Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts Receivable	$ 13,705	$ 16,149
Common Class A
Common stock, par value	$ 1	$ 1
Common stock, shares outstanding	6,290,414	6,770,689
Common Class B
Common stock, par value	$ 1	$ 1
Common stock, convertible conversion ratio	1	1
Common stock, shares outstanding	1,581,106	1,582,310