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Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2023
Accounting Policies [Abstract] |
Allowance for Doubtful Accounts | The Company classifies unbilled receivables as Accounts receivable. The changes in the allowance for credit losses accounts consisted of the following:
|  | Year Ended December 31,
In thousands |  | 2023 |  | 2022
Balance at beginning of year |  | $ | 163 |  |  | $ | 266 |
Net charges to expense |  | 321 |  |  | (92) |
Amounts recovered against the allowance |  | (10) |  |  | (11) |
Balance at end of year |  | $ | 474 |  |  | $ | 163 |
Operations in Different Geographic Areas | The following table provides information about the operations in different geographic area for the periods indicated:
Revenue(1) |  | Year Ended December 31,
In thousands |  | 2023 |  | 2022
United States |  | $ | 173,162 |  |  | $ | 183,470 |
Other countries |  | 18,330 |  |  | 22,808 |
Total revenue |  | $ | 191,492 |  |  | $ | 206,278 |
(1) Geographic revenues are based on the location of the service being performed.
Property, plant and equipment, net(2) |  | December 31,
In thousands |  | 2023 |  | 2022
United States |  | $ | 8,005 |  |  | $ | 10,219 |
Other countries |  | 850 |  |  | 304 |
Total property, plant and equipment |  | $ | 8,855 |  |  | $ | 10,523 |
(2) Property, plant and equipment are based on physical location.
Revenue by Top Customers | The table below sets forth the percentage of our total revenue derived from our largest customers:
|  | Year Ended December 31,
|  | 2023 |  | 2022
Top ten customers |  | 48.5 | % |  | 50.6 | %
Top twenty-five customers |  | 71.7 | % |  | 72.5 | %
Property, Plant and Equipment | Property, plant and equipment, net consist of the following:
|  | Year Ended December 31,
In thousands |  | 2023 |  | 2022
Property, plant and equipment |  |  |  |
Buildings and improvements |  | $ | 4,635 |  |  | $ | 4,387 |
Equipment and furniture |  | 20,881 |  |  | 20,478 |
Software |  | 18,030 |  |  | 20,724 |
Software development and equipment installations in progress |  | 1,842 |  |  | 8,947 |
Gross property, plant and equipment |  | 45,388 |  |  | 54,536 |
Less accumulated depreciation |  | (36,533) |  |  | (44,013) |
Net property, plant and equipment |  | $ | 8,855 |  |  | $ | 10,523 |
Property, plant and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. The general ranges of estimated useful lives are:
|  | Years
Buildings and improvements |  | 3 to 40
Software |  | 2 to 10
Equipment and furniture |  | 3 to 20

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