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Restructuring and Excess Facilities (Tables) | 12 Months Ended
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Dec. 31, 2019
Restructuring Cost and Reserve [Line Items] |
Restructuring and Related Costs [Table Text Block] | The following table summarizes the restructuring and related charges (in thousands):
| Year ended December 31,
Restructuring and related charges in: | 2019 |  | 2018 |  | 2017
Cost of revenue | $ | 1,391 |  |  | $ | 857 |  |  | $ | 1,279 |
Operating expenses - Restructuring and related charges | 3,141 |  |  | 2,918 |  |  | 5,307 |
Total restructuring and related charges | $ | 4,532 |  |  | $ | 3,775 |  |  | $ | 6,586 |
Schedule of Restructuring Reserve by Type of Cost [Table Text Block] | The following table summarizes the activities related to the Company’s restructuring plans during the fiscal year ended December 31, 2019 (in thousands):
| Excess facilities |  | Severance and Benefits |  | French VDP |  | Others |  | Total
Balance at December 31, 2018 | $ | 2,926 |  |  | $ | — |  |  | $ | 2,409 |  |  | $ | — |  |  | $ | 5,335 |
Charges for current period | — |  |  | 4,102 |  |  | 50 |  |  | 380 |  |  | 4,532 |
Adjustments to restructuring provisions and others | (334 | ) |  | 11 |  |  | (28 | ) |  | — |  |  | (351 | )
Cash payments | (1,872 | ) |  | (819 | ) |  | (1,625 | ) |  | (350 | ) |  | (4,666 | )
Balance at December 31, 2019 | $ | 720 |  |  | $ | 3,294 |  |  | $ | 806 |  |  | $ | 30 |  |  | $ | 4,850 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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- Definition Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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