CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Receivables, allowance	$ 12,083	$ 12,522
Preferred stock, issued
Common stock, shares issued	94,831,377	92,781,767
Common stock, shares outstanding	94,831,377	92,781,767
Common stock, par value	$ 0.01	$ 0.01