Debt, Convertible Note (Details)		3 Months Ended
	Jun. 16, 2016 USD ($)	Mar. 31, 2017 USD ($) d $ / shares shares		Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Net Carrying Amount of Liability Component [Abstract]
Unamortized debt discount (conversion option)		$ (11,900,000)
Unamortized debt discount (issuance costs)		(5,152,000)
Debt issuance costs		17,830,000		$ 15,308,000
Convertible Note [Member]
Convertible Debt [Abstract]
Original principal amount	$ 210,000,000	$ 210,000,000
Interest rate		4.75%
Maturity date		Jun. 15, 2020
Redemption price, percentage of principal amount redeemed		100.00%
Threshold percentage of stock price trigger		180.00%
Threshold trading days | d		20
Threshold final trading days | d		3
Threshold consecutive trading days		30 days
Principal amount increments that can be repurchased upon a change in control or termination of trading of common stock		$ 1,000
Principal amount increments that can be converted		$ 1,000
Holding period following issue date before notes can be converted		6 months
Initial conversion rate (in shares) | shares		21.5054
Initial conversion price (in dollars per share) | $ / shares		$ 46.50
Proceeds from issuance of notes	210,000,000
Liability component of convertible notes	199,100,000
Equity component of convertible notes allocated to additional paid-in capital	$ 10,900,000
Effective interest rate		7.10%
Net Carrying Amount of Liability Component [Abstract]
Principal		$ 210,000,000	[1],[2]		$ 210,000,000
Unamortized debt discount (conversion option)		(9,003,000)
Total long-term debt, net		200,997,000
Unamortized debt discount (issuance costs)		(5,152,000)
Net carrying amount		195,845,000
Debt issuance costs		6,600,000
Additions to deferred financing cost		6,300,000
Adjustments to additional paid-in capital for debt issuance costs		300,000
Interest expense		3,500,000
Contractual interest		2,500,000
Amortization of debt issuance costs and debt discount		$ 1,000,000

[1] As of March 31, 2017, the current portion of the Company's debt (i.e. becoming due in the next 12 months) included $14.3 million of the balance of its U.S. dollar denominated debt under the Credit Agreement facility, $6.7 million of the balance of its Japanese yen-denominated debt under the Credit Agreement facility and $6.0 million of the Japan subsidiary loan. The Company has classified the $72.5 million borrowed under the revolving line of credit as short term because it is the Company's intention to use the line of credit to borrow and pay back funds over short periods of time.

[2] The carrying value of the debt reflects the amounts stated in the above table less a debt discount of $11.9 million and debt issuance costs of $5.2 million (consisting of $14.2 million related to the Convertible Note and $2.9 million related to the credit agreement), which is not reflected in this table.