Interim Financial Statements	6 Months Ended
Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interim Financial Statements	1. Interim Financial Statements The unaudited consolidated financial statements of Landmark Bancorp, Inc. (the “Company”) and its wholly owned subsidiaries, Landmark National Bank (the “Bank”) and Landmark Risk Management Inc., have been prepared in accordance with the instructions to Form 10-Q. Accordingly, they do not include all the information and footnotes required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements and should be read in conjunction with the Company’s most recent Annual Report on Form 10-K, containing the latest audited consolidated financial statements and notes thereto. The consolidated financial statements in this report have not been audited by an independent registered public accounting firm, but in the opinion of management, all adjustments, consisting of normal recurring accruals, considered necessary for a fair presentation of financial statements have been reflected herein. The results of the six month interim period ended June 30, 2018 are not necessarily indicative of the results expected for the year ending December 31, 2018 or any other future time period. The Company has evaluated subsequent events for recognition and disclosure up to the date the financial statements were issued. On January 1, 2018, the Company adopted ASU 2014-09 Revenue from Contracts with Customers and all subsequent amendments to the ASU (collectively, “ASC 606”), which (i) creates a single framework for recognizing revenue from contracts with customers that fall within its scope and (ii) revises when it is appropriate to recognize a gain (loss) from the transfer of non-financial assets, such as real estate owned. The majority of the Company’s revenues come from interest income and other sources, including loans, leases, securities and derivatives that are outside the scope of ASC 606. Services within the scope of ASC 606 include deposit service charges on deposits, interchange income, and the sale of real estate owned. Refer to footnote 7 to the financial statements, Revenue from Contracts with Customers, for further discussion on the Company’s accounting policies for revenue sources within the scope of ASC 606. The Company adopted ASC 606 using the modified retrospective method applied to all contracts not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606 while prior period amounts continue to be reported in accordance with legacy GAAP. The adoption of ASC 606 did not result in a change to the accounting for any of the in-scope revenue streams. As such, no cumulative effect adjustment was recorded. In January 2016, the Financial Accounting Standards Board (the “FASB”) issued ASU 2016-01, Financial Instruments (Topic 825): Recognition and Measurement of Financial Assets and Liabilities. The main provisions of the update are to eliminate the available for sale classification of accounting for equity securities and to adjust the fair value disclosures for financial instruments carried at amortized costs such that the disclosed fair values represent an exit price as opposed to an entry price. The provisions of this update will require that equity securities be carried at fair market value on the balance sheet and any periodic changes in value will be adjustments to the income statement. A practical expedient is provided for equity securities without a readily determinable fair value, such that these securities can be carried at cost less any impairment. The provisions of this update became effective for interim and annual periods beginning after December 15, 2017. The Company adopted ASU 2016-01 effective January 1, 2018. Effective January 1, 2018, changes in the value of the Company’s common stock investments are adjustments to the income statement. Additionally, the disclosure of fair value of the loan portfolio is presented using an exit price method instead of the discounted cash method previously utilized. Management has concluded that the requirements of this update do not have a material impact to the Company’s financial position, results of operations or cash flows. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Payments (a consensus of Emerging Issues Task Force). This ASU attempts to clarify how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The purpose of this update is to reduce existing diversity in practice in eight areas addressed by the update. The amendments in this update are effective for fiscal years, and interim periods within those years, beginning after December 15, 2017. Early adoption is permitted. The Company adopted ASU 2016-15 effective January 1, 2018. The adoption of ASU 2016-15 did not result in any material changes to the Company’s consolidated financial statements and related disclosures.

Interim Financial Statements

6 Months Ended

Jun. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. Interim Financial Statements

The unaudited consolidated financial statements of Landmark Bancorp, Inc. (the “Company”) and its wholly owned subsidiaries, Landmark National Bank (the “Bank”) and Landmark Risk Management Inc., have been prepared in accordance with the instructions to Form 10-Q. Accordingly, they do not include all the information and footnotes required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements and should be read in conjunction with the Company’s most recent Annual Report on Form 10-K, containing the latest audited consolidated financial statements and notes thereto. The consolidated financial statements in this report have not been audited by an independent registered public accounting firm, but in the opinion of management, all adjustments, consisting of normal recurring accruals, considered necessary for a fair presentation of financial statements have been reflected herein. The results of the six month interim period ended June 30, 2018 are not necessarily indicative of the results expected for the year ending December 31, 2018 or any other future time period. The Company has evaluated subsequent events for recognition and disclosure up to the date the financial statements were issued.

On January 1, 2018, the Company adopted ASU 2014-09 Revenue from Contracts with Customers and all subsequent amendments to the ASU (collectively, “ASC 606”), which (i) creates a single framework for recognizing revenue from contracts with customers that fall within its scope and (ii) revises when it is appropriate to recognize a gain (loss) from the transfer of non-financial assets, such as real estate owned. The majority of the Company’s revenues come from interest income and other sources, including loans, leases, securities and derivatives that are outside the scope of ASC 606. Services within the scope of ASC 606 include deposit service charges on deposits, interchange income, and the sale of real estate owned. Refer to footnote 7 to the financial statements, Revenue from Contracts with Customers, for further discussion on the Company’s accounting policies for revenue sources within the scope of ASC 606.

The Company adopted ASC 606 using the modified retrospective method applied to all contracts not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606 while prior period amounts continue to be reported in accordance with legacy GAAP. The adoption of ASC 606 did not result in a change to the accounting for any of the in-scope revenue streams. As such, no cumulative effect adjustment was recorded.

In January 2016, the Financial Accounting Standards Board (the “FASB”) issued ASU 2016-01, Financial Instruments (Topic 825): Recognition and Measurement of Financial Assets and Liabilities. The main provisions of the update are to eliminate the available for sale classification of accounting for equity securities and to adjust the fair value disclosures for financial instruments carried at amortized costs such that the disclosed fair values represent an exit price as opposed to an entry price. The provisions of this update will require that equity securities be carried at fair market value on the balance sheet and any periodic changes in value will be adjustments to the income statement. A practical expedient is provided for equity securities without a readily determinable fair value, such that these securities can be carried at cost less any impairment. The provisions of this update became effective for interim and annual periods beginning after December 15, 2017. The Company adopted ASU 2016-01 effective January 1, 2018. Effective January 1, 2018, changes in the value of the Company’s common stock investments are adjustments to the income statement. Additionally, the disclosure of fair value of the loan portfolio is presented using an exit price method instead of the discounted cash method previously utilized. Management has concluded that the requirements of this update do not have a material impact to the Company’s financial position, results of operations or cash flows.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Payments (a consensus of Emerging Issues Task Force). This ASU attempts to clarify how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The purpose of this update is to reduce existing diversity in practice in eight areas addressed by the update. The amendments in this update are effective for fiscal years, and interim periods within those years, beginning after December 15, 2017. Early adoption is permitted. The Company adopted ASU 2016-15 effective January 1, 2018. The adoption of ASU 2016-15 did not result in any material changes to the Company’s consolidated financial statements and related disclosures.