Derivatives - Forward Notional Contracts (Details) - Mar. 31, 2017 - Foreign currency forward contracts € in Thousands, ₩ in Thousands, ¥ in Thousands, ¥ in Thousands, £ in Thousands, SGD in Thousands, SFr in Thousands, SEK in Thousands, MXN in Thousands, HKD in Thousands, DKK in Thousands, CAD in Thousands, BRL in Thousands, AUD in Thousands	CNY (¥)	DKK	MXN	CHF (SFr)	KRW (₩)	GBP (£)	CAD	JPY (¥)	SGD	SEK	EUR (€)	HKD	BRL	AUD
Not designated as hedging instrument
Derivative [Line Items]
Notional amount of derivative	¥ 40,300		MXN 14,374	SFr 240	₩ 1,500,000	£ 824	CAD 1,320	¥ 106,000	SGD 3,900	SEK 3,561	€ 23,215	HKD 11,000	BRL 3,700	AUD 4,742
Derivatives designated as cash flow hedges | Designated as hedging instrument
Derivative [Line Items]
Notional amount of derivative		DKK 9,895	MXN 88,825	SFr 1,568		£ 3,600				SEK 15,100	€ 9,635