Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2016

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

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

As of September 30,2016, the unrecognized compensation cost and remaining weighted-average amortization related to stock-based awards were as follows:

					Performance-
					based
			Restricted		Restricted
		Stock	Stock		Stock
(in thousands)		Options	Units		Units(1)
Unrecognized compensation cost		$ 2,183		$ 8,344		$ 2,821
Remaining weighted-average
amortization period	1.3 years			2.4 years		2.0 years
(1) Based on the probable achievement of the performance goals identified in each award.

Weighted-Average Assumptions Used To Value The Options Granted

The weighted-average assumptions used to value the options granted during the nine months endedSeptember 30,2015 were as follows (in thousands):

Options granted	289
Expected term of options	6.4 years
Expected volatility	35%
Risk-free interest rate	1.886%
Dividend yield	zero

Summary Of Stock Options

The following table summarizes activities relating to the Company’s stock options:

			Weighted-
		Weighted-	Average
		Average	Remaining	Aggregate
	Number of	Exercise	Contractual	Intrinsic
(in thousands, except per share data)	Options	Price	Term (Years)	Value
Outstanding as of December 31, 2015	2,580	$20.49
Exercised	(328)	16.89
Forfeited or expired	(415)	23.26
Outstanding as of September 30, 2016	1,837	$20.51	4.48	$ 8,789
Exercisable as of September 30, 2016	1,497	$20.16	3.15	$ 7,810

Restricted Stock Units (RSUs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary Of Stock-Based Awards

The following table summarizes the activities related to the Company’s time-based restricted stock units:

		Weighted-
		Average
	Number of	Grant Date
(in thousands, except per share data)	Units	Fair Value
Non-vested awards outstanding as of December 31, 2015	467	$21.59
Granted	319	21.50
Vested	(198)	21.09
Forfeited	(115)	21.86
Non-vested awards outstanding as of September 30, 2016	473	$21.67

Performance-Based Restricted Stock Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary Of Stock-Based Awards

The following table summarizes the activities related to the Company’s performance-based restricted stock units:

		Weighted-
		Average
	Number of	Grant Date
(in thousands, except per share data)	Units	Fair Value
Non-vested units outstanding as of December 31, 2015	306	$19.77
Granted (1)	184	21.63
Forfeited or expired	(260)	19.62
Non-vested units outstanding as of September 30, 2016	230	$21.44

⁽¹⁾Represents target number of units that can vest based on the achievement of the performance goals.