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OVERVIEW AND BASIS OF PRESENTATION (Tables) | 12 Months Ended
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Dec. 31, 2019
OVERVIEW AND BASIS OF PRESENTATION [Abstract] |
Restrictions on Cash and Cash Equivalents [Table Text Block] | The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the Consolidated Balance Sheets that sum to the amounts reported in the Consolidated Statement of Cash Flows (in thousands):
|  |  | December 31, 2019 |  | December 31, 2018 |  | December 31, 2017 |
Cash and cash equivalents |  |  | $ | 82,407 |  | $ | 78,237 |  | $ | 74,437 |
Restricted cash included in "Prepaid and other current assets" |  |  |  | 23,172 |  |  | — |  |  | — |
Restricted cash included in "Other noncurrent assets" |  |  |  | 12 |  |  | — |  |  | — |
Total |  |  | $ | 105,591 |  | $ | 78,237 |  | $ | 74,437 |
Schedule of property, plant and equipment useful lives | Depreciation and amortization are computed on the straight-line method based on the following estimated useful lives:
Building |  | 30 years
Computer equipment and software |  | 3 to 7 years
Telephone equipment |  | 4 to 7 years
Furniture and fixtures |  | 5 years
Leasehold improvements |  | Lesser of economic useful life (typically 10 years) or original lease term
Other |  | 3 to 7 years

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