Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

Share-Based Compensation [Abstract]

Summary of Restricted Stock Unit and Stock Option Activity

	Restricted Stock Units			Stock Options
		Weighted-Average
		Grant Date			Weighted-Average
		Fair Value			Exercise/(Strike)
	Number	Per Share		Number	Price Per Share
Outstanding as of December 31, 2012	1,141,666	$	18.12	1,315,465	$	18.91
Granted	246,668		19.87	200,000		20.80
Expired or forfeited	(176,667)		13.66	(140,000)		13.04
Vested/exercised	(849,999)		19.91	(80,465)		13.16
Outstanding as of December 31, 2013	361,668	$	17.30	1,295,000	$	20.20
Granted	996,597		27.10	714,000		18.40
Expired or forfeited	(20,000)		24.77	-		-
Vested/exercised	(281,668)		16.76	(20,000)		12.54
Outstanding as of December 31, 2014	1,056,597	$	26.54	1,989,000	$	19.63
Granted	321,500		23.07	259,000		16.07
Expired or forfeited	(281,560)		23.89	(250,000)		15.97
Vested/exercised	(370,940)		27.07	-		-
Outstanding as of December 31, 2015	725,597	$	25.28	1,998,000	$	19.62

Weighted-Average Assumptions Used in Estimating Grant Date Fair Values of Stock Option Awards

	For the Years Ended December 31,
	2015			2014			2013
Total stock options granted		259,000			714,000			200,000
Weighted-average grant date fair value	$	12.48		$	17.69		$	7.90
Weighted-average assumptions:
Risk-Free Rate		1.3	%		1.8	%		0.8	%
Expected life of options(a)		4.7			5.7			4.1
Expected volatility(b)		45.5	%		50.6	%		51.2	%
Expected quarterly dividends	$	—		$	—		$	—

(a) Calculated using the simplified method due to the terms of the stock options and the limited pool of grantees.

(b) Calculated using historical volatility of the Company’s common stock over periods commensurate with the expected life of the option.