Derivative Financial Instruments (Summary Of Derivative Financial Instruments Notional Amounts On Outstanding Positions) (Details) $ in Thousands |
Sep. 30, 2016
USD ($)
|
|---|---|
| Derivatives, Fair Value [Line Items] | |
| Total notional value | $ 272,953 |
| Euro [Member] | |
| Derivatives, Fair Value [Line Items] | |
| Total notional value | 79,459 |
| Singapore Dollar [Member] | |
| Derivatives, Fair Value [Line Items] | |
| Total notional value | 76,968 |
| Japanese Yen [Member] | |
| Derivatives, Fair Value [Line Items] | |
| Total notional value | 58,860 |
| Canadian Dollar [Member] | |
| Derivatives, Fair Value [Line Items] | |
| Total notional value | 15,073 |
| Mexican Peso [Member] | |
| Derivatives, Fair Value [Line Items] | |
| Total notional value | 12,659 |
| South Korean Won [Member] | |
| Derivatives, Fair Value [Line Items] | |
| Total notional value | 9,033 |
| Australian Dollar [Member] | |
| Derivatives, Fair Value [Line Items] | |
| Total notional value | 8,080 |
| Other [Member] | |
| Derivatives, Fair Value [Line Items] | |
| Total notional value | $ 12,821 |