Shareholders' Equity (Fair Value of Option Grants) (Details) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||
| Expected option term, years | 6 years 6 months | |
| Expected volatility factor | 27.00% | |
| Risk-free rate | 0.96% | |
| Minimum [Member] | ||
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||
| Expected option term, years | 4 years | |
| Expected volatility factor | 23.80% | |
| Risk-free rate | 0.90% | |
| Maximum [Member] | ||
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||
| Expected option term, years | 6 years 6 months | |
| Expected volatility factor | 26.70% | |
| Risk-free rate | 1.28% | |