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Description of Business and Summary of Significant Accounting Policies - Additional Information (Details) |  | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 USD ($) | Dec. 31, 2019 USD ($) client employee item | Dec. 31, 2018 USD ($)
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |
Deferred Revenue |  | $ 1,100,000 |
Entity Number of Employees | employee |  | 3,000 |
Number of offices | item |  | 10 |
Amortization period |  | 12 months |
Foreign Currency Transaction Gain (Loss), before Tax |  | $ 158,000 | $ 56,000
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax |  | 566,000 | (779,000)
Goodwill, Impairment Loss |  | 0 | 675,000
Outstanding foreign currency forward contracts |  | 0 |
Allowance for Doubtful Accounts Receivable |  |  | 1,000,000
Cash and Cash Equivalents, at Carrying Value, Total |  | $ 10,874,000 | 10,869,000
Quantifying Misstatement in Current Year Financial Statements, Amount |  |  | 269,000,000
Unrecorded Pension Expense [Member] |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |
Quantifying Misstatement in Current Year Financial Statements, Amount |  |  | $ 269,000
Minimum [Member] |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |
Property and equipment useful lives |  | 2 years |
Maximum [Member] |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |
Property and equipment useful lives |  | 5 years |
Digital Data Solutions [Member] |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |
Goodwill, Impairment Loss | $ 675,000 | $ 675,000 |
Agility [Member] |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |
Goodwill, Impairment Loss |  | $ 0 |
Intelligent Data Platforms [Member] |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |
Entity Number of Employees | client |  | 20 |
Foreign Subsidiaries [Member] |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |
Cash and Cash Equivalents, at Carrying Value, Total |  | $ 4,800,000 |
United States |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |
Cash and Cash Equivalents, at Carrying Value, Total |  | $ 6,100,000 |

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