Stock Compensation (Summary Of Stock Compensation Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 2,112	$ 865	$ 3,285	$ 1,784
RSA, PSA, RSU, And PSU Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	1,625	701	2,490	1,413
Stock Option And ESPP Option Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 487	$ 164	$ 795	$ 371