Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Consolidated Balance Sheets
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized	100,000	100,000
Common stock, shares issued	25,413	25,413
Common stock, shares outstanding	23,427	23,405
Treasury stock, shares	1,986	2,008