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Selected Quarterly Financial Information (Unaudited) (Tables)
 12 Months Ended
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