CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
CURRENT ASSETS:
Accounts receivable, allowances for discounts and doubtful accounts	$ 6,709	$ 6,779
Stockholders' equity:
Common Stock - par value (in dollars per share)	$ 2.00	$ 2.00
Common Stock, Authorized (in shares)	30,000,000	30,000,000
Common Stock, issued (in shares)	23,936,036	23,936,036
Treasury stock - at cost (in shares)	1,116,155	1,276,044