Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Calculation of Basic and Diluted Earnings per Share

The following table sets forth the calculation of basic and diluted earnings per share.

			Year Ended December 31,
(in thousands, except per share data)			2015		2014		2013
Net income		$	95,401	$	81,241	$	110,945
Denominator for basic earnings per share – weighted-
	average number of common shares outstanding
	during the period		51,573		53,538		54,213
Incremental common shares attributable to exercise of
	dilutive options		318		450		324
Incremental common shares attributable to outstanding
	restricted shares and restricted stock units		197		234		242
Denominator for diluted earnings per share			52,088		54,222		54,779
Basic earnings per share		$	1.85	$	1.52	$	2.05
Diluted earnings per share		$	1.83	$	1.50	$	2.03

Schedule Of Unrecognized Compensation Cost And Remaining Weighted-Average Amortization Stock-Based Awards

								Performance-
								based
						Restricted		Restricted
		Stock		Restricted		Stock		Stock
(in thousands)		Options		Shares		Units		Units(1)
Unrecognized compensation cost	$	4,194	$	84	$	7,169	$	2,301
Remaining weighted-average
amortization period		1.6 years		0.1 years		2.2 years		1.8 years
(1) Based on the probable achievement of the performance goals identified in each award.

Summary Of Weighted-Average Assumptions Used To Value Option Grants

		Year Ended December 31,
(in thousands)		2015	2014	2013
	Options granted	289	378	348
	Expected term of options	6.4 years	7.0 years	7.4 years
	Expected volatility	35%	39%	42%
	Risk-free interest rate	1.886%	2.081%	1.396%
	Dividend yield	zero	zero	zero

Schedule of Adjustments to Previously Reported Amounts

The effect on certain line items in the December 31, 2014 consolidated balance sheet was as follows:

		December 31, 2014
	(as previously
(in thousands)		reported)		(as revised)
Prepaids and other assets	$	30,453	$	29,018
Income taxes payable		5,470		5,450
Retained earnings	$	645,500	$	644,085

The effect on certain line items in the 2014 and 2013 consolidated statements of income as previously reported was as follows:

		Year Ended				Year Ended
			December 31, 2014			December 31, 2013
		(as previously				(as previously
(in thousands)			reported)	(as revised)			reported)	(as revised)
Other expense		$	(452)	$	(1,673)	$	(101)	$	(315)
Income tax expense			17,408		17,388		5,018		5,018
Net income		$	82,442	$	81,241	$	111,159	$	110,945
Earnings per share:
	Basic	$	1.54	$	1.52	$	2.05	$	2.05
	Diluted	$	1.52	$	1.50	$	2.03	$	2.03

The effect on certain line items in the 2014 and 2013 consolidated statements of cash flows as previously reported was as follows:

		December 31, 2014				December 31, 2013
	(as previously				(as previously
(in thousands)		reported)		(as revised)		reported)		(as revised)
Net cash provided by operations	$	136,601	$	135,440	$	99,077	$	98,863
Effect of exchange rate changes	$	(2,483)	$	(1,262)	$	724	$	938