Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Allowance For Bad Debt	$ 14,120	$ 12,317
Preferred stock - par value per share	$ 0.01	$ 0.01
Preferred stock - authorized shares	10,000,000	10,000,000
Common stock - par value per share	$ 0.01	$ 0.01
Common stock - authorized shares	125,000,000	125,000,000
Common stock - issued shares	44,786,000	44,786,011
Common stock - outstanding shares	30,410,000	31,590,101
Treasury shares	14,376,000	13,195,910