Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 25, 2011
Accounts receivable, allowance for doubtful accounts (in Dollars)	$ 1,742	$ 2,023
Preferred stock, par value (in Dollars per share)	$ 5	$ 5
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares outstanding	0	0
Common Class A [Member]
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	27,215,117	22,548,741
Common stock, par value (in Dollars per share)	$ 5	$ 5
Common Class B [Member]
Common stock, shares authorized	600,000	600,000
Common stock, shares issued	548,564	548,564
Common stock, par value (in Dollars per share)	$ 5	$ 5