Stock Option Plans, Stock Grants, Stock Appreciation Rights and Employee Stock Purchase Plan (Tables)

12 Months Ended

Dec. 31, 2013

Amounts Charged to Expense for Stock-based Compensation

The amounts charged to expense for stock-based compensation for the years ended December 31, 2013, 2012 and 2011 are presented in the following table:

	Year Ended December 31,
In thousands	2013		2012		2011
Restricted stock units	$	3,369	$	7,380	$	139
Directors restricted stock grants(1)		413		390		248
Employee stock purchase plan		132		82		173
Stock appreciation rights(2)		—		—		(100	)
Total stock-based compensation	$	3,914	$	7,852	$	460

(1) - Relates to non-employee directors serving on the Parent Company’s Board of Directors, all of whom have been elected by the Company’s stockholders, as well as non-employee directors serving on NUAL’s Board of Directors.

(2) - All outstanding stock appreciation rights were exercised during 2011.

Unvested Restricted Stock Grants Outstanding

Unvested restricted stock units outstanding as of December 31, 2013, 2012 and 2011, and changes during the years ended on those dates, are presented in the following table:

	December 31,
	2013			2012			2011
Beginning balance		587,629			526,972			590,661
Granted—Performance		114,463			97,145			86,118
Granted—Non Performance		155,463			146,915			98,640
Total Granted		269,926			244,060			184,758
Vested—Performance Earned		(15,714	)		—			(22,993	)
Vested—Performance Unearned		(57,585	)		(46,998	)		(42,334	)
Vested—Non Performance		(60,183	)		(91,323	)		(149,738	)
Total Vested		(133,482	)		(138,321	)		(215,065	)
Forfeited		(97,261	)		(45,082	)		(33,382	)
Ending balance		626,812			587,629			526,972

Stock Options Outstanding

Stock options outstanding as of December 31, 2013, 2012 and 2011 are as follows:

	December 31,
	2013					2012					2011
				Average					Average					Average
	# of Shares			Exercise Price		# of Shares			Exercise Price		# of Shares			Exercise Price
Beginning balance		90,250		$	29.94		105,250		$	29.50		157,500		$	27.13
Granted		—			—		—			—		—			—
Exercised		(83,500	)	$	29.88		(15,000	)	$	26.90		(52,250	)	$	22.35
Expired or forfeited		—			—		—			—		—		$	—
Ending balance		6,750		$	30.65		90,250		$	29.94		105,250		$	29.50
Number of options exercisable		6,750		$	30.65		90,250		$	29.94		105,250		$	29.50

Summarized Information about Options Outstanding

The following table summarizes information about stock options outstanding as of December 31, 2013:

			Average
	Outstanding		Remaining		Average		Average Aggregate		Exercisable		Average		Average Aggregate
Price Range	Options		Contract Life		Exercise Price		Intrinsic Value		Options		Exercise Price		Intrinsic Value
$21 to $30		5,250		0.2	$	29.11	$	34.05		5,250	$	29.11	$	34.05
$31 to $37		1,500		1.7	$	36.03	$	27.13		1,500	$	36.03	$	27.13
Total		6,750		1.9						6,750

SARs Outstanding

SARs outstanding as of December 31, 2013, 2012 and 2011 were as follows:

	December 31,
	2013				2012				2011
			Average				Average					Average
			Exercise				Exercise					Exercise
	SARs		Prices		SARs		Prices		SARs			Prices
Beginning balance		—	$	—		—	$	—		16,500		$	18.74
Granted		—		—		—		—		—			—
Exercised		—		—		—	$	—		(16,500	)	$	18.74
Expired or forfeited		—		—		—		—		—			—
Ending balance		—	$	—		—	$	—		—		$	—
Number of SARs exercisable		—	$	—		—	$	—		—		$	—