Short-Term Borrowings (Schedule of Short-Term Borrowings) (Details) - Revolving Credit Facility - USD ($) $ in Millions |
Mar. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Short-term Debt [Line Items] | ||
| Credit facilities borrowings | $ 15.0 | $ 15.0 |
| Short-term Debt, Weighted Average Interest Rate | 1.50% | 1.28% |