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

12 Months Ended

Dec. 31, 2015

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, 2015:

Performance Share Grants with Performance Conditions
Below threshold performance	—
Threshold performance	83,628
Target performance	170,893
Maximum performance	83,268

Summary of stock grant activity

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

	December 31, 2015		December 31, 2014		December 31, 2013
Stock Grants Outstanding Beginning of the Year at Target Achievement	237,045		265,701		688,041
New Stock Grants/Additional shares due to maximum achievement	114,221		165,996		192,348
Vested Grants	(52,436	)	(41,694	)	(361,886	)
Expired/Forfeited Grants	(26,477	)	(152,958	)	(252,802	)
Stock Grants Outstanding at Target Achievement	272,353		237,045		265,701

Summary of stock compensation costs for Employee and NDSI Plans

The following table summarizes stock compensation costs for the Company's 1998 Stock Incentive Plan, or the Employee 1998 Plan, and NDSI Plan for the following periods:

Employee 1998 Plan:	December 31, 2015		December 31, 2014		December 31, 2013
Expensed	$	2,989,000	$	2,645,000	$	161,000
Capitalized	165,000		95,000		294,000
	3,154,000		2,740,000		455,000
NDSI Plan	768,000		889,000		768,000
	$	3,922,000	$	3,629,000	$	1,223,000