Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Stockholders' deficiency:
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	10,000,000	10,000,000
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	93,708,273	93,658,273
Common stock, shares outstanding	89,948,411	89,898,411
Common stock in treasury, shares	3,759,862	3,759,862