Shareholders' Equity, Stock Plans and Preferred Stock (Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value) (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividends		2.15%
Weighted average expected term (years)		6 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility (range)	44.00%
Risk free interest rate (range)	1.52%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility (range)	49.00%
Risk free interest rate (range)	1.87%