Derivatives - Forward Notional Contracts (Details) - Jun. 30, 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	¥ 53,310		MXN 12,663	SFr 215	₩ 1,800,000	£ 811	CAD 2,100	¥ 120,000	SGD 4,902	SEK 3,552	€ 22,779	HKD 11,000	BRL 7,400	AUD 5,270
Derivatives designated as cash flow hedges | Designated as hedging instrument
Derivative [Line Items]
Notional amount of derivative		DKK 9,955	MXN 83,325	SFr 1,448		£ 3,355				SEK 13,930	€ 8,375