Accounting For Stock-Based Compensation (Schedule Of Stock Option Valuation Assumptions) (Details) - $ / shares	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Jun. 30, 2015
Shares, Granted (in shares)		0	0
Dividend yield (as a percent)		0.00%
Maximum
Risk-free interest rates (as a percent)		1.85%
Expected life in years		7 years 6 months
Expected volatility (as a percent)		46.67%
Weighted average fair value on grant date (in dollars per share)		$ 8.71
Minimum
Risk-free interest rates (as a percent)		1.24%
Expected life in years		5 years 1 month 6 days
Expected volatility (as a percent)		42.22%
Weighted average fair value on grant date (in dollars per share)		$ 3.68
Restricted Stock Units (RSUs)
Shares, Granted (in shares)	0
Stock Issued During Period, Shares, Restricted Stock Award, Gross		0