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Summary of Significant Accounting Policies - Narrative (Details) |  | 1 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 18, 2019 USD ($) | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) segment $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2019 USD ($) $ / shares shares | Jan. 01, 2022 USD ($) | Sep. 17, 2021 | Feb. 10, 2020 | Apr. 15, 2019 | Dec. 31, 2018 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Number of operating segments | segment |  |  | 2 |  |  |  |  |  |  |
Costs of sales |  |  | $ 220,755,000 | $ 174,461,000 | $ 149,821,000 |  |  |  |  |
Selling, general and administrative |  |  | 83,998,000 | 46,196,000 | 38,068,000 |  |  |  |  |
Gross assets |  | $ 35,856,000 | 35,856,000 | 33,720,000 |  |  |  |  |  |
Accumulated depreciation, and property plant, and equipment |  | 22,147,000 | 22,147,000 | 19,864,000 |  |  |  |  |  |
Recorded inventory write-downs |  | 10,800,000 | 10,800,000 | 12,000,000 |  |  |  |  |  |
Change in fair value of contingent consideration |  |  | 0 | 3,340,000 | 0 |  |  |  |  |
Life insurance balance |  | 3,700,000 | 3,700,000 | 3,700,000 |  |  |  |  |  |
Deferred compensation liability |  | $ 2,400,000 | $ 2,400,000 | 2,800,000 |  |  |  |  |  |
Long-term deferred amount due 2021 |  | 50.00% | 50.00% |  |  |  |  |  |  |
Long-term deferred amount due 2022 |  | 50.00% | 50.00% |  |  |  |  |  |  |
Accrued payroll taxes |  | $ 2,800,000 | $ 2,800,000 |  |  |  |  |  |  |
Decrease in accrued salaries and benefits |  | $ 1,900,000 | 270,000 | (5,327,000) | (1,829,000) |  |  |  |  |
Cost of acquired and internally developed software |  |  | 34,579,000 | 19,252,000 | 13,372,000 |  |  |  |  |
Capitalized software costs |  |  | 9,300,000 | 3,800,000 |  |  |  |  |  |
Amortization of identifiable intangible assets |  |  | 1,825,000 | 1,163,000 | $ 156,000 |  |  |  |  |
Impairment of intangible assets |  |  | $ 0 | $ 0 |  |  |  |  |  |
Notes conversion (in dollars per share) | $ / shares |  | $ 46.4037 | $ 46.4037 | $ 30.8356 | $ 17.8571 |  |  |  |  |
Conversion of shares converted (in shares) | shares |  |  | 638,051 | 3,700,272 | 4,732,132 |  |  |  |  |
Impairment of long-lived assets |  |  | $ 0 | $ 0 | $ 0 |  |  |  |  |
Adjustment for accounting standards update |  | $ 504,345,000 | 504,345,000 | 188,405,000 | 72,847,000 |  |  |  |  | $ 45,946,000
(Accumulated Deficit) Retained Earnings |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Adjustment for accounting standards update |  | (122,505,000) | (122,505,000) | $ (46,706,000) | $ (10,144,000) |  |  |  |  | $ 5,427,000
Cumulative Effect, Period of Adoption, Adjustment | (Accumulated Deficit) Retained Earnings | Subsequent event |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Adjustment for accounting standards update |  |  |  |  |  | $ (87,800,000) |  |  |  |
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2019-12 |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Adjustment for accounting standards update |  | 14,900,000 | 14,900,000 |  |  |  |  |  |  |
Developed technology | Director |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Accounts payable owed to Act III Management |  | $ 0 | 0 |  |  |  |  |  |  |
Master Development Agreement | Director |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Amount paid for services to Act III Management |  |  | $ 1,300,000 |  |  |  |  |  |  |
Restricted Stock |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Non-vested awards outstanding (in shares) | shares |  | 27,000 | 27,000 | 61,000 |  |  |  |  |  |
Weighted average grant date fair value | $ / shares |  | $ 25.42 | $ 25.42 | $ 25.62 |  |  |  |  |  |
Other Noncurrent Liabilities |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Accrued payroll taxes |  | $ 1,900,000 | $ 1,900,000 |  |  |  |  |  |  |
Convertible Senior Notes Due 2024 | Convertible Debt |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  |  |  | 4.50% |
Convertible Senior Notes Due 2026 | Convertible Debt |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  | 1.50% | 2.875% |  |
Stock Options |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Incremental shares excluded from computation of diluted earnings per share (in shares) | shares |  |  | 1,305,881 | 956,627 | 383,000 |  |  |  |  |
Restricted Stock |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Incremental shares excluded from computation of diluted earnings per share (in shares) | shares |  |  | 418,084 | 426,632 | 67,000 |  |  |  |  |
Cost of sales - contracts |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization of identifiable intangible assets |  |  | $ 17,389,000 | $ 6,726,000 | $ 5,531,000 |  |  |  |  |
Amortization of Intangible Assets |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization of identifiable intangible assets |  |  | 1,825,000 | 1,150,000 | 156,000 |  |  |  |  |
Internally developed software costs |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Cost of acquired and internally developed software |  |  | $ 5,411,000 | 3,269,000 | 4,470,000 |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Warranty period |  |  | 12 months |  |  |  |  |  |  |
Estimated useful lives |  |  | 3 years |  |  |  |  |  |  |
Estimated useful life |  |  | 3 years |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Warranty period |  |  | 36 months |  |  |  |  |  |  |
Estimated useful lives |  |  | 25 years |  |  |  |  |  |  |
Estimated useful life |  |  | 7 years |  |  |  |  |  |  |
AccSys LLC (Restaurant Magic) |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Contingent consideration liability | $ 3,300,000 |  |  | 0 | 3,300,000 |  |  |  |  |
Change in fair value of contingent consideration |  |  |  | (3,300,000) |  |  |  |  |  |
AccSys LLC (Restaurant Magic) | Minimum |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Estimated useful life | 2 years |  |  |  |  |  |  |  |  |
AccSys LLC (Restaurant Magic) | Maximum |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Estimated useful life | 7 years |  |  |  |  |  |  |  |  |
Revision of Prior Period, Reclassification, Adjustment |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Change in fair value of contingent consideration |  |  |  | (3,300,000) |  |  |  |  |  |
Product |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Costs of sales |  |  | $ 80,841,000 | 58,887,000 | 51,189,000 |  |  |  |  |
Service |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Costs of sales |  |  | $ 73,226,000 | $ 49,933,000 | $ 40,389,000 |  |  |  |  |

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