Stock Compensation - Restricted Stock and Performance Share Grants (Tables)

12 Months Ended

Dec. 31, 2012

Stock Compensation - Restricted Stock and Performance Share Grants [Abstract]

Summary of performance share grants with performance conditions

The following is a summary of the Company's performance share grants with performance conditions for the year ended December 31, 2012:

Performance Share Grants with Performance Conditions
Below threshold performance	—
Threshold performance	97,000
Target performance	615,881
Maximum performance	907,767

Summary of stock grant activity

The following is a summary of the Company’s stock grant activity assuming target achievement for outstanding performance grants for the following twelve month periods ended:

	December 31 2012		December 31 2011		December 31 2010
Stock Grants Outstanding Beginning of the Year at Target Achievement	744,508		782,087		467,110
New Stock Grants/Additional shares due to maximum achievement	113,643		64,679		665,719
Vested Grants	(170,110	)	(36,980	)	(56,409	)
Expired/Forfeited Grants	—		(65,278	)	(294,333	)
Stock Grants Outstanding December 31, 2012 at Target Achievement	688,041		744,508		782,087

Summary of stock compensation costs for Employee and NDSI Plans

The following table summarizes stock compensation costs for the Employee 1998 and NDSI Plans for the following periods:

Employee 1998 Plan:	December 31 2012		December 31 2011		December 31 2010
Expensed	$	5,054,000	$	5,016,000	$	(2,944,000	)
Capitalized	392,000		166,000		—
	5,446,000		5,182,000		(2,944,000		)
NDSI Plan	386,000		325,000		—
	$	5,832,000	$	5,507,000	$	(2,944,000	)