Derivative Instruments - Forward and Spot Contracts on Foreign Currency Exchange Contracts (Details) - Sep. 30, 2015 € in Thousands, £ in Thousands, AUD in Thousands |
GBP (£) |
EUR (€) |
AUD |
|---|---|---|---|
| Foreign Currency Exchange Contract [Member] | Derivatives Not Designated as Hedging Instruments [Member] | |||
| Derivatives, Fair Value [Line Items] | |||
| Aggregate Notional Amount | £ 17,000 | € 1,700 | AUD 9,500 |