Derivatives - Forward Notional Contracts (Details) - Sep. 30, 2016 € in Thousands, ¥ in Thousands, £ in Thousands, SFr in Thousands, SEK in Thousands, HKD in Thousands, CAD in Thousands, BRL in Thousands, AUD in Thousands	CNY (¥)	SEK	HKD	CAD	GBP (£)	CHF (SFr)	BRL	EUR (€)	AUD
Foreign currency forward contracts
Derivative [Line Items]
Notional amount of derivative	¥ 28,425	SEK 3,500	HKD 11,000	CAD 3,150	£ 767	SFr 210	BRL 3,900	€ 250	AUD 3,450