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Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2021
Revenue from Contract with Customer [Abstract] |
Schedule of Performance Obligations | The aggregate uncompleted performance obligations attributable to each of the Company's reporting segments is as follows (in thousands):
| December 31, 2021 |  | December 31, 2020
| Current under one year |  | Non-current over one year |  | Current under one year |  | Non-current over one year
Restaurant/Retail | $ | 12,449 |  |  | $ | 7,597 |  |  | $ | 8,000 |  |  | $ | 3,082 |
Government | — |  |  | — |  |  | — |  |  | — |
Total | $ | 12,449 |  |  | $ | 7,597 |  |  | $ | 8,000 |  |  | $ | 3,082 |
The changes in deferred revenue, inclusive of both current and long-term, are as follows:
(in thousands) | 2021 |  | 2020
Beginning balance - January 1 | $ | 11,082 |  |  | $ | 12,486 |
Acquired deferred revenue (Note 2) | 11,125 |  |  | — |
Recognition of deferred revenue | (19,229) |  |  | (11,005) |
Deferral of revenue | 17,068 |  |  | 9,601 |
Ending balance - December 31 | $ | 20,046 |  |  | $ | 11,082 |
Schedule of Disaggregated Revenue | Disaggregated revenue is as follows (in thousands):
| Year Ended December 31, 2021
| Restaurant/Retail Point in Time |  | Restaurant/Retail Over Time |  | Government Over Time
Hardware | $ | 102,066 |  |  | $ | — |  |  | $ | — |
Software | 1,131 |  |  | 56,723 |  |  | — |
Service | 19,983 |  |  | 30,448 |  |  | — |
Mission systems | — |  |  | — |  |  | 38,311 |
Intelligence, surveillance, and reconnaissance solutions | — |  |  | — |  |  | 33,188 |
Product | — |  |  | — |  |  | 1,026 |
Total | $ | 123,180 |  |  | $ | 87,171 |  |  | $ | 72,525 |
| Year Ended December 31, 2020
| Restaurant/Retail Point in Time |  | Restaurant/Retail Over Time |  | Government Over Time
Hardware | $ | 72,029 |  |  | $ | — |  |  | $ | — |
Software | 668 |  |  | 25,716 |  |  | — |
Service | 16,523 |  |  | 27,576 |  |  | — |
Mission systems | — |  |  | — |  |  | 37,448 |
Intelligence, surveillance, and reconnaissance solutions | — |  |  | — |  |  | 32,947 |
Product | — |  |  | — |  |  | 879 |
Total | $ | 89,220 |  |  | $ | 53,292 |  |  | $ | 71,274 |
Restaurant/Retail balances in the amount of $142.5 million presented across hardware, software and service was reclassified in the above table to conform with current year presentation.
| Year Ended December 31, 2019
| Restaurant/Retail Point in Time |  | Restaurant/Retail Over Time |  | Government Over Time
Hardware | $ | 63,811 |  |  | $ | — |  |  | $ | — |
Software | 3,143 |  |  | 13,677 |  |  | — |
Service | 26,903 |  |  | 15,773 |  |  | — |
Mission systems | — |  |  | — |  |  | 29,541 |
Intelligence, surveillance, and reconnaissance solutions | — |  |  | — |  |  | 33,513 |
Product | — |  |  | — |  |  | 871 |
Total | $ | 93,857 |  |  | $ | 29,450 |  |  | $ | 63,925 |
Restaurant/Retail balances in the amount of $123.3 million presented across hardware, software and service was reclassified in the above table to conform with current year presentation.

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- Definition Tabular disclosure of expected timing for satisfying remaining performance obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045 + Details
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