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Divestiture and Discontinued Operations (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended
--- | --- | --- | ---
May 05, 2017 | Nov. 04, 2015 | Mar. 31, 2018 | Mar. 31, 2017
Operations |  |  |  |
Income from discontinued operations, net of taxes |  |  | $ 0 | $ 183
PAR Springer-Miller Systems, Inc. |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Total consideration |  | $ 16,600 |  |
Consideration received | $ 4,200 | 12,100 |  |
Consideration payable period from closing date |  |  | 18 months |
Consideration could be received upon achievement of targets |  | 1,500 |  |
Consideration could be received upon achievement of targets per year |  | 500 |  |
Operations |  |  |  |
Total revenues |  |  | $ 0 | 0
Income from discontinued operations before income taxes |  |  | 0 | 284
Provision for income taxes |  |  | 0 | (101)
Income from discontinued operations, net of taxes |  |  | $ 0 | $ 183
PAR Springer-Miller Systems, Inc. | Maximum |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Consideration receivable |  | $ 4,500 |  |

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