Basis of presentation	9 Months Ended
Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of presentation	Basis of presentation The accompanying unaudited interim consolidated financial statements of PAR Technology Corporation (the “Company” or “PAR”, "we","us") have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial statements and the instructions to Form 10-Q and Article 8 of Regulation S-X pertaining to interim financial statements. Accordingly, they do not include all information and footnotes required by GAAP for annual financial statements. In the opinion of management, such unaudited interim consolidated financial statements include all normal and recurring adjustments necessary in order to make the unaudited interim consolidated financial statements not misleading and to provide a fair presentation of the results for the interim periods included in this Quarterly Report on Form 10-Q (“Quarterly Report”). Operating results for the three and nine months ended September 30, 2019 are not necessarily indicative of the results of operations that may be expected for any future period. The balance sheet at December 31, 2018 has been derived from the Company’s audited consolidated financial statements at that date but does not include all of the information and footnotes required by U.S. GAAP for complete financial statements. For further information, please refer to the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018, as filed with the U.S. Securities and Exchange Commission (“SEC”). The preparation of the unaudited interim consolidated financial statements requires management of the Company to make a number of estimates and assumptions relating to the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the unaudited interim consolidated financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include revenue recognition, stock based compensation, the recognition and measurement of assets acquired and liabilities assumed in business combinations at fair value, the carrying amount of property, plant and equipment including right-to-use assets and liabilities, identifiable intangible assets and goodwill, the measurement of liabilities and equity recognized for outstanding convertible notes, valuation allowances for receivables, inventories and deferred income tax assets, and measurement of contingent consideration at fair value. Actual results could differ from those estimates. The unaudited interim consolidated financial statements and related notes should be read in conjunction with the Company’s audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018, filed with the SEC on March 18, 2019. In June 2016, the FASB issued ASU 2016-13, "Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments." ASU 2016-13 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. In addition, ASU 2016-13 amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The amendment is effective for the Company beginning with its fiscal year ending December 31, 2020, however early application is permitted for reporting periods beginning after December 15, 2018. The Company is in the process of evaluating the impact of this standard. In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment.” ASU 2017-04 eliminates Step 2 from the goodwill impairment test which required entities to compute the implied fair value of goodwill. Under ASU 2017-04, an entity should perform its annual or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. ASU 2017-04 will be effective for the Company on January 1, 2020, with earlier adoption permitted; it is not expected to have a material impact on the Company's consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, “Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement.” ASU 2018-13 modifies the fair value measurements disclosures with the primary focus to improve effectiveness of disclosures in the notes to the financial statements that is most important to the users. The new guidance modifies the required disclosures related to the valuation techniques and inputs used, uncertainty in measurement, and changes in measurements applied. ASU 2018-13 will be effective for the Company for its fiscal year beginning after December 15, 2019 and each quarterly period thereafter. Early adoption is permitted. The Company is currently assessing the impact this new guidance may have on the Company’s consolidated financial statements and footnote disclosures. In August 2018, the FASB issued ASU 2018-15, “Intangibles - Goodwill and Other (Topic 350) - Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.” ASU 2018-15 provides guidance on the measurement of costs for internal-use software during the design, development and implementation stages for customers in a cloud based hosting arrangement. AU 2018-15 also requires the capitalized costs associated with the design, development and implementation of cloud based, hosted arrangements to be amortized over the term of the hosting arrangement. ASU 2018-15 will be effective for the Company on January 1, 2020, with earlier adoption permitted; it is not expected to have a material impact on the Company's consolidated financial statements. In February 2016, the Financial Accounting Standards Board (FASB) issued ASU 2016-02, "Leases (Topic 842)", impacting the accounting for leases intending to increase transparency and comparability of organizations by requiring balance sheet presentation of leased assets and increased financial statement disclosure of leasing arrangements. The revised standard will require entities to recognize a liability for its lease obligations and a corresponding asset representing the right to use the underlying asset over the lease term. Lease obligations are to be measured at the present value of lease payments and accounted for using the effective interest method. The accounting for the leased asset will differ slightly depending on whether the agreement is deemed to be a financing or operating lease. For finance leases, the leased asset is depreciated on a straight-line basis and recorded separately from the interest expense in the income statement resulting in higher expense in the earlier part of the lease term. For operating leases, the depreciation and interest expense components are combined, recognized evenly over the term of the lease, and presented as a reduction to operating income. The ASU requires that assets and liabilities be presented or disclosed separately and classified appropriately as current and noncurrent. The ASU further requires additional disclosure of certain qualitative and quantitative information related to lease agreements. The new standard was effective for the Company beginning January 1, 2019 (see Note 5 - Leases, to the unaudited interim consolidated financial statements).

Basis of presentation

The accompanying unaudited interim consolidated financial statements of PAR Technology Corporation (the “Company” or “PAR”, "we","us") have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial statements and the instructions to Form 10-Q and Article 8 of Regulation S-X pertaining to interim financial statements. Accordingly, they do not include all information and footnotes required by GAAP for annual financial statements. In the opinion of management, such unaudited interim consolidated financial statements include all normal and recurring adjustments necessary in order to make the unaudited interim consolidated financial statements not misleading and to provide a fair presentation of the results for the interim periods included in this Quarterly Report on Form 10-Q (“Quarterly Report”). Operating results for the three and nine months ended September 30, 2019 are not necessarily indicative of the results of operations that may be expected for any future period. The balance sheet at December 31, 2018 has been derived from the Company’s audited consolidated financial statements at that date but does not include all of the information and footnotes required by U.S. GAAP for complete financial statements. For further information, please refer to the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018, as filed with the U.S. Securities and Exchange Commission (“SEC”).

The preparation of the unaudited interim consolidated financial statements requires management of the Company to make a number of estimates and assumptions relating to the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the unaudited interim consolidated financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include revenue recognition, stock based compensation, the recognition and measurement of assets acquired and liabilities assumed in business combinations at fair value, the carrying amount of property, plant and equipment including right-to-use assets and liabilities, identifiable intangible assets and goodwill, the measurement of liabilities and equity recognized for outstanding convertible notes, valuation allowances for receivables, inventories and deferred income tax assets, and measurement of contingent consideration at fair value. Actual results could differ from those estimates.

The unaudited interim consolidated financial statements and related notes should be read in conjunction with the Company’s audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018, filed with the SEC on March 18, 2019.

In June 2016, the FASB issued ASU 2016-13, "Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments." ASU 2016-13 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. In addition, ASU 2016-13 amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The amendment is effective for the Company beginning with its fiscal year ending December 31, 2020, however early application is permitted for reporting periods beginning after December 15, 2018. The Company is in the process of evaluating the impact of this standard.

In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment.” ASU 2017-04 eliminates Step 2 from the goodwill impairment test which required entities to compute the implied fair value of goodwill. Under ASU 2017-04, an entity should perform its annual or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. ASU 2017-04 will be effective for the Company on January 1, 2020, with earlier adoption permitted; it is not expected to have a material impact on the Company's consolidated financial statements.

In August 2018, the FASB issued ASU 2018-13, “Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement.” ASU 2018-13 modifies the fair value measurements disclosures with the primary focus to improve effectiveness of disclosures in the notes to the financial statements that is most important to the users. The new guidance modifies the required disclosures related to the valuation techniques and inputs used, uncertainty in measurement, and changes in measurements applied. ASU 2018-13 will be effective for the Company for its fiscal year beginning after December 15, 2019 and each quarterly period thereafter. Early adoption is permitted. The Company is currently assessing the impact this new guidance may have on the Company’s consolidated financial statements and footnote disclosures.

In August 2018, the FASB issued ASU 2018-15, “Intangibles - Goodwill and Other (Topic 350) - Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.” ASU 2018-15 provides guidance on the measurement of costs for internal-use software during the design, development and implementation stages for customers in a cloud based hosting arrangement. AU 2018-15 also requires the capitalized costs associated with the design, development and implementation of cloud based, hosted arrangements to be amortized over the term of the hosting arrangement. ASU 2018-15 will be effective for the Company on January 1, 2020, with earlier adoption permitted; it is not expected to have a material impact on the Company's consolidated financial statements.

In February 2016, the Financial Accounting Standards Board (FASB) issued ASU 2016-02, "Leases (Topic 842)", impacting the accounting for leases intending to increase transparency and comparability of organizations by requiring balance sheet presentation of leased assets and increased financial statement disclosure of leasing arrangements. The revised standard will require entities to recognize a liability for its lease obligations and a corresponding asset representing the right to use the underlying asset over the lease term. Lease obligations are to be measured at the present value of lease payments and accounted for using the effective interest method. The accounting for the leased asset will differ slightly depending on whether the agreement is deemed to be a financing or operating lease. For finance leases, the leased asset is depreciated on a straight-line basis and recorded separately from the interest expense in the income statement resulting in higher expense in the earlier part of the lease term. For operating leases, the depreciation and interest expense components are combined, recognized evenly over the term of the lease, and presented as a reduction to operating income. The ASU requires that assets and liabilities be presented or disclosed separately and classified appropriately as current and noncurrent. The ASU further requires additional disclosure of certain qualitative and quantitative information related to lease agreements. The new standard was effective for the Company beginning January 1, 2019 (see Note 5 - Leases, to the unaudited interim consolidated financial statements).