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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule Of Share Based Compensation Shares Authorized Under Stock Plans Issued And Avaliability

The following table summarizes the number of shares of common stock authorized for use under the Plan, the number of stock-based awards granted (net of expired or cancelled awards) under the Plan and the number of shares of common stock available for the grant of stock-based awards under the Plan:



Common stock authorized	23,466,000
Stock-based awards, including restricted stock and stock options granted, net of expired or cancelled	(19,070,000	)
Common stock available for grant of stock-based awards as of June 30, 2015	4,396,000

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

Total equity-based compensation for the three and six months ended June 30, 2015 and 2014 is as follows:



	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Restricted stock	$	3,568	$	3,728	$	7,328	$	7,513
Stock options	756		1,124		1,754		2,263
Total	$	4,324	$	4,852	$	9,082	$	9,776

Schedule Of Cash Proceeds And Intrinsic Values For Stock Options Exercised

Cash proceeds and intrinsic values related to total stock options exercised during the three and six months ended June 30, 2015 and 2014 are as follows:



	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Proceeds from stock options exercised	$	2,897	$	511	$	19,703	$	1,032
Intrinsic value of stock options exercised	$	1,848	$	549	$	29,294	$	1,135

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used

The following weighted average assumptions were used for stock options granted during the six months ended June 30, 2015 and 2014:



	2015	2014
Volatility	22.4% to 28.3%	29.0% to 31.8%
Risk free interest rate	0.99% to 1.60%	1.06% to 1.74%
Expected life in years	4.1 to 5.1	4.1 to 5.1
Dividend yield	0.00%	0.00%
Weighted average fair value	$8.70	$10.10

Schedule of Share-based Compensation, Stock Options, Activity

Activity relating to stock options granted under the Company’s plans and outside the plans during the six months ended June 30, 2015 is as follows:



	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at January 1, 2015	3,428,000		$	19.48
Granted	59,000		35.78
Exercised	(1,309,000	)	15.06
Cancelled/Forfeited	(9,000	)	29.59
Outstanding at June 30, 2015	2,169,000		$	22.57	5.0 years	$	42,046
Exercisable at June 30, 2015	1,457,000		$	17.55	2.5 years	$	35,558

Schedule of Nonvested Share Activity

The following table summarizes restricted stock activity during the six months ended June 30, 2015 and 2014:



	2015				2014
	Number of Shares		Weighted Average Fair Value at Grant Date		Number of Shares		Weighted Average Fair Value at Grant Date
Non-vested at January 1,	4,067,000		$	24.69	4,257,000		$	24.24
Granted	246,000		36.40		161,000		35.12
Vested	(222,000	)	22.94		(228,000	)	24.28
Forfeited	(68,000	)	34.27		(2,000	)	27.03
Non-vested at June 30,	4,023,000		$	25.16	4,188,000		$	24.51