Subsequent Events - Additional Information (Details) - Chief Executive Officer - Common Stock - USD ($) $ in Millions		6 Months Ended
	Jul. 21, 2015	Jun. 30, 2015
Subsequent Event [Line Items]
Deferred compensation arrangement with individual, description		On July 21, 2015, we entered into an employment agreement (the “Agreement”) with Dr. Keh-Shew Lu, President and Chief Executive Officer of the Company, (the “Employee”), pursuant to which he will continue to be employed by the Company for an additional seven-year term. The term of the Agreement commences on July 21, 2015 and ends on May 31, 2022, unless sooner terminated as provided in the Agreement or due to Employee’s death. As part of the Agreement between the Employee and the Company, we also entered into a Stock Unit Agreement to grant the Employee stock units with respect to the Common Stock of the Company as follows: 150,000 stock units on July 21, 2015, 250,000 stock units on July 1, 2016, 250,000 stock units on July 1, 2017, and 50,000 stock units on July 1, 2018. The grant has an expiration date of June 1, 2025. The grant can only become vested upon satisfaction of two separate vesting conditions: a service-based vesting requirement and a performance-based vesting requirement. The service-based vesting requirement will be satisfied in installments of 100,000 stock units per year beginning in July 1, 2016 and in each of the six subsequent years so long as the Employee continues to render services to the Company. The performance-based vesting requirement will be satisfied as of the third business day after the date that the Company files with the SEC an Annual Report on Form 10-K or a Quarterly Report on Form 10-Q stating the achievement of a specified amount of gross profit for the Company. Each stock unit that becomes vested will be exchanged for a Company common share upon vesting. Stock units that never become vested will be forfeited. If before the attainment of the vesting conditions, the Employee terminates his employment with the Company under certain qualified circumstances or there occurs a change of control, then his grant may become performance-based vested based on the pro-rata performance percentage on the terms and conditions set forth in the Stock Unit Agreement. The estimated fair value of this grant is approximately $16 million and is being expensed on a straight line basis through July 1, 2022. See the Company’s Form 8-K filed with the SEC on July 27, 2015 for additional information.
Deferred compensation arrangement with individual, agreement commencement date		Jul. 21, 2015
Deferred compensation arrangement with individual, agreement expiration date		May 31, 2022
Agreement termination date		May 31, 2015
Deferred compensation arrangement with individual, grant expiration date		Jun. 01, 2025
Deferred compensation arrangement with individual, grant vesting rights		The grant can only become vested upon satisfaction of two separate vesting conditions: a service-based vesting requirement and a performance-based vesting requirement. The service-based vesting requirement will be satisfied in installments of 100,000 stock units per year beginning in July 1, 2016 and in each of the six subsequent years so long as the Employee continues to render services to the Company. The performance-based vesting requirement will be satisfied as of the third business day after the date that the Company files with the SEC an Annual Report on Form 10-K or a Quarterly Report on Form 10-Q stating the achievement of a specified amount of gross profit for the Company. Each stock unit that becomes vested will be exchanged for a Company common share upon vesting. Stock units that never become vested will be forfeited. If before the attainment of the vesting conditions, the Employee terminates his employment with the Company under certain qualified circumstances or there occurs a change of control, then his grant may become performance-based vested based on the pro-rata performance percentage on the terms and conditions set forth in the Stock Unit Agreement.
Subsequent Event
Subsequent Event [Line Items]
Deferred compensation arrangement with individual, stock units granted year one on July 21, 2015	150,000
Deferred compensation arrangement with individual, stock units granted year two on July 1, 2016	250,000
Deferred compensation arrangement with individual, stock units granted year three on July 1, 2017	250,000
Deferred compensation arrangement with individual, stock units granted year four on July 1, 2018	50,000
Deferred Compensation Arrangement With Individual Shares Granted Estimated Fair Value	$ 16
Service-based vesting
Subsequent Event [Line Items]
Installment Period		6 years
Service-based vesting | Subsequent Event
Subsequent Event [Line Items]
Number of shares issuable based on service based vesting requirement condition	100,000