Stock Compensation Plans Stock Compensation Plans (Summary of Vesting Date Fair Value of Awards - Restricted Stock Legacy Encore Plan) (Details 8) (Restricted Stock Encore [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restricted Stock Encore [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of restricted stock vested	$ 584	$ 2,259	$ 6,571