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Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Reconciliation of basic earnings per share ("EPS") to diluted EPS

The following is a reconciliation of basic earnings per common share to diluted earnings per share:

	Three Months Ended June 30,								Six Months Ended June 30,
(in thousands, except per share amounts)	2015				2014				2015				2014
Net income available to common stockholders	$	21,509			$	20,451			$	31,560			$	32,538
Basic weighted-average shares outstanding	49,254				49,011				49,236				48,955
Dilutive effect of potential common stock equivalents — stock options and    restricted stock units	219				216				209				191
Diluted weighted-average shares outstanding	49,473				49,227				49,445				49,146
Earnings per common share:
Basic	$	0.44			$	0.42			$	0.64			$	0.66
Diluted	$	0.43			$	0.42			$	0.64			$	0.66
Potentially dilutive securities excluded from earnings per diluted share because their effect is anti-dilutive	—				—				—				—

Stock option and restricted stock unit activity of the entity

The following table represents the Company’s stock option and restricted stock unit activity for the three and six months ended June 30, 2015 and 2014:

	Three Months Ended June 30,								Six Months Ended June 30,
(in thousands)	2015				2014				2015				2014
Stock-based compensation expense recognized in operating expenses	$	2,991			$	3,264			$	6,075			$	5,740
Less: Tax benefit of stock-based compensation expense in provision for           income taxes	1,082				1,163				2,139				2,073
Stock-based compensation expense, net of tax	$	1,909			$	2,101			$	3,936			$	3,667
Fair value of shares vested	$	3,211			$	3,312			$	5,995			$	5,691
Proceeds to the Company from the exercise of stock-based compensation	$	92			$	857			$	5,576			$	2,626
Tax effect from the exercise of stock-based compensation, including shortfall          tax benefits	$	(2	)		$	(51	)		$	(186	)		$	(186	)

	At June 30,
(in thousands)	2015				2014
Stock-based compensation cost capitalized in inventory	$	500			$	508

Summary of financial instruments

The balances of the Company’s primary financial instruments were as follows:

	At June 30,								At December 31,
(in thousands)	2015				2014				2014
Financial instruments	$	92,875			$	96,996			$	99,024

Schedule of effective tax rates and income tax expense

The following table presents the Company’s effective tax rates and income tax expense for the three and six months ended June 30, 2015 and 2014:

	Three Months Ended June 30,								Six Months Ended June 30,
(in thousands, except percentages)	2015				2014				2015				2014
Effective tax rate	38.5		%		36.3		%		38.4		%		37.2		%
Provision for income taxes	$	13,446			$	11,667			$	19,637			$	19,271

Schedule of Restructuring Reserve by Type of Cost

The following table provides a rollforward of the liability balance for these costs incurred as of June 30, 2015:

In thousands	Employee Severance Obligation				Other Associated Costs				Total
Balance at March 31, 2015	$	796			$	85			$	881
Charges	562				461				1,023
Cash payments	(1,123		)		(70		)		(1,193		)
Balance at June 30, 2015	$	235			$	476			$	711

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Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring and/or nonrecurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

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Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

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