COMMON STOCK AND PREFERRED STOCK (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Changes in Common Stock Issued and Treasury Stock

A summary of changes in common stock issued and treasury stock is presented below.

	Common Stock		Treasury Stock
Balance at December 31, 2009		49,316,913		594,134
Issuance pursuant to stock option and stock-SARS plan		121,969		(547,253	)
Awards of restricted stock		—		(14,390	)
Issuance of deferred shares		6,468		(31,724	)
Balance at December 31, 2010		49,445,350		767
Purchase of treasury stock		—		4,280,000
Issuance pursuant to stock option and stock-SARS plan		122,983		(178,352	)
Awards of restricted stock		—		(12,384	)
Issuance of deferred shares		17,865		(12,671	)
Balance at December 31, 2011		49,586,198		4,077,360
Purchase of treasury stock		—		1,455,111
Issuance pursuant to stock option and stock-SARS plan		32,663		(842,746	)
Awards of restricted stock		—		(10,683	)
Issuance of deferred shares		—		(6,342	)
Balance at December 31, 2012		49,618,861		4,672,700