Commitments and Contingencies (Details 4) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Accounts Receivable, Net, Current	60,085,000us-gaap_AccountsReceivableNetCurrent	$ 23,823,000us-gaap_AccountsReceivableNetCurrent
Purchase Commitments
Purchase commitments due within one year	112,400,000
Supplier deposits against purchase commitments	12,700,000us-gaap_DepositAssets	9,400,000us-gaap_DepositAssets
Minimum
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Credit period for accounts receivable	30 days
Maximum
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Credit period for accounts receivable	90 days
Asia Pacific
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Accounts Receivable, Net, Current	42,177,000	13,899,000
China
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Accounts Receivable, Net, Current	17,911,000	4,130,000
Korea
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Accounts Receivable, Net, Current	8,118,000	2,411,000
Thailand
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Accounts Receivable, Net, Current	6,324,000	2,041,000
Taiwan
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Accounts Receivable, Net, Current	5,838,000	427,000
Other
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Accounts Receivable, Net, Current	3,986,000	4,890,000
United States
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Accounts Receivable, Net, Current	13,139,000	8,369,000
EMEA and other
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Accounts Receivable, Net, Current	4,769,000	$ 1,555,000

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3-4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Subparagraph a(1)

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 8

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.8,17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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+ References

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+ References

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