Summary Of Significant Accounting Policies (Policy)	9 Months Ended
Sep. 30, 2015
Summary Of Significant Accounting Policies [Abstract]
Basis Of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements include the accounts of Sussex Bancorp (“we,” “us,” “our” or the “company”) and our wholly owned subsidiary Sussex Bank (the “Bank”). The Bank’s wholly owned subsidiaries are SCB Investment Company, Inc., SCBNY Company, Inc., ClassicLake Enterprises, LLC, Wheatsworth Properties Corp., PPD Holding Company, LLC, and Tri-State Insurance Agency, Inc. (“Tri-State”), a full service insurance agency located in Sussex County, New Jersey with a satellite office located in Bergen County, New Jersey. Tri-State’s operations are considered a separate segment for financial disclosure purposes. All inter-company transactions and balances have been eliminated in consolidation. The Bank operates eleven banking offices, eight located in Sussex County, New Jersey, one located in Warren County, New Jersey, one in Queens County, New York and one in Orange County, New York. We are subject to the supervision and regulation of the Board of Governors of the Federal Reserve System (the “FRB”). The Bank’s deposits are insured by the Deposit Insurance Fund (“DIF”) of the FDIC up to applicable limits. The operations of the company and the Bank are subject to the supervision and regulation of the FRB, the FDIC and the New Jersey Department of Banking and Insurance (the “Department”) and the operations of Tri-State are subject to supervision and regulation by the Department. The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information. Accordingly, they do not include all of the information and footnotes required by the accounting principles generally accepted in the United States of America (“U.S. GAAP”) for full year financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation have been included and are of a normal, recurring nature. Operating results for the three and nine month periods ended September 30, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015. These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto that are included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2014.
New Accounting Standards	New Accounting Standards In January 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-04, Receivables - Troubled Debt Restructurings by Creditors. This ASU clarifies that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. For public entities, the guidance is effective for annual periods and interim periods within those annual periods, beginning after December 15, 2014. The adoption of this guidance did not have a material impact on our consolidated financial statements. In May 2014, FASB issued ASU 2014-09, Revenue from Contracts with Customers. The ASU’s core principle is built on the contract between a vendor and a customer for the provision of goods and services. It attempts to depict the exchange of rights and obligations between the parties in the pattern of revenue recognition based on the consideration to which the vendor is entitled. To accomplish this objective, the standard requires five basic steps: (1) identify the contract with the customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation. For public entities, the guidance is effective for annual periods and interim periods within those annual periods beginning after December 15, 2017. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In June 2014, FASB issued ASU 2014-11, Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures, to change the accounting for repurchase-to-maturity transactions and certain linked repurchase financings. This will result in accounting for both types of arrangements as secured borrowings on the balance sheet, rather than sales. Additionally, the ASU introduces new disclosures to (1) increase transparency about the types of collateral pledged in secured borrowing transactions and (2) enable users to better understand transactions in which the transferor retains substantially all of the exposure to the economic return on the transferred financial asset throughout the term of the transaction. For public entities, the disclosure for repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions accounted for as secured borrowings is required to be presented for annual periods beginning after December 15, 2014, and for interim periods beginning after March 15, 2015. All other accounting and disclosure amendments in the ASU are effective for public business entities for the first interim or annual period beginning after December 15, 2014. The adoption of this guidance did not have a material impact on our consolidated financial statements. In June 2014, FASB issued ASU 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period (a consensus of the FASB Emerging Issues Task Force), to clarify that a performance target in a share-based compensation award that could be achieved after an employee completes the requisite service period should be treated as a performance condition that affects the vesting of the award. As such, the performance target should not be reflected in estimating the grant-date fair value of the award. For all entities, the amendments are effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Earlier adoption is permitted. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In April 2015, FASB issued ASU 2015-05, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement, to clarify whether a hosting arrangement (e.g., cloud computing, software as a service, infrastructure as a service, etc.) contains a software license, and thus, whether it is to be accounted for by the customer similarly to other internal-use software. Specifically, the amendments revise the scope of Subtopic 350-40 to include internal-use software accessed through a hosting arrangement only if both of the following criteria are met: (1) the customer has the contractual right to take possession of the software at any time during the hosting period without significant penalty. There is no significant penalty if the customer has the ability to take delivery of the software without incurring significant cost and the ability to use the software separately without significant loss of utility or value and (2) it is feasible for the customer to either run the software on its own hardware or contract with another party unrelated to the vendor to host the software. If both of the above criteria are present in a hosting arrangement, then the arrangement contains a software license and the customer should account for that element in accordance with Subtopic 350-40 (i.e., generally capitalize and subsequently amortize the cost of the license). If both of the above criteria are not present, the customer should account for the arrangement as a service contract (i.e., expense fees as incurred). The amendments are effective for public business entities for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. The amendments are effective for all other entities for fiscal years beginning after December 15, 2015, and interim periods within fiscal years beginning after December 15, 2016. Early adoption is permitted. An entity can elect to adopt the amendments either (1) prospectively to all arrangements entered into or materially modified after the effective date or (2) retrospectively. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In August 2015, FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which defers the effective date of the new revenue recognition standard by one year. As such, it now takes effect for public entities in fiscal years beginning after December 15, 2017. All other entities have an additional year. However, early adoption is permitted for any entity that chooses to adopt the new standard as of the original effective date. Public business entities will adopt the standard for annual reporting periods beginning after December 15, 2017, including interim periods within that year. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim periods within that year. All other entities will adopt the standard for annual reporting periods beginning after December 15, 2018, and interim periods within annual reporting periods beginning after December 15, 2019. Early adoption is permitted as of either: (a) An annual reporting period beginning after December 15, 2016, including interim periods within that year, or (b) An annual reporting period beginning after December 15, 2016 and interim periods within annual reporting periods beginning one year after the annual period in which an entity first applies the new standard. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements.

New Accounting Standards

In January 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-04, Receivables - Troubled Debt Restructurings by Creditors. This ASU clarifies that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. For public entities, the guidance is effective for annual periods and interim periods within those annual periods, beginning after December 15, 2014. The adoption of this guidance did not have a material impact on our consolidated financial statements.

In May 2014, FASB issued ASU 2014-09, Revenue from Contracts with Customers. The ASU’s core principle is built on the contract between a vendor and a customer for the provision of goods and services. It attempts to depict the exchange of rights and obligations between the parties in the pattern of revenue recognition based on the consideration to which the vendor is entitled. To accomplish this objective, the standard requires five basic steps: (1) identify the contract with the customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation. For public entities, the guidance is effective for annual periods and interim periods within those annual periods beginning after December 15, 2017. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements.

In June 2014, FASB issued ASU 2014-11, Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures, to change the accounting for repurchase-to-maturity transactions and certain linked repurchase financings. This will result in accounting for both types of arrangements as secured borrowings on the balance sheet, rather than sales. Additionally, the ASU introduces new disclosures to (1) increase transparency about the types of collateral pledged in secured borrowing transactions and (2) enable users to better understand transactions in which the transferor retains substantially all of the exposure to the economic return on the transferred financial asset throughout the term of the transaction. For public entities, the disclosure for repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions accounted for as secured borrowings is required to be presented for annual periods beginning after December 15, 2014, and for interim periods beginning after March 15, 2015. All other accounting and disclosure amendments in the ASU are effective for public business entities for the first interim or annual period beginning after December 15, 2014. The adoption of this guidance did not have a material impact on our consolidated financial statements.

In June 2014, FASB issued ASU 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period (a consensus of the FASB Emerging Issues Task Force), to clarify that a performance target in a share-based compensation award that could be achieved after an employee completes the requisite service period should be treated as a performance condition that affects the vesting of the award. As such, the performance target should not be reflected in estimating the grant-date fair value of the award. For all entities, the amendments are effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Earlier adoption is permitted. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements.

In April 2015, FASB issued ASU 2015-05, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement, to clarify whether a hosting arrangement (e.g., cloud computing, software as a service, infrastructure as a service, etc.) contains a software license, and thus, whether it is to be accounted for by the customer similarly to other internal-use software. Specifically, the amendments revise the scope of Subtopic 350-40 to include internal-use software accessed through a hosting arrangement only if both of the following criteria are met: (1) the customer has the contractual right to take possession of the software at any time during the hosting period without significant penalty. There is no significant penalty if the customer has the ability to take delivery of the software without incurring significant cost and the ability to use the software separately without significant loss of utility or value and (2) it is feasible for the customer to either run the software on its own hardware or contract with another party unrelated to the vendor to host the software. If both of the above criteria are present in a hosting arrangement, then the arrangement contains a software license and the customer should account for that element in accordance with Subtopic 350-40 (i.e., generally capitalize and subsequently amortize the cost of the license). If both of the above criteria are not present, the customer should account for the arrangement as a service contract (i.e., expense fees as incurred). The amendments are effective for public business entities for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. The amendments are effective for all other entities for fiscal years beginning after December 15, 2015, and interim periods within fiscal years beginning after December 15, 2016. Early adoption is permitted. An entity can elect to adopt the amendments either (1) prospectively to all arrangements entered into or materially modified after the effective date or (2) retrospectively. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements.

In August 2015, FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which defers the effective date of the new revenue recognition standard by one year. As such, it now takes effect for public entities in fiscal years beginning after December 15, 2017. All other entities have an additional year. However, early adoption is permitted for any entity that chooses to adopt the new standard as of the original effective date. Public business entities will adopt the standard for annual reporting periods beginning after December 15, 2017, including interim periods within that year. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim periods within that year. All other entities will adopt the standard for annual reporting periods beginning after December 15, 2018, and interim periods within annual reporting periods beginning after December 15, 2019. Early adoption is permitted as of either: (a) An annual reporting period beginning after December 15, 2016, including interim periods within that year, or (b) An annual reporting period beginning after December 15, 2016 and interim periods within annual reporting periods beginning one year after the annual period in which an entity first applies the new standard. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements.