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Certain Balance Sheet Components (Text Block) | 12 Months Ended
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Dec. 31, 2016
Balance Sheet Related Disclosures [Abstract] |
Certain Balance Sheet Components [Text Block] | Certain Balance Sheet Components
Accounts receivable, net | December 31, 2016 |  | December 31, 2015
| (in thousands)
Trade receivables (net of allowance of $3,320 and $5,949) | $ | 299,870 |  |  | $ | 298,550 |
Unbilled receivables | 51,636 |  |  | 32,345 |
Total accounts receivable, net | $ | 351,506 |  |  | $ | 330,895 |
Allowance for doubtful account activity | Year Ended December 31,
| 2016 |  | 2015
| (in thousands)
Beginning balance | $ | 5,949 |  |  | $ | 6,195 |
Provision for doubtful accounts, net | 60 |  |  | 1,025 |
Accounts written-off | (2,422 | ) |  | (549 | )
Effects of change in exchange rates | (267 | ) |  | (722 | )
Ending balance | $ | 3,320 |  |  | $ | 5,949 |
Inventories | December 31, 2016 |  | December 31, 2015
| (in thousands)
Materials | $ | 103,274 |  |  | $ | 111,191 |
Work in process | 7,925 |  |  | 9,400 |
Finished goods | 51,850 |  |  | 69,874 |
Total inventories | $ | 163,049 |  |  | $ | 190,465 |
Property, plant, and equipment, net | December 31, 2016 |  | December 31, 2015
| (in thousands)
Machinery and equipment | $ | 279,746 |  |  | $ | 289,015 |
Computers and software | 98,125 |  |  | 104,310 |
Buildings, furniture, and improvements | 122,680 |  |  | 127,531 |
Land | 17,179 |  |  | 19,882 |
Construction in progress, including purchased equipment | 29,358 |  |  | 32,639 |
Total cost | 547,088 |  |  | 573,377 |
Accumulated depreciation | (370,630 | ) |  | (383,121 | )
Property, plant, and equipment, net | $ | 176,458 |  |  | $ | 190,256 |
Depreciation expense | Year Ended December 31,
| 2016 |  | 2015 |  | 2014
| (in thousands)
Depreciation expense | $ | 43,206 |  |  | $ | 44,320 |  |  | $ | 54,435 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References No definition available. + Details
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