Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2015

Stock-Based Compensation [Abstract]

Summary of Restricted Stock Unit Awards Activity

				Aggregate
		Weighted-Average		Intrinsic
	Number	Grant Date		Value
	of Shares	Fair Value		(in thousands)
Granted and Unvested - January 1, 2015	1,056,597	$	26.54	$	25,432
Activity during the nine months ended September 30, 2015:
Vested	(370,940)	$	27.07	$	7,983
Granted	321,500	$	23.07	$	5,292
Forfeited	(31,560)	$	28.19	$	—
Total Granted and Unvested - September 30, 2015	975,597	$	26.70	$	16,058
Approved for grant	754,500		(a)	$	12,419
Total Awarded and Unvested - September 30, 2015	1,730,097		(a)	$	28,477

Grant date fair value cannot be determined currently because the related performance targets for future years have not yet been established by the Compensation Committee for certain grants.

Vesting Schedule of Outstanding Unvested Restricted Stock Unit Awards

	Number
Vesting Date	of Awards
2015	-
2016	302,500
2017	942,597
2018	311,000
2019	174,000
	1,730,097

Summary of Stock Options Activity

		Weighted-Average
	Number	Grant Date		Exercise
	of Shares	Fair Value		Price
Granted and Outstanding - January 1, 2015	1,989,000	$	12.75	$	19.63
Activity during the nine months ended September 30, 2015:
Granted	259,000	$	12.48	$	16.07
Exercised	—	$	—	$	—
Forfeited	—	$	—	$	—
Total Granted and Outstanding - September 30, 2015	2,248,000	$	11.93	$	19.22
Approved for grant	722,000		(a)	$	20.58
Total Awarded and Outstanding - September 30, 2015	2,970,000		(a)	$	19.55

Grant date fair value cannot be determined currently because the related performance targets for future years have not yet been established by the Compensation Committee for certain grants.

Key Assumptions Used in Estimating Grant Date Fair Value of Stock Option Awards

	Award Year
		2015			2013			2012
Number of options granted during 2015		100,000			9,000			150,000
Risk-free interest rate		1.46	%		1.77	%		1.15	%
Expected life of options (years)		5.50			5.68			4.06
Expected volatility of underlying stock		45.11	%		43.92	%		45.92	%
Expected quarterly dividends (per share)	$	—		$	—		$	—