payable	397	201
Total
Financial assets:
Cash and cash equivalents	198,208	138,845
Interest-bearing deposits with financial institutions	2,920	3,669
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	8,107	8,170
Loans, net	1,046,171	928,885
Accrued interest receivable	3,872	2,702
Financial liabilities:
Noninterest bearing deposits	338,273	332,573
Interest-bearing deposits	800,169	668,089
Borrowings	41,238	15,000
Junior subordinated debentures	17,527	17,527
Accrued interest payable	397	201
Level 1
Financial assets:
Cash and cash equivalents	198,208	138,845
Interest-bearing deposits with financial institutions	2,920	3,669
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	8,107	8,170
Loans, net	0	0
Accrued interest receivable	3,872	2,702
Financial liabilities:
Noninterest bearing deposits	338,273	332,573
Interest-bearing deposits	0	0
Borrowings	0	0
Junior subordinated debentures	0	0
Accrued interest payable	397	201
Level 2
Financial assets:
Cash and cash equivalents	0	0
Interest-bearing deposits with financial institutions	0	0
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	0	0
Loans, net	0	0
Accrued interest receivable	0	0
Financial liabilities:
Noninterest bearing deposits	0	0
Interest-bearing deposits	800,169	668,089
Borrowings	41,238	15,000
Junior subordinated debentures	17,527	17,527
Accrued interest payable	0	0
Level 3
Financial assets:
Cash and cash equivalents	0	0
Interest-bearing deposits with financial institutions	0	0
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	0	0
Loans, net	1,046,171	928,885
Accrued interest receivable	0	0
Financial liabilities:
Noninterest bearing deposits	0	0
Interest-bearing deposits	0	0
Borrowings	0	0
Junior subordinated debentures	0	0
Accrued interest payable	$ 0	$ 0

Investments - Additional Inform

Investments - Additional Information (Details)	1 Months Ended	12 Months Ended
	Nov. 30, 2007USD ($)issuerinstitutioncompany	Dec. 31, 2017USD ($)Investment	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Schedule of Available-for-sale Securities [Line Items]
Aggregate fair market value of securities pledged as collateral		$ 22,700,000	$ 21,100,000
Available for sale security purchased, price paid		3,000,000	0	$ 0
Proceeds from sale of securities available for sale		382,000	0	0
Loss on sale of available securities		4,000	0	0
Impairment credit losses on available-for-sale securities		0	0
Portion of other-than-temporary impairment losses recognized in other comprehensive loss		251,000	592,000	$ 547,000
Amortized cost		40,882,000	45,322,000
Securities available for sale, at fair value		39,738,000	43,480,000
Unrealized loss		$ 1,160,000	1,859,000
Asset-backed security
Schedule of Available-for-sale Securities [Line Items]
Available for sale security purchased, price paid	$ 2,900,000
Number of securities | Investment		1
Trust preferred securities, number of issuers | issuer	56
Trust preferred securities, number of U.S. depository institutions | institution	45
Trust preferred securities, number of insurance companies | company	11
Available for sale security purchased, face value	$ 3,000,000
Available for sale security purchased, price as percentage of face amount	95.21%
Trust preferred securities issued, value	$ 363,000,000
Basis points over 3 months LIBOR	0.60%
Amortized cost		$ 1,992,000	2,025,000
Securities available for sale, at fair value		1,741,000	1,433,000
Unrealized loss		251,000	$ 592,000
Available-for-sale securities, default experienced		$ 42,500,000
Percentage of default to total current collateral		12.70%
Security payment deferrals		$ 7,000,000
Percentage of payment deferrals to total current collateral		2.10%
Excess subordination		$ 63,800,000

Investments - Major Components

Investments - Major Components of Securities Available for Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 40,882	$ 45,322
Gross Unrealized Gain	16	17
Gross Unrealized Loss	(1,160)	(1,859)
Estimated Fair Value	39,738	43,480
US Treasury securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,996	0
Gross Unrealized Gain	0	0
Gross Unrealized Loss	(25)	0
Estimated Fair Value	2,971	0
Mortgage backed securities issued by U.S. agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	30,894	37,813
Gross Unrealized Gain	5	6
Gross Unrealized Loss	(777)	(1,144)
Estimated Fair Value	30,122	36,675
Collateralized mortgage obligations issued by non agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	0	484
Gross Unrealized Gain	0	0
Gross Unrealized Loss	0	(16)
Estimated Fair Value	0	468
Asset-backed security
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,992	2,025
Gross Unrealized Gain	0	0
Gross Unrealized Loss	(251)	(592)
Estimated Fair Value	1,741	1,433
Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	5,000	5,000
Gross Unrealized Gain	11	11
Gross Unrealized Loss	(107)	(107)
Estimated Fair Value	$ 4,904	$ 4,904

Investments - Amortized Cost an

Investments - Amortized Cost and Estimated Fair Value by Contractual Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Amortized Cost
Securities available for sale, amortized cost, maturing in one year or less	$ 5,685	$ 8,068
Securities available for sale, amortized cost, maturing over one year through five years	23,772	24,014
Securities available for sale, amortized cost, maturing over five years through ten years	8,956	9,933
Securities available for sale, amortized cost, maturing over ten years	2,469	3,307
Amortized Cost	40,882	45,322
Estimated Fair Value
Securities available for sale, estimated fair value, maturing in one year or less	5,543	7,831
Securities available for sale, estimated fair value, maturing over one year through five years	23,253	23,344
Securities available for sale, estimated fair value, maturing over five years through ten years	8,727	9,619
Securities available for sale, estimated fair value, maturing over ten years	2,215	2,686
Securities available for sale, estimated fair value, total	$ 39,738	$ 43,480
Weighted Average Yield
Weighted average yield, maturing in one year or less	1.49%	1.48%
Weighted average yield, maturing over one year through five years	1.60%	1.52%
Weighted average yield, maturing over five years through ten years	1.63%	1.58%
Weighted average yield, maturing over ten years	3.86%	2.76%
Weighted average yield, total	1.73%	1.62%

Investments - Securities with i

Investments - Securities with in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	$ 5,856	$ 19,295
Less than 12 months, Unrealized Loss	(55)	(332)
12 months or more, Fair Value	32,639	22,833
12 months or more, Unrealized Loss	(1,105)	(1,527)
Total, Fair Value	38,495	42,128
Total, Unrealized Loss	(1,160)	(1,859)
US Treasury securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	2,971
Less than 12 months, Unrealized Loss	(25)
12 months or more, Fair Value	0
12 months or more, Unrealized Loss	0
Total, Fair Value	2,971
Total, Unrealized Loss	(25)	0
Mortgage backed securities issued by U.S. agencies
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	1,400	16,110
Less than 12 months, Unrealized Loss	(15)	(267)
12 months or more, Fair Value	28,241	19,975
12 months or more, Unrealized Loss	(762)	(877)
Total, Fair Value	29,641	36,085
Total, Unrealized Loss	(777)	(1,144)
Collateralized mortgage obligations issued by non agencies
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	0	0
Less than 12 months, Unrealized Loss	0	0
12 months or more, Fair Value	0	468
12 months or more, Unrealized Loss	0	(16)
Total, Fair Value	0	468
Total, Unrealized Loss	0	(16)
Asset-backed security
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	0	0
Less than 12 months, Unrealized Loss	0	0
12 months or more, Fair Value	1,740	1,433
12 months or more, Unrealized Loss	(251)	(592)
Total, Fair Value	1,740	1,433
Total, Unrealized Loss	(251)	(592)
Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	1,485	3,185
Less than 12 months, Unrealized Loss	(15)	(65)
12 months or more, Fair Value	2,658	957
12 months or more, Unrealized Loss	(92)	(42)
Total, Fair Value	4,143	4,142
Total, Unrealized Loss	$ (107)	$ (107)

Investments - Roll-forward of O

Investments - Roll-forward of OTTI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Gross Other- Than- Temporary Impairments
Gross Other-Than-Temporary Impairments, Beginning Balance	$ (1,145)	$ (1,100)
Gross Other-Than-Temporary Impairments, Changes in market value on securities for which an OTTI was previously recognized	308	(47)
Gross Other-Than-Temporary Impairments, Principal received on OTTI security	33	2
Gross Other-Than-Temporary Impairments, Ending Balance	(804)	(1,145)
Other-Than- Temporary Impairments Included in Other Comprehensive Loss
Other-Than-Temporary Impairments Included in Other Comprehensive Loss, Beginning Balance	(592)	(547)
Other-Than-Temporary Impairments Included in Other Comprehensive Loss, Change in market value on a security for which an OTTI was previously recognized	308	(47)
Other-Than-Temporary Impairments Included in Other Comprehensive Loss, Principal received on OTTI security	33	2
Other-Than-Temporary Impairments Included in Other Comprehensive Loss, Ending Balance	(251)	(592)
Net Other-Than- Temporary Impairments Included in Retained Earnings (Deficit)
Net Other-Than Temporary Impairments Included in Retained Earnings (Deficit), Beginning Balance	(553)	(553)
Net Other-Than Temporary Impairments Included in Retained Earnings (Deficit), Change in market value on a security for which an OTTI was previously recognized	0	0
Net Other-Than Temporary Impairments Included in Retained Earnings (Deficit), Principal received on OTTI security	0	0
Net Other-Than Temporary Impairments Included in Retained Earnings (Deficit), Ending Balance	$ (553)	$ (553)

Investments - Other Investments

Investments - Other Investments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)Investment	Dec. 31, 2016USD ($)
Investments, Debt and Equity Securities [Abstract]
Number of investments accounted for under the cost method | Investment	2
Purchase of other investments	$ 227	$ 385
Investments accounted for under the cost method	$ 893	$ 666

Loans and Allowance for Loan 59

Loans and Allowance for Loan and Lease Losses - Components of Loan Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 1,064,630	$ 946,524
Deferred fee (income) costs, net	2,767	1,802
Allowance for loan and lease losses	(14,196)	(16,801)	$ (12,716)	$ (13,833)
Loans, net	$ 1,053,201	$ 931,525
Percentage of loan portfolio	100.00%	100.00%
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 394,493	$ 333,376
Allowance for loan and lease losses	$ (9,155)	$ (11,276)	(6,639)	(7,670)
Percentage of loan portfolio	37.10%	35.20%
Commercial real estate loans – owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 214,365	$ 214,420
Percentage of loan portfolio	20.10%	22.70%
Commercial real estate loans – all other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 228,090	$ 173,223
Percentage of loan portfolio	21.40%	18.30%
Residential mortgage loans – multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 114,302	$ 130,930
Percentage of loan portfolio	10.70%	13.80%
Residential mortgage loans – single family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 24,848	$ 34,527
Percentage of loan portfolio	2.30%	3.60%
Construction and land development loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 34,614	$ 18,485
Allowance for loan and lease losses	$ (650)	$ (343)	$ (282)	$ (296)
Percentage of loan portfolio	3.30%	2.00%
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 53,918	$ 41,563
Percentage of loan portfolio	5.10%	4.40%

Loans and Allowance for Loan 60

Loans and Allowance for Loan and Lease Losses - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Real estate loans pledged to secured borrowings obtained from Federal Home Loan Bank	$ 669,000,000	$ 527,000,000
Loan repurchases			$ 0
Period of loan loss history and industry loss factors used to determine historical losses	4 years
Loans greater than 90 days and accruing	$ 0	0
Impaired loans with no specific reserves	5,910,000	21,588,000
Impaired loans, impaired in prior year	3,100,000
Interest that would have been earned had impaired loans remained current in accordance with original terms	462,000	1,200,000	$ 899,000
Troubled debt restructurings, totals	1,300,000	8,900,000
Specific reserves on TDR's	7,000
Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings, totals	450,000
Performing | Commercial real estate - owner occupied and all others commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan repurchases	$ 30,100,000
Performing | Commercial real estate - multi-family mortgage and all other commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan repurchases		$ 85,800,000

Loans and Allowance for Loan 61

Loans and Allowance for Loan and Lease Losses - Activity in ALLL (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of year				$ 16,801				$ 12,716	$ 16,801	$ 12,716	$ 13,833
Charge offs									(4,735)	(17,049)	(2,927)
Recoveries									2,130	1,264	1,810
Provision	$ 0	$ 0	$ 0	0	$ 0	$ 10,730	$ 8,720	420	0	19,870	0
Balance at end of year	14,196				16,801				14,196	16,801	12,716
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of year				11,276				6,639	11,276	6,639	7,670
Charge offs									(4,124)	(15,390)	(2,643)
Recoveries									1,852	1,189	1,798
Provision									151	18,838	(186)
Balance at end of year	9,155				11,276				9,155	11,276	6,639
Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of year				4,226				5,109	4,226	5,109	5,133
Charge offs									(432)	(1,119)	0
Recoveries									72	1	4
Provision									(960)	235	(28)
Balance at end of year	2,906				4,226				2,906	4,226	5,109
Construction and land development loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of year				343				282	343	282	296
Charge offs									0	0	(85)
Recoveries									27	57	0
Provision									280	4	71
Balance at end of year	650				343				650	343	282
Consumer and Single Family Mortgages
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of year				642				686	642	686	734
Charge offs									(179)	(540)	(199)
Recoveries									179	17	8
Provision									401	479	143
Balance at end of year	1,043				642				1,043	642	686
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of year				$ 314				$ 0	314	0	0
Charge offs									0	0	0
Recoveries									0	0	0
Provision									128	314	0
Balance at end of year	$ 442				$ 314				$ 442	$ 314	$ 0

Loans and Allowance for Loan 62

Loans and Allowance for Loan and Lease Losses - Loan Balances and Related ALLL (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	$ 7	$ 2,042
Allowance for loans collectively evaluated for impairment	14,189	14,759
Total allowance for loans	14,196	16,801	$ 12,716	$ 13,833
Loans individually evaluated for impairment	6,360	24,897
Loans collectively evaluated for impairment	1,058,270	921,627
Total loans outstanding	1,064,630	946,524
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	7	2,042
Allowance for loans collectively evaluated for impairment	9,148	9,234
Total allowance for loans	9,155	11,276	6,639	7,670
Loans individually evaluated for impairment	3,672	20,330
Loans collectively evaluated for impairment	390,821	313,046
Total loans outstanding	394,493	333,376
Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	0	0
Allowance for loans collectively evaluated for impairment	2,906	4,226
Total allowance for loans	2,906	4,226	5,109	5,133
Loans individually evaluated for impairment	2,461	4,346
Loans collectively evaluated for impairment	554,296	514,227
Total loans outstanding	556,757	518,573
Land development loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	0	0
Allowance for loans collectively evaluated for impairment	650	343
Total allowance for loans	650	343	282	296
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	34,614	18,485
Total loans outstanding	34,614	18,485
Consumer and Single Family Mortgages
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	0	0
Allowance for loans collectively evaluated for impairment	1,043	642
Total allowance for loans	1,043	642	686	734
Loans individually evaluated for impairment	227	221
Loans collectively evaluated for impairment	78,539	75,869
Total loans outstanding	78,766	76,090
Unallocated
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	0	0
Allowance for loans collectively evaluated for impairment	442	314
Total allowance for loans	442	314	$ 0	$ 0
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	0	0
Total loans outstanding	$ 0	$ 0

Loans and Allowance for Loan 63

Loans and Allowance for Loan and Lease Losses - Summary of Delinquency Status of Loans by Portfolio Type (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 4,448,000	$ 26,184,000
Current	1,060,182,000	920,340,000
Total loans outstanding	1,064,630,000	946,524,000
Loans greater than 90 Days and Accruing	0	0
Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,387,000	7,880,000
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	936,000	3,355,000
Financing Receivables, 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,125,000	14,949,000
Commercial loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	3,512,000	21,001,000
Current	390,981,000	312,375,000
Total loans outstanding	394,493,000	333,376,000
Loans greater than 90 Days and Accruing	0	0
Commercial loans | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,387,000	7,055,000
Commercial loans | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial loans | Financing Receivables, 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,125,000	13,946,000
Commercial real estate loans – owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	3,619,000
Current	214,365,000	210,801,000
Total loans outstanding	214,365,000	214,420,000
Loans greater than 90 Days and Accruing	0	0
Commercial real estate loans – owner occupied | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	275,000
Commercial real estate loans – owner occupied | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	2,341,000
Commercial real estate loans – owner occupied | Financing Receivables, 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	1,003,000
Commercial real estate loans – all other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	936,000	1,526,000
Current	227,154,000	171,697,000
Total loans outstanding	228,090,000	173,223,000
Loans greater than 90 Days and Accruing	0	0
Commercial real estate loans – all other | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	512,000
Commercial real estate loans – all other | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	936,000	1,014,000
Commercial real estate loans – all other | Financing Receivables, 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential mortgage loans – multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Current	114,302,000	130,930,000
Total loans outstanding	114,302,000	130,930,000
Loans greater than 90 Days and Accruing	0	0
Residential mortgage loans – multi-family | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential mortgage loans – multi-family | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential mortgage loans – multi-family | Financing Receivables, 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential mortgage loans – single family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Current	24,848,000	34,527,000
Total loans outstanding	24,848,000	34,527,000
Loans greater than 90 Days and Accruing	0	0
Residential mortgage loans – single family | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential mortgage loans – single family | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential mortgage loans – single family | Financing Receivables, 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Land development loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Current	34,614,000	18,485,000
Total loans outstanding	34,614,000	18,485,000
Loans greater than 90 Days and Accruing	0	0
Land development loans | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Land development loans | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Land development loans | Financing Receivables, 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Consumer loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	38,000
Current	53,918,000	41,525,000
Total loans outstanding	53,918,000	41,563,000
Loans greater than 90 Days and Accruing	0	0
Consumer loans | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	38,000
Consumer loans | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Consumer loans | Financing Receivables, 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 0	$ 0

Loans and Allowance for Loan 64

Loans and Allowance for Loan and Lease Losses - Loans on Nonaccrual Status by Portfolio Type (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	$ 5,910	$ 24,897
Commercial loans
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	3,222	20,330
Commercial real estate loans – owner occupied
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	893	2,643
Commercial real estate loans – all other
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	1,568	1,703
Residential mortgage loans – single family
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	171	221
Consumer loans
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	$ 56	$ 0

Loans and Allowance for Loan 65

Loans and Allowance for Loan and Lease Losses - Summary of Loans by Portfolio Type and Internal Credit Quality Ratings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 1,064,630	$ 946,524
Increase (Decrease) in loan portfolios	118,106
Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,036,095	879,790
Increase (Decrease) in loan portfolios	156,305
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	17,387	14,734
Increase (Decrease) in loan portfolios	2,653
Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	10,782	48,681
Increase (Decrease) in loan portfolios	(37,899)
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	366	3,319
Increase (Decrease) in loan portfolios	(2,953)
Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans	394,493	333,376
Commercial loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	375,024	287,717
Increase (Decrease) in loan portfolios	87,307
Commercial loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	11,009	4,672
Increase (Decrease) in loan portfolios	6,337
Commercial loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	8,094	37,668
Increase (Decrease) in loan portfolios	(29,574)
Commercial loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	366	3,319
Increase (Decrease) in loan portfolios	(2,953)
Commercial real estate loans – owner occupied
Financing Receivable, Recorded Investment [Line Items]
Gross loans	214,365	214,420
Commercial real estate loans – owner occupied | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	207,094	197,497
Increase (Decrease) in loan portfolios	9,597
Commercial real estate loans – owner occupied | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	6,378	7,834
Increase (Decrease) in loan portfolios	(1,456)
Commercial real estate loans – owner occupied | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	893	9,089
Increase (Decrease) in loan portfolios	(8,196)
Commercial real estate loans – all other
Financing Receivable, Recorded Investment [Line Items]
Gross loans	228,090	173,223
Commercial real estate loans – all other | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	226,522	169,292
Increase (Decrease) in loan portfolios	57,230
Commercial real estate loans – all other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	2,228
Increase (Decrease) in loan portfolios	(2,228)
Commercial real estate loans – all other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,568	1,703
Increase (Decrease) in loan portfolios	(135)
Residential mortgage loans – multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	114,302	130,930
Residential mortgage loans – multi-family | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	114,302	130,930
Increase (Decrease) in loan portfolios	(16,628)
Residential mortgage loans – single family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	24,848	34,527
Residential mortgage loans – single family | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	24,677	34,306
Increase (Decrease) in loan portfolios	(9,629)
Residential mortgage loans – single family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	171	221
Increase (Decrease) in loan portfolios	(50)
Land development loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans	34,614	18,485
Land development loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	34,614	18,485
Increase (Decrease) in loan portfolios	16,129
Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans	53,918	41,563
Consumer loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	53,862	41,563
Increase (Decrease) in loan portfolios	12,299
Consumer loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	56	$ 0
Increase (Decrease) in loan portfolios	$ 56

Loans and Allowance for Loan 66

Loans and Allowance for Loan and Lease Losses - Nonaccrual Loans and Restructured Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Impaired loans:
Nonaccruing loans	$ 5,101	$ 15,966
Nonaccruing restructured loans	809	8,931
Accruing restructured loans	450	0
Total impaired loans	6,360	24,897
Impaired loans less than 90 days delinquent
Impaired loans:
Total impaired loans	$ 3,994	$ 9,948

Loans and Allowance for Loan 67

Loans and Allowance for Loan and Lease Losses - Additional Information with Respect to Impaired Loans, by Portfolio Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Recorded Investment, No allowance recorded	$ 5,910	$ 21,588
Recorded Investment, With allowance recorded	450	3,309
Total impaired loans	6,360	24,897
Unpaid Principal Balance, No allowance recorded	9,078	25,573
Unpaid Principal Balance, With allowance recorded	450	4,764
Unpaid Principal Balance	9,528	30,337
Related Allowance	7	2,042
Average Balance, With allowance recorded	13,272	22,287	$ 27,458
Average Balance, No allowance recorded	3,150	5,690	1,343
Average Balance	16,422	27,977	28,801
Interest Income Recognized, No allowance recorded	133	449	650
Interest Income Recognized, With allowance recorded	33	457	0
Interest Income Recognized	166	906	650
Commercial loans
Financing Receivable, Impaired [Line Items]
Recorded Investment, No allowance recorded	3,222	17,021
Recorded Investment, With allowance recorded	450	3,309
Total impaired loans	3,672	20,330
Unpaid Principal Balance, No allowance recorded	5,910	19,048
Unpaid Principal Balance, With allowance recorded	450	4,764
Unpaid Principal Balance	6,360	23,812
Related Allowance	7	2,042
Average Balance, With allowance recorded	10,178	13,686	13,455
Average Balance, No allowance recorded	3,150	4,728	528
Average Balance	13,328	18,414	13,983
Interest Income Recognized, No allowance recorded	128	437	178
Interest Income Recognized, With allowance recorded	33	457	0
Interest Income Recognized	161	894	178
Commercial real estate loans – owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment, No allowance recorded	893	2,643
Total impaired loans	893	2,643
Unpaid Principal Balance, No allowance recorded	945	4,335
Unpaid Principal Balance	945	4,335
Related Allowance	0	0
Average Balance, With allowance recorded	1,215	2,455	2,494
Average Balance, No allowance recorded	0	962	815
Average Balance	1,215	3,417	3,309
Interest Income Recognized, No allowance recorded	0	3	115
Interest Income Recognized, With allowance recorded	0	0	0
Interest Income Recognized	0	3	115
Commercial real estate loans – all other
Financing Receivable, Impaired [Line Items]
Recorded Investment, No allowance recorded	1,568	1,703
Total impaired loans	1,568	1,703
Unpaid Principal Balance, No allowance recorded	1,965	1,965
Unpaid Principal Balance	1,965	1,965
Related Allowance	0	0
Average Balance, With allowance recorded	1,616	4,413	6,256
Average Balance	1,616	4,413	6,256
Interest Income Recognized, No allowance recorded	0	0	337
Interest Income Recognized	0	0	337
Residential mortgage loans – multi-family
Financing Receivable, Impaired [Line Items]
Average Balance, With allowance recorded	0	350	451
Average Balance	0	350	451
Interest Income Recognized, No allowance recorded	0	0	13
Interest Income Recognized	0	0	13
Residential mortgage loans – single family
Financing Receivable, Impaired [Line Items]
Recorded Investment, No allowance recorded	171	221
Total impaired loans	171	221
Unpaid Principal Balance, No allowance recorded	185	225
Unpaid Principal Balance	185	225
Related Allowance	0	0
Average Balance, With allowance recorded	183	339	3,137
Average Balance	183	339	3,137
Interest Income Recognized, No allowance recorded	0	9	0
Interest Income Recognized	0	9	0
Consumer loans
Financing Receivable, Impaired [Line Items]
Recorded Investment, No allowance recorded	56	0
Total impaired loans	56	0
Unpaid Principal Balance, No allowance recorded	73	0
Unpaid Principal Balance	73	0
Related Allowance	0	0
Average Balance, With allowance recorded	80	173	0
Average Balance	80	173	0
Interest Income Recognized, No allowance recorded	5	0	0
Interest Income Recognized	5	0	0
Construction and land development loans
Financing Receivable, Impaired [Line Items]
Average Balance, With allowance recorded	0	871	1,665
Average Balance	0	871	1,665
Interest Income Recognized, No allowance recorded	0	0	7
Interest Income Recognized	$ 0	$ 0	$ 7

Loans and Allowance for Loan 68

Loans and Allowance for Loan and Lease Losses - Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)Loan	Dec. 31, 2016USD ($)Loan	Dec. 31, 2015USD ($)Loan
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	2	0	10
Pre-Modification Outstanding Recorded Investment	$ 1,779	$ 0	$ 9,250
Post Modification Outstanding Recorded Investment	$ 1,259	$ 0	$ 9,250
Performing
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	1	0	4
Pre-Modification Outstanding Recorded Investment	$ 450	$ 0	$ 724
Post Modification Outstanding Recorded Investment	$ 450	$ 0	$ 724
Nonperforming
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	1	0	6
Pre-Modification Outstanding Recorded Investment	$ 1,329	$ 0	$ 8,526
Post Modification Outstanding Recorded Investment	$ 809	$ 0	$ 8,526
Commercial loans | Performing
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	1	0	2
Pre-Modification Outstanding Recorded Investment	$ 450	$ 0	$ 147
Post Modification Outstanding Recorded Investment	$ 450	$ 0	$ 147
Commercial loans | Nonperforming
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	1	0	3
Pre-Modification Outstanding Recorded Investment	$ 1,329	$ 0	$ 2,634
Post Modification Outstanding Recorded Investment	$ 809	$ 0	$ 2,634
Commercial real estate loans – owner occupied
Financing Receivable, Modifications [Line Items]
TDRs that were modified within the preceding 12-month period which subsequently defaulted, number of loans | Loan	0	1	1
TDRs that were modified within the preceding 12-month period which subsequently defaulted, recorded investment	$ 0	$ 753	$ 4,114
Commercial real estate loans – owner occupied | Performing
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	0	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 177
Post Modification Outstanding Recorded Investment	$ 0	$ 0	$ 177
Commercial real estate loans – owner occupied | Nonperforming
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	0	0	2
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 1,778
Post Modification Outstanding Recorded Investment	$ 0	$ 0	$ 1,778
Commercial real estate loans – all other | Performing
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	0	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 400
Post Modification Outstanding Recorded Investment	$ 0	$ 0	$ 400
Commercial real estate loans – all other | Nonperforming
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	0	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 4,114
Post Modification Outstanding Recorded Investment	$ 0	$ 0	$ 4,114

Premises and Equipment - Major

Premises and Equipment - Major Classes of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Furniture and equipment	$ 6,549	$ 7,589
Leasehold improvements	23	206
Premises and Equipment, gross	6,572	7,795
Accumulated depreciation and amortization	(5,478)	(6,538)
Total	$ 1,094	$ 1,257

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 428	$ 485	$ 525
Continuing Operations
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 428	$ 485	$ 525

Deposits - Additional Informati

Deposits - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Interest bearing deposits with financial institutions	$ 186,010	$ 122,056
Weighted average percentage yields on deposits	1.12%	0.51%
Interest-bearing time deposits with financial institutions	$ 2,920	$ 3,669
Weighted average percentage yields on time deposits	1.07%	0.86%
Aggregate amount of time deposits in denominations of $250,000 or more	$ 94,100	$ 49,000

Deposits - Maturities of Time C

Deposits - Maturities of Time Certificates of Deposit (Details) $ in Thousands	Dec. 31, 2017USD ($)
Banking and Thrift [Abstract]
2,018	$ 59,802
2,019	32,649
2,020	760
2,021	0
2022 and beyond	928
Total	$ 94,139

Borrowings and Contractual Ob73

Borrowings and Contractual Obligations - Borrowings (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
FHLB advances—short-term	$ 40,000,000	$ 15,000,000
Other borrowings—short-term	866,000	0
Short-term Debt	40,866,000	15,000,000
FHLB advances—long-term	0	0
Total borrowings	$ 40,866,000	$ 15,000,000
Other borrowings - short term
Short-term Debt [Line Items]
Interest Rate	15.00%

Borrowings and Contractual Ob74

Borrowings and Contractual Obligations Borrowings and Contractual Obligations - Schedule of FHBL Borrowings (Details) - FHLB	Dec. 31, 2017USD ($)
Debt Instrument [Line Items]
weighted-average annualized interest rate	1.65%
1.48% due March 1, 2018
Debt Instrument [Line Items]
Principal Amounts	$ 10,000,000
Interest Rate	1.48%
1.62% due June 1, 2018
Debt Instrument [Line Items]
Principal Amounts	$ 10,000,000
Interest Rate	1.62%
1.72% due September 4, 2018
Debt Instrument [Line Items]
Principal Amounts	$ 10,000,000
Interest Rate	1.72%
1.77% due December 3, 2018
Debt Instrument [Line Items]
Principal Amounts	$ 10,000,000
Interest Rate	1.77%

Borrowings and Contractual Ob75

Borrowings and Contractual Obligations - Additional Information (Details)	12 Months Ended
	Dec. 31, 2017USD ($)trust	Dec. 31, 2016USD ($)
Debt Disclosure [Line Items]
Unused borrowing capacity with FHLB	$ 285,000,000	$ 272,000,000
Highest amount of borrowings outstanding from FHLB	40,900,000	15,000,000
FHLB advances—short-term		15,000,000
FHLB advances—long-term	$ 0	0
Number of unconsolidated subsidiary investments | trust	2
Debentures qualified as Tier I capital, for regulatory purposes	$ 17,000,000	$ 17,000,000
Junior subordinated debentures
Debt Disclosure [Line Items]
Number of unconsolidated subsidiary investments | trust	2
Maximum period to defer interest payments	5 years
Weighted average
Debt Disclosure [Line Items]
Borrowings for FHLB, annualized interest rate		0.55%
Residential mortgage and other real estate loans
Debt Disclosure [Line Items]
Fair value of securities and loans pledged as collateral of FHLB Borrowings	$ 669,000,000

Borrowings and Contractual Ob76

Borrowings and Contractual Obligations - Terms of Debentures Remained Outstanding (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Principal Amount	$ 17,527	$ 17,527
Junior subordinated debentures
Debt Instrument [Line Items]
Principal Amount	17,527	17,527
Junior subordinated debentures | September 2002
Debt Instrument [Line Items]
Principal Amount	$ 7,217	$ 7,217
Interest rate, spread on variable rate	3.40%	3.40%
Junior subordinated debentures | October 2004
Debt Instrument [Line Items]
Principal Amount	$ 10,310	$ 10,310
Interest rate, spread on variable rate	2.00%	2.00%

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Board of Directors and executive officers
Related Party Transaction [Line Items]
Deposits by related party	$ 272	$ 164

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Net deferred tax assets	$ 0				$ 0				$ 0	$ 0	$ 17,600,000
Income tax expense (benefit)	(241,000)	$ 37,000	$ 64,000	$ 49,000	(159,000)	$ 20,352,000	$ (3,559,000)	$ 198,000	(91,000)	16,832,000	(11,551,000)
Net operating loss carry forward	9,754,000				13,410,000				9,754,000	$ 13,410,000	$ 8,300,000
Net operating loss carryforward remaining years											17 years
Cumulative loss period											3 years
Expected income tax expense rate										41.00%
Valuation allowance	15,937,000	$ 21,700,000			25,004,000				15,937,000	$ 25,004,000
Operating Loss Carryforwards [Line Items]
Unrecognized interest expense									0	0	$ 0
Unrecognized accrued interest and penalties	0				$ 0				0	$ 0	$ 0
Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	30,553,000								30,553,000
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 55,955,000								$ 55,955,000

Income Taxes - Components of In

Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current taxes:
Federal									$ (125)	$ 0	$ 5
State									34	(5)	4
Total current taxes									(91)	(5)	9
Deferred taxes:
Federal									0	10,044	(8,490)
State									0	6,793	(3,070)
Total deferred taxes									0	16,837	(11,560)
Total income tax (benefit) expense	$ (241)	$ 37	$ 64	$ 49	$ (159)	$ 20,352	$ (3,559)	$ 198	$ (91)	$ 16,832	$ (11,551)

Income Taxes - Differences Betw

Income Taxes - Differences Between Statutory Federal Income Tax Rate and Effective Tax Rates (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Federal income tax based on statutory rate	34.00%	34.00%	34.00%
State franchise tax net of federal income tax benefit	7.20%	7.20%	7.10%
Permanent differences	(0.40%)	0.00%	0.00%
Other	1.40%	(0.10%)	3.90%
Valuation allowance	(43.10%)	(135.60%)	(1343.50%)
Total effective tax rate	(0.90%)	(94.50%)	(1298.50%)

Income Taxes - Components of Ne

Income Taxes - Components of Net Deferred Tax Asset (Details) - USD ($)	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred tax asset:
Allowance for loan and lease losses	$ 4,207,000		$ 6,932,000
Other than temporary impairment on securities	56,000		78,000
Deferred compensation	693,000		1,033,000
Litigation reserve	131,000		0
Other accrued expenses	927,000		2,075,000
Charitable contributions	241,000		244,000
Reserve for unfunded commitments	103,000		144,000
Tax credits	60,000		158,000
Net operating loss carry forward	9,754,000		13,410,000	$ 8,300,000
Stock based compensation	363,000		747,000
Depreciation and amortization	0		166,000
Unrealized losses on securities and deferred compensation	338,000		758,000
Total deferred tax assets	16,873,000		25,745,000
Deferred tax liabilities:
Depreciation and amortization	(133,000)		0
Other	(803,000)		(741,000)
Total deferred tax liabilities	(936,000)		(741,000)
Valuation allowance	(15,937,000)	$ (21,700,000)	(25,004,000)
Total net deferred tax asset	$ 0		$ 0	$ 17,600,000

Income Taxes - Summary of Net O

Income Taxes - Summary of Net Operating Loss Carryforwards (Details) $ in Thousands	Dec. 31, 2017USD ($)
Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 30,553
Federal | 2008
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	0
Federal | 2009
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	0
Federal | 2010
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	0
Federal | 2012
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	852
Federal | 2013
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	14,977
Federal | 2015
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	288
Federal | 2016
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	14,436
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	55,955
State | 2008
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	4,608
State | 2009
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	21,324
State | 2010
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	5,258
State | 2012
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	774
State | 2013
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	8,967
State | 2015
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	571
State | 2016
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 14,453

Stock-Based Employee Compensa83

Stock-Based Employee Compensation Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		12 Months Ended
	May 31, 2013	May 31, 2010	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)			792,577	1,066,914	838,696	1,257,390
Number of options exercised (in shares)			205,970	97,292	296,100
Aggregate intrinsic value of options exercised			$ 405	$ 249	$ 556
Fair value of options vested			401	311	655
Aggregate intrinsic values of options outstanding and exercisable			$ 1,400	837
Nonvested awards, expected weighted average recognition period (in years)			1 year 7 months 10 days
Aggregate amounts of stock based compensation expense, net of taxes			$ 796	$ 1,000	$ 1,200
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of restricted stock vested (in shares)			69,667	67,456	80,709
Shares granted (in shares)			40,907	121,775	98,829
Shares granted, average grant date fair value (in dollars per share)			$ 8.02	$ 6.79	$ 7.11
Employees | Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, restricted shares and SARs, vesting period (in years)			3 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price per share of common stock as percentage of fair market value of shares on respective grant dates of stock options			100.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, restricted shares and SARs, vesting period (in years)			5 years
Options and SARs, terms after date of grant (in years)			10 years
2010 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)		400,000	1,255,568
Additional shares authorized (in shares)	800,000
Maximum number of shares available for grant, percent of common stock outstanding			5.00%
2010 Incentive Plan | Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, restricted shares and SARs, vesting period (in years)			3 years
Previously Approved Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized (in shares)		158,211
Options outstanding (in shares)			141,550

Stock-Based Employee Compensa84

Stock-Based Employee Compensation Plans - Weighted Average Assumptions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of options granted during period (in dollars per share)	$ 2.84	$ 2.75	$ 3.13
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	33.00%	38.00%	44.00%
Risk-free interest rate	1.98%	1.70%	1.82%
Expected dividends	0.00%	0.00%	0.00%
Expected term (years)	5 years 7 months 25 days	6 years 3 months	6 years
Weighted average fair value of options granted during period (in dollars per share)	$ 2.84	$ 2.78	$ 2.81

Stock-Based Employee Compensa85

Stock-Based Employee Compensation Plans - Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Number of Shares
Outstanding, beginning of period (in shares)	1,066,914	838,696	1,257,390
Granted (in shares)	3,700	402,051	112,828
Exercised (in shares)	(205,970)	(97,292)	(296,100)
Forfeited/Canceled (in shares)	(72,067)	(76,541)	(235,422)
Outstanding, end of period (in shares)	792,577	1,066,914	838,696
Options exercisable, end of period (in shares)	537,229	604,970	622,770
Options vested, end of period (in shares)	537,229	604,970	622,770
Weighted Average Exercise Price Per Share
Outstanding, beginning of period (in dollars per share)	$ 6.35	$ 6.20	$ 6.51
Granted (in dollars per share)	8.21	6.89	7.09
Exercised (in dollars per share)	5.89	4.66	5.15
Forfeited/Canceled (in dollars per share)	7.06	9.74	9.59
Outstanding, end of period (in dollars per share)	6.41	6.35	6.20
Options exercisable, end of period (in dollars per share)	6.17	5.95	6.06
Options vested, end of period (in dollars per share)	$ 6.17	$ 5.95	$ 6.06

Stock-Based Employee Compensa86

Stock-Based Employee Compensation Plans - Additional Information Regarding Vested and Unvested Options Outstanding (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vested (in shares)	537,229	604,970	622,770
Options unvested (in shares)	255,348	461,944	215,926	468,504
Options outstanding, weighted average exercise price (in dollars per share)	$ 6.41	$ 6.35	$ 6.20	$ 6.51
Options outstanding, weighted average remaining contractual life (years)	6 years 5 months 5 days
Options exercisable (in shares)	537,229	604,970	622,770
Options exercisable, weighted average exercise price (in dollars per share)	$ 6.17	$ 5.95	$ 6.06
Weighted average remaining contractual life of options exercisable	5 years 8 months 5 days
$2.97 – $3.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option outstanding, exercise price, lower limit (in dollars per share)	$ 2.97
Option outstanding, exercise price, upper limit (in dollars per share)	$ 3.99
Options vested (in shares)	51,003
Options unvested (in shares)	0
Options outstanding, weighted average exercise price (in dollars per share)	$ 3.50
Options outstanding, weighted average remaining contractual life (years)	2 years 9 months 2 days
Options exercisable (in shares)	51,003
Options exercisable, weighted average exercise price (in dollars per share)	$ 3.50
$4.00 – $4.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option outstanding, exercise price, lower limit (in dollars per share)	4
Option outstanding, exercise price, upper limit (in dollars per share)	$ 4.99
Options vested (in shares)	16,000
Options unvested (in shares)	0
Options outstanding, weighted average exercise price (in dollars per share)	$ 4.34
Options outstanding, weighted average remaining contractual life (years)	3 years 3 months 20 days
Options exercisable (in shares)	16,000
Options exercisable, weighted average exercise price (in dollars per share)	$ 4.34
$5.00– $5.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option outstanding, exercise price, lower limit (in dollars per share)	5
Option outstanding, exercise price, upper limit (in dollars per share)	$ 5.99
Options vested (in shares)	30,000
Options unvested (in shares)	0
Options outstanding, weighted average exercise price (in dollars per share)	$ 5.30
Options outstanding, weighted average remaining contractual life (years)	5 years 5 months 17 days
Options exercisable (in shares)	30,000
Options exercisable, weighted average exercise price (in dollars per share)	$ 5.30
$6.00– $6.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option outstanding, exercise price, lower limit (in dollars per share)	6
Option outstanding, exercise price, upper limit (in dollars per share)	$ 6.99
Options vested (in shares)	366,385
Options unvested (in shares)	159,102
Options outstanding, weighted average exercise price (in dollars per share)	$ 6.60
Options outstanding, weighted average remaining contractual life (years)	6 years 6 months
Options exercisable (in shares)	366,385
Options exercisable, weighted average exercise price (in dollars per share)	$ 6.51
$7.00-$8.06
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option outstanding, exercise price, lower limit (in dollars per share)	7
Option outstanding, exercise price, upper limit (in dollars per share)	$ 8.06
Options vested (in shares)	73,841
Options unvested (in shares)	96,246
Options outstanding, weighted average exercise price (in dollars per share)	$ 7.11
Options outstanding, weighted average remaining contractual life (years)	7 years 9 months 12 days
Options exercisable (in shares)	73,841
Options exercisable, weighted average exercise price (in dollars per share)	$ 7.08

Stock-Based Employee Compensa87

Stock-Based Employee Compensation Plans - Summary of Status of Unvested Options Outstanding and Weighted Average Grant Date Fair Values (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Number of Shares Subject to Options
Unvested at the beginning of the year (in shares)	461,944	215,926	468,504
Granted (in shares)	3,700	402,051	112,828
Vested (in shares)	(141,829)	(108,820)	(248,406)
Forfeited/Canceled (in shares)	(68,467)	(47,213)	(117,000)
Unvested at the end of the year (in shares)	255,348	461,944	215,926
Weighted Average Grant Date Fair Value
Unvested at the beginning of the year (in dollars per share)	$ 2.79	$ 2.93	$ 2.68
Granted (in dollars per share)	2.84	2.75	3.13
Vested (in dollars per share)	2.83	2.86	2.63
Forfeited/Canceled (in dollars per share)	2.68	2.88	2.78
Unvested at the end of the year (in dollars per share)	$ 2.80	$ 2.79	$ 2.93

Stock-Based Employee Compensa88

Stock-Based Employee Compensation Plans - Restricted Stock Activity (Details) - Restricted stock - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Number of Shares
Outstanding at the beginning of the year (in shares)	151,298	129,283	141,254
Granted (in shares)	40,907	121,775	98,829
Vested (in shares)	(69,667)	(67,456)	(80,709)
Forfeited (in shares)	(19,030)	(32,304)	(30,091)
Outstanding at the end of the year (in shares)	103,508	151,298	129,283
Average Grant Date Fair Value
Outstanding, at beginning of year (in dollars per share)	$ 6.84	$ 6.75	$ 6.29
Granted (in dollars per share)	8.02	6.79	7.11
Vested (in dollars per share)	6.80	6.68	6.48
Forfeited (in dollars per share)	6.82	6.64	6.44
Outstanding, at end of year (in dollars per share)	$ 7.33	$ 6.84	$ 6.75

Stock-Based Employee Compensa89

Stock-Based Employee Compensation Plans - Compensation Expense Expected to be Recognized (Details) $ in Thousands	Dec. 31, 2017USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2,018	$ 524
2,019	138
2,020	70
2,021	50
2022 and beyond	21
Total	803
Estimated Stock Based Compensation Expense Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2,018	313
2,019	65
2,020	22
2,021	11
2022 and beyond	1
Total	412
Estimated Stock Based Compensation Expense Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2,018	211
2,019	73
2,020	48
2,021	39
2022 and beyond	20
Total	$ 391

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Details)	12 Months Ended
	Dec. 31, 2017USD ($)Installmentyr	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Retirement Benefits [Abstract]
Expenses relating to 401(k) contributions to employees	$ 248,000	$ 342,000	$ 164,000
Minimum age requirement to be eligible for SERP | yr	65
Number of monthly retirement payments | Installment	180
Retirement payment amount as percentage of average monthly base salary	60.00%
Number of years after reaching age 65 to receive monthly retirement payments	3 years
Defined expected benefits to be paid in next five years	$ 1,500,000
Defined expected benefits to be paid from year 2022 to 2026	1,500,000
Benefits expected to be recognized in net periodic benefit cost in next year	$ 130,802

Employee Benefit Plans - Change

Employee Benefit Plans - Changes in Projected Benefit Obligations under Supplemental Retirement Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Change in benefit obligation:
Benefit obligation at beginning of period	$ 2,511	$ 2,667	$ 2,815
Service cost	0	0	0
Interest cost	141	150	159
Actuarial loss/(gain)	0	0	0
(Benefits paid)	(307)	(306)	(307)
Benefit obligation at end of period	2,345	2,511	2,667
Amounts recognized in the Statement of Financial Condition
Unfunded accrued SERP liability—current	(299)	(299)	(299)
Unfunded accrued SERP liability—noncurrent	(2,046)	(2,212)	(2,368)
Total unfunded accrued SERP liability	(2,345)	(2,511)	(2,667)
Net amount recognized in accumulated other comprehensive income
Prior service cost/(benefit)	0	0	0
Net actuarial loss/(gain)	0	0	0
Total net amount recognized in accumulated other comprehensive income	0	0	0
Accumulated benefit obligation	2,345	2,511	2,667
Service cost	0	0	0
Interest cost	141	150	159
Amortization of prior service cost/(benefit)	0	0	0
Amortization of net actuarial loss/(gain)	0	0	0
Net periodic SERP cost	$ 141	$ 150	$ 159

Earnings Per Share ("EPS") - Co

Earnings Per Share ("EPS") - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Numerator:
Net income (loss) from continuing operations									$ 10,449	$ (34,643)	$ 12,441
Dividends on preferred stock									0	0	(927)
Inducements for exchange of the preferred stock									0	0	(512)
Net income (loss) allocable to common shareholders	$ 2,412	$ 3,756	$ 2,501	$ 1,781	$ 309	$ (30,526)	$ (4,710)	$ 284	$ 10,449	$ (34,643)	$ 11,002
Denominator:
Basic weighted average outstanding shares of common stock (in shares)									23,180,542	22,958,644	20,516,575
Dilutive effect of employee stock options and contingently issuable shares (in shares)									132,000	0	159,000
Diluted weighted average common stock and common stock equivalents (in shares)									23,312,292	22,958,644	20,675,279
Basic income (loss) per common share:
Net income (loss) available to common shareholders (in dollars per common share)	$ 0.10	$ 0.16	$ 0.11	$ 0.08	$ 0.01	$ (1.33)	$ (0.21)	$ 0.01	$ 0.45	$ (1.51)	$ 0.54
Diluted income (loss) per common share:
Net income (loss) available to common shareholders (in dollars per common share)	$ 0.10	$ 0.16	$ 0.11	$ 0.08	$ 0.01	$ (1.33)	$ (0.21)	$ 0.01	$ 0.45	$ (1.51)	$ 0.53

Earnings Per Share ("EPS") - An

Earnings Per Share ("EPS") - Anti-dilutive Securities (Details) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares not included in computation of earnings per share (in shares)	200,824	1,038,317	360,600

Shareholders' Equity - Preferre

Shareholders' Equity - Preferred Stock and Warrants and Dividends (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Shares of Common Stock eligible for purchase (in shares)	761,278
Conversion of stock, shares issued (in shares)	3,009,148
Assets		$ 1,322,604	$ 1,140,689
Series B Convertible 8.4% Noncumulative Preferred Stock, 300,000 shares authorized; 0 issued and outstanding at December 31, 2017 and December 31, 2016; liquidation preference $100 per share, plus accumulated but undeclared dividends
Class of Stock [Line Items]
Exchange of Preferred Stock to common stock (in shares)	112,000
Dividends rate	8.40%
Series C 8.4% Noncumulative Preferred Stock, 300,000 shares authorized; 0 issued and outstanding at December 31, 2017 and December 31, 2016; liquidation preference $100 per share plus accumulated but undeclared dividends
Class of Stock [Line Items]
Exchange of Preferred Stock to common stock (in shares)	35,225
Dividends rate	8.40%
Shares issued as stock dividends (in shares)		0	0	5,917
Subsidiaries
Class of Stock [Line Items]
Assets		$ 1,800

Shareholders' Equity - Accumula

Shareholders' Equity - Accumulated Other Comprehensive Income, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ 99,719	$ 133,916	$ 119,281
Other comprehensive (loss) income, net of tax	699	(1,032)	(118)
Ending Balance	112,876	99,719	133,916
Unrealized Gain (Loss) on Securities Available-for-Sale, net of tax
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(1,842)	(810)	(692)
Other comprehensive income (loss) before reclassifications	695	(1,032)	(118)
Amounts reclassified from accumulated other comprehensive income, net of tax	4	0	0
Other comprehensive (loss) income, net of tax	699	(1,032)	(118)
Ending Balance	(1,143)	(1,842)	(810)
Accumulated Other Comprehensive Income, Net
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(1,842)	(810)	(692)
Other comprehensive income (loss) before reclassifications	695	(1,032)	(118)
Amounts reclassified from accumulated other comprehensive income, net of tax	4	0	0
Other comprehensive (loss) income, net of tax	699	(1,032)	(118)
Ending Balance	$ (1,143)	$ (1,842)	$ (810)

Shareholders' Equity - Accumu96

Shareholders' Equity - Accumulated Other Comprehensive Income, Net, Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Unrealized Gain (Loss) on Securities Available-for-Sale, net of tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income before reclassifications, tax provision	$ 0	$ 739	$ 81
Other comprehensive income, tax provision	0	739	81
Accumulated Other Comprehensive Income, Net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income before reclassifications, tax provision	0	739	81
Other comprehensive income, tax provision	$ 0	$ 739	$ 81

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Commitment And Contingencies [Line Items]
Rent expense	$ 2,400,000	$ 2,600,000	$ 2,800,000
Recoveries Of Provision For Loan Repurchases Reserve	254,000	60,000
Repurchased loans	0	0	$ 619,000
Loss reserve for unfunded loan commitments	$ 350,000	350,000
Minimum
Commitment And Contingencies [Line Items]
Non-cancelable operating leases, escalation clauses rate	2.00%
Maximum
Commitment And Contingencies [Line Items]
Non-cancelable operating leases, escalation clauses rate	6.00%
Letter of Credit
Commitment And Contingencies [Line Items]
Maximum exposure amount	$ 295,000,000	$ 317,000,000

Commitments and Contingencies98

Commitments and Contingencies - Future Minimum Non-Cancelable Lease Commitments (Details) $ in Thousands	Dec. 31, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,018	$ 2,125
2,019	2,195
2,020	1,105
2,021	315
2022 and beyond	655
Total	$ 6,395

Commitments and Contingencies99

Commitments and Contingencies - Repurchase Reserves (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Repurchase Reserve [Roll Forward]
Beginning balance	$ 254	$ 314
Provision for repurchases	(254)	(60)
Settlements	0	0
Total repurchases reserve	$ 0	$ 254

Capital_Operating Plans - Actua

Capital/Operating Plans - Actual Amount and Capital Ratios of Company and Bank (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Tier 1 Capital to Average Assets
Tier 1 Capital to Average Assets, Actual Capital Amount	$ 17,000	$ 17,000
Company
Total Capital to Risk Weighted Assets
Total Capital to Risk Weighted Assets, Actual Capital Amount	$ 147,551	$ 131,043
Total Capital to Risk Weighted Assets, Actual Capital Ratio	12.20%	12.80%
Total Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	$ 102,594	$ 88,230
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, Actual Capital Amount	$ 133,005	$ 118,199
Tier 1 Capital to Risk Weighted Asset, Actual Capital Ratio	11.00%	11.60%
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	$ 78,804	$ 67,771
Tier 1 Capital to Average Assets
Tier 1 Capital to Average Assets, Actual Capital Amount	$ 133,005	$ 118,199
Tier 1 Capital to Average Asset, Actual Capital Ratio	10.50%	10.50%
Tier 1 Capital to Average Assets, For Capital adequacy Purposes, Amount	$ 49,889	$ 44,923
Bank
Total Capital to Risk Weighted Assets
Total Capital to Risk Weighted Assets, Actual Capital Amount	$ 137,581	$ 114,412
Total Capital to Risk Weighted Assets, Actual Capital Ratio	11.60%	11.40%
Total Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	$ 102,386	$ 86,566
Total Capital to Risk Weighted Assets, To be Categorized as Well Capitalized, Amount	118,709	100,366
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, Actual Capital Amount	$ 123,035	$ 101,807
Tier 1 Capital to Risk Weighted Asset, Actual Capital Ratio	10.40%	10.10%
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	$ 78,645	$ 66,492
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Amount	94,967	80,293
Tier 1 Capital to Average Assets
Tier 1 Capital to Average Assets, Actual Capital Amount	$ 123,035	$ 101,807
Tier 1 Capital to Average Asset, Actual Capital Ratio	9.90%	9.20%
Tier 1 Capital to Average Assets, For Capital adequacy Purposes, Amount	$ 49,801	$ 44,360
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Amount	$ 62,251	$ 55,450
Minimum | Company
Total Capital to Risk Weighted Assets
Total Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	8.625%	8.625%
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	6.625%	6.625%
Tier 1 Capital to Average Assets
Tier 1 Capital to Average Assets, For Capital adequacy Purposes, Ratio	4.00%	4.00%
Minimum | Bank
Total Capital to Risk Weighted Assets
Total Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	8.625%	8.625%
Total Capital to Risk Weighted Assets, To be Categorized as Well Capitalized, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	6.625%	6.625%
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Ratio	8.00%	8.00%
Tier 1 Capital to Average Assets
Tier 1 Capital to Average Assets, For Capital adequacy Purposes, Ratio	4.00%	4.00%
Tier 1 Capital to Average Assets, To be Categorized As Well Capitalized, Ratio	5.00%	5.00%
Common Equity | Company
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, Actual Capital Amount	$ 116,005	$ 101,199
Tier 1 Capital to Risk Weighted Asset, Actual Capital Ratio	9.60%	9.90%
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	$ 60,962	$ 52,427
Common Equity | Bank
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, Actual Capital Amount	$ 123,035	$ 101,807
Tier 1 Capital to Risk Weighted Asset, Actual Capital Ratio	10.40%	10.10%
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	$ 60,838	$ 51,438
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Amount	$ 77,161	$ 65,238
Common Equity | Minimum | Company
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	5.125%	5.125%
Common Equity | Minimum | Bank
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	5.125%	5.125%
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Ratio	6.50%	6.50%

Parent Company Only Informat101

Parent Company Only Information - Condensed Statements of Financial Condition (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assets:
Due from banks and interest-bearing deposits with financial institutions	$ 186,010	$ 122,056
Other assets	15,464	11,041
Total assets	1,322,604	1,140,689
Liabilities and shareholders’ equity:
Shareholders’ equity	112,876	99,719	$ 133,916	$ 119,281
Total liabilities and shareholders’ equity	1,322,604	1,140,689
Parent Company
Assets:
Due from banks and interest-bearing deposits with financial institutions	13,916	8,621
Investment in subsidiaries	124,550	108,088
Other assets	55	630
Total assets	138,521	117,339
Liabilities and shareholders’ equity:
Liabilities	76	93
Junior subordinated debentures	17,527	17,527
Shareholders’ equity	120,918	99,719
Total liabilities and shareholders’ equity	$ 138,521	$ 117,339

Parent Company Only Informat102

Parent Company Only Information - Condensed Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Interest income	$ 13,812	$ 14,025	$ 12,132	$ 11,604	$ 10,613	$ 10,598	$ 9,835	$ 9,954	$ 51,573	$ 41,000	$ 38,797
Interest expense	(2,542)	(2,020)	(1,736)	(1,533)	(1,462)	(1,409)	(1,355)	(1,251)	(7,831)	(5,477)	(5,269)
Income tax (expense) benefit	$ 241	$ (37)	$ (64)	$ (49)	$ 159	$ (20,352)	$ 3,559	$ (198)	91	(16,832)	11,551
Net income (loss)									10,449	(34,643)	12,441
Parent Company
Condensed Financial Statements, Captions [Line Items]
Interest income									3	2	9
Interest expense									(670)	(582)	(507)
Other income									24	17	28
Other expenses									(1,045)	(1,012)	(984)
Equity in undistributed earnings (loss) of subsidiaries									12,195	(33,075)	13,895
Income tax (expense) benefit									(58)	7	0
Net income (loss)									$ 10,449	$ (34,643)	$ 12,441

Parent Company Only Informat103

Parent Company Only Information - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows From Operating Activities:
Net income (loss)	$ 10,449	$ (34,643)	$ 12,441
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Net decrease (increase) in other assets	(4,376)	144	(561)
Net decrease in deferred taxes	0	16,837	(11,562)
Stock-based compensation expense	796	1,039	1,234
Net increase (decrease) in interest payable	196	(54)	33
Net (decrease) increase in other liabilities	4,603	91	80
Net cash used in operating activities	10,583	4,346	1,928
Cash Flows From Investing Activities:
Net decrease in loans	(120,205)	(101,331)	(25,209)
Net cash used in investing activities	(115,526)	(92,337)	(14,360)
Cash Flows From Financing Activities:
Payments for exchange of preferred stock for common stock	0	0	(324)
Common stock options exercised	1,213	455	1,511
Net cash provided by financing activities	164,306	112,915	(50,782)
Net increase (decrease) in cash and cash equivalents	59,363	24,924	(63,214)
Cash and Cash Equivalents, beginning of period	138,845	113,921	177,135
Cash and Cash Equivalents, end of period	198,208	138,845	113,921
Parent Company
Cash Flows From Operating Activities:
Net income (loss)	10,449	(34,643)	12,441
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Net decrease (increase) in other assets	47	(19)	(7)
Net decrease in deferred taxes	0	38	0
Stock-based compensation expense	796	1,039	1,233
Undistributed (income) loss of subsidiary	(12,195)	33,075	(13,895)
Net increase (decrease) in interest payable	11	(71)	81
Net (decrease) increase in other liabilities	(26)	27	0
Net cash used in operating activities	(918)	(554)	(147)
Cash Flows From Investing Activities:
Net decrease in loans	0	0	0
Net cash used in investing activities	0	0	0
Cash Flows From Financing Activities:
Payments for exchange of preferred stock for common stock	0	0	(324)
Common stock options exercised	1,213	455	1,511
Tax effect included in stockholders equity of restricted stock vesting	0	(16)	(109)
Return of capital from subsidiaries	15,000	4,000	0
Capital contribution to subsidiaries	(10,000)	(5,000)	0
Net cash provided by financing activities	6,213	(561)	1,078
Net increase (decrease) in cash and cash equivalents	5,295	(1,115)	931
Cash and Cash Equivalents, beginning of period	8,621	9,736	8,805
Cash and Cash Equivalents, end of period	$ 13,916	$ 8,621	$ 9,736

Business Segment Information -

Business Segment Information - Additional Information (Details) - Segment	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting [Abstract]
Reportable business segments	1	1	1
Non-reportable segments	1	1	1
Reselling period of originated mortgage loans (in days)	30 days

Business Segment Information105

Business Segment Information - Net Interest Income and Noninterest Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net interest income	$ 11,270	$ 12,005	$ 10,396	$ 10,071	$ 9,151	$ 9,189	$ 8,480	$ 8,703	$ 43,742	$ 35,523	$ 33,528
Total noninterest income	1,009	$ 964	$ 1,431	$ 970	265	$ 1,054	$ 864	$ 754	4,374	2,937	2,686
Assets	1,322,604				1,140,689				1,322,604	1,140,689
Operating segment | Commercial
Segment Reporting Information [Line Items]
Net interest income									42,995	36,044	33,932
Total noninterest income									3,948	3,438	2,658
Assets	1,320,454				1,126,890				1,320,454	1,126,890
Other
Segment Reporting Information [Line Items]
Net interest income									747	(521)	(404)
Total noninterest income									426	(501)	$ 28
Assets	$ 2,150				$ 13,799				$ 2,150	$ 13,799

Unaudited Quarterly Informat106

Unaudited Quarterly Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Total interest income	$ 13,812	$ 14,025	$ 12,132	$ 11,604	$ 10,613	$ 10,598	$ 9,835	$ 9,954	$ 51,573	$ 41,000	$ 38,797
Total interest expense	2,542	2,020	1,736	1,533	1,462	1,409	1,355	1,251	7,831	5,477	5,269
Net interest income	11,270	12,005	10,396	10,071	9,151	9,189	8,480	8,703	43,742	35,523	33,528
Provision for loan and lease losses	0	0	0	0	0	10,730	8,720	420	0	19,870	0
Net interest income after provision for loan and lease losses	11,270	12,005	10,396	10,071	9,151	(1,541)	(240)	8,283	43,742	15,653	33,528
Total noninterest income	1,009	964	1,431	970	265	1,054	864	754	4,374	2,937	2,686
Total noninterest expense	10,108	9,176	9,262	9,211	9,266	9,687	8,893	8,555	37,758	36,401	35,324
Income (loss) before income taxes	2,171	3,793	2,565	1,830	150	(10,174)	(8,269)	482	10,358	(17,811)	890
Income tax (benefit) provision	(241)	37	64	49	(159)	20,352	(3,559)	198	(91)	16,832	(11,551)
Net income (loss) allocable to common shareholders	$ 2,412	$ 3,756	$ 2,501	$ 1,781	$ 309	$ (30,526)	$ (4,710)	$ 284	$ 10,449	$ (34,643)	$ 11,002
Per share data-basic:
Net income (loss) available to common shareholders (in dollars per common share)	$ 0.10	$ 0.16	$ 0.11	$ 0.08	$ 0.01	$ (1.33)	$ (0.21)	$ 0.01	$ 0.45	$ (1.51)	$ 0.54
Per share data-diluted:
Net income (loss) available to common shareholders (in dollars per common share)	$ 0.10	$ 0.16	$ 0.11	$ 0.08	$ 0.01	$ (1.33)	$ (0.21)	$ 0.01	$ 0.45	$ (1.51)	$ 0.53