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Selected Quarterly Financial Information (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2016
Quantifying Misstatement in Current Year Financial Statements [Line Items] |
Schedule of Quarterly Financial Information | Quarterly Periods During Fiscal Year Ended December 31, 2016:
| Three months ended March 26, 2016 |  | Three months ended June 25, 2016 (3) |  | Three months ended September 24, 2016 |  | Three months ended December 31, 2016 (4)
| (In thousands, except per share data)
Revenue | $ | 6,119 |  |  | $ | 4,355 |  |  | $ | 5,795 |  |  | $ | 6,373 |
Gross profit (2) | $ | 1,342 |  |  | $ | (550 | ) |  | $ | 949 |  |  | $ | 1,560 |
Loss from operations | $ | (6,317 | ) |  | $ | (993 | ) |  | $ | (6,883 | ) |  | $ | (6,280 | )
Net (loss) gain attributable to the controlling interest | $ | (6,932 | ) |  | $ | (3,194 | ) |  | $ | (8,117 | ) |  | $ | (5,190 | )
Net (loss) gain per share (1): |  |  |  |  |  |  |
Basic | $ | (0.11 | ) |  | $ | (0.05 | ) |  | $ | (0.13 | ) |  | $ | (0.08 | )
Diluted | $ | (0.11 | ) |  | $ | (0.05 | ) |  | $ | (0.13 | ) |  | $ | (0.08 | )
Shares used in computing net loss per share from continuing operations: |  |  |  |  |  |  |
Basic | 63,978 |  |  | 64,011 |  |  | 64,048 |  |  | 64,138 |
Diluted | 63,978 |  |  | 64,011 |  |  | 64,048 |  |  | 64,138 |
(1) | Net loss per share is computed independently for each of the quarters presented; accordingly, the sum of the quarterly net income per share may not equal the total computed for the year.
(2) | Gross profit is defined as net product revenue less cost of product revenues.
(3) | Includes $7.7 million impact on net gain attributable to the controlling interest relating to the gain on sale of a facility for the three month period ended June 25, 2016.
(4) | Includes $1.0 million impact on net gain attributable to the controlling interest relating to the gain on sale of an investment for the three month period ended December 31, 2016.
Quarterly Periods During Fiscal Year Ended December 26, 2015:
| Three months ended March 28, 2015 (3) |  | Three months ended June 27, 2015 (4) |  | Three months ended September 26, 2015 |  | Three months ended December 26, 2015
| (In thousands, except per share data)
Revenue | $ | 8,585 |  |  | $ | 10,857 |  |  | $ | 8,001 |  |  | $ | 4,612 |
Gross profit (2) | $ | 1,857 |  |  | $ | 3,148 |  |  | $ | 1,762 |  |  | $ | (118 | )
(Loss) income from operations | $ | (5,933 | ) |  | $ | (5,474 | ) |  | $ | (5,923 | ) |  | $ | (7,906 | )
Net loss attributable to the controlling interest | $ | (3,885 | ) |  | $ | 683 |  |  | $ | (4,720 | ) |  | $ | (6,771 | )
Net loss per share from continuing operations (1): |  |  |  |  |  |  |
Basic | $ | (0.06 | ) |  | $ | 0.01 |  |  | $ | (0.07 | ) |  | $ | (0.11 | )
Diluted | $ | (0.06 | ) |  | $ | 0.01 |  |  | $ | (0.07 | ) |  | $ | (0.11 | )
Shares used in computing net loss per share from continuing operations: |  |  |  |  |  |  |
Basic | 63,084 |  |  | 63,066 |  |  | 63,068 |  |  | 63,608 |
Diluted | 63,084 |  |  | 65,030 |  |  | 63,068 |  |  | 63,608 |
(1) | Net loss per share is computed independently for each of the quarters presented; accordingly, the sum of the quarterly net income per share may not equal the total computed for the year.
(2) | Gross profit is defined as net component revenue less cost of component revenues.
(3) | Includes $2.1 million impact on net gain attributable to the controlling interest relating to the gain on sale of an investment for the three month period ended March 28, 2015.
(4) | Includes $5.5 million impact on net gain attributable to the controlling interest relating to the gain on sale of an investment for the three month period ended June 27, 2015.
Scenario, Plan [Member] |
Quantifying Misstatement in Current Year Financial Statements [Line Items] |
Schedule of Quantifying Prior Year Misstatements Corrected in Current Year Financial Statements [Table Text Block] | Immaterial Restatement: As a result of the embezzlement described in Note 14, we have made the following correcting adjustments to the amounts presented in our previously issued quarterly financial information:
Increase (Decrease)
| Three months ended March 26, 2016 |  | Three months ended June 25, 2016 |  | Three months ended March 28, 2015 |  | Three months ended June 27, 2015 |  | Three months ended September 26, 2015 |  | Three months ended December 26, 2015
(In thousands)
Gross Profit | $ | 11 |  |  | $ | 36 |  |  | $ | 12 |  |  | $ | 21 |  |  | $ | — |  |  | $ | 52 |
Loss from operations | 11 |  |  | 36 |  |  | 12 |  |  | 21 |  |  | — |  |  | 52 |
Net (loss) gain attributable to the controlling interest | (15 | ) |  | (65 | ) |  | (47 | ) |  | (98 | ) |  | (45 | ) |  | 189 |

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