Debt - Narrative (Details) - USD ($)	1 Months Ended			3 Months Ended
	Apr. 30, 2017	Jan. 31, 2017	Dec. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Nov. 30, 2015	May 31, 2015	Jun. 30, 2012
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt				$ 50,000,000	$ 0
China | Term Loan, LIBOR plus 1.80%, due December 2019 (China)
Debt Instrument [Line Items]
Interest rate at period end (as a percent)				2.81%
Proceeds from issuance of long-term debt		$ 50,000,000
Amount of debt agreement			$ 50,000,000.0
Periodic principal payment			$ 500,000.0
Subsidiary Term Loans | Korea | Term loan, LIBOR plus 2.60%, due May 2018
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				2.60%
Subsidiary Term Loans | Korea | Term loan, LIBOR plus 2.70%, due December 2019
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				2.70%
Subsidiary Term Loans | Korea | Term loan, foreign currency funding-linked base rate plus 1.32%, due May 2020
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				1.32%
Subsidiary Term Loans | Korea | Term loan, foreign currency funding-linked base rate plus 1.33%, due May 2020
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				1.33%
Subsidiary Term Loans | Korea | Term loan, fund floating rate plus 1.60%, due June 2020
Debt Instrument [Line Items]
Credit facility, borrowing capacity							$ 150,000,000
Basis spread on variable rate (as a percent)				1.60%
Remaining borrowing capacity				$ 64,000,000
Interest rate at period end (as a percent)				2.93%
Subsidiary Term Loans | Japan | Short-term term loans, variable rate
Debt Instrument [Line Items]
Remaining borrowing capacity				$ 3,100,000
Subsidiary Term Loans | Japan | Term loans, fixed rate at 0.53%, due April 2018
Debt Instrument [Line Items]
Stated interest rate (as a percent)				0.53%
Senior Notes | 6.625% Senior notes, due June 2021
Debt Instrument [Line Items]
Stated interest rate (as a percent)				6.625%
Senior Notes | 6.375% Senior notes, due October 2022
Debt Instrument [Line Items]
Stated interest rate (as a percent)				6.375%
Revolving Credit Facility | Line of Credit | $200 million revolving credit facility, LIBOR plus 1.25%-1.75%, due December 2019
Debt Instrument [Line Items]
Credit facility, borrowing capacity				$ 200,000,000
Current borrowing capacity				166,000,000
Remaining borrowing capacity				165,500,000
Revolving Credit Facility | Line of Credit | Korea | $100 million revolving credit facility, foreign currency funding-linked base rate plus 1.60%, due June 2017
Debt Instrument [Line Items]
Credit facility, borrowing capacity				$ 100,000,000	$ 100,000,000			$ 41,000,000.0
Basis spread on variable rate (as a percent)				1.60%
Remaining borrowing capacity				$ 100,000,000
Interest rate at period end (as a percent)				3.62%
Revolving Credit Facility | Line of Credit | Taiwan | Revolving credit facility, TAIFX plus a bank-determined spread, due November 2020 (Taiwan)
Debt Instrument [Line Items]
Credit facility, borrowing capacity						$ 39,000,000
Remaining borrowing capacity				$ 19,000,000
Interest rate at period end (as a percent)				2.54%
Letter of Credit
Debt Instrument [Line Items]
Standby letters of credit outstanding				$ 500,000
Letter of Credit | $200 million revolving credit facility, LIBOR plus 1.25%-1.75%, due December 2019
Debt Instrument [Line Items]
Credit facility, borrowing capacity				$ 25,000,000.0
Minimum | Revolving Credit Facility | Line of Credit | $200 million revolving credit facility, LIBOR plus 1.25%-1.75%, due December 2019
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				1.25%
Maximum | Revolving Credit Facility | Line of Credit | $200 million revolving credit facility, LIBOR plus 1.25%-1.75%, due December 2019
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				1.75%
TIBOR | Minimum | Subsidiary Term Loans | Japan | Short-term term loans, variable rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				0.24%
TIBOR | Maximum | Subsidiary Term Loans | Japan | Short-term term loans, variable rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				0.38%
TIBOR | Weighted Average | Subsidiary Term Loans | Japan | Short-term term loans, variable rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				0.32%
LIBOR | China | Term Loan, LIBOR plus 1.80%, due December 2019 (China)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				1.80%
Subsequent Event | Subsidiary Term Loans | Korea | Term loan, foreign currency funding-linked base rate plus 1.33%, due May 2020
Debt Instrument [Line Items]
Repayments of debt	$ 80,000,000
Subsequent Event | Revolving Credit Facility | Line of Credit | Korea | $100 million revolving credit facility, foreign currency funding-linked base rate plus 1.60%, due June 2017
Debt Instrument [Line Items]
Proceeds from lines of credit	$ 75,000,000