Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2016

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

Stock-Based Compensation Expense

Stock-based compensation expense was recognized in the Consolidated Statements of Operations as follows:

	Year Ended December 31,
	2016		2015		2014
	(In thousands)
General and administrative expense	$	2,394	$	1,611	$	1,935
	$	2,394	$	1,611	$	1,935

Assumptions Used in Valuation of Option Granted

Assumptions used in the valuation of options granted in each period were as follows:

	Year Ended December 31,
	2016		2015		2014
Service-Based Options
Dividend yield	0	%	0	%	0	%
Expected volatility	25	%	26	%	32	%
Average expected option life	5 years		5 years		5 years
Risk-free interest rate	1.5	%	1.5	%	1.7	%
					Year Ended December 31,
					2014
Performance-Based Options
Dividend yield					0	%
Expected volatility					32	%
Average expected option life					4.8 years
Risk-free interest rate					1.7	%

Option Activity

Option activity of the Company is summarized below:

	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value
	(In thousands)				(In years)	(In thousands)
Outstanding at December 31, 2013	1,828		$	12.51
Options granted	31		19.38
Options exercised	(365	)	11.48
Options canceled/forfeited	(178	)	13.58
Outstanding at December 31, 2014	1,316		12.81
Options granted	31		17.26
Options exercised	(155	)	13.12
Options canceled/forfeited	(107	)	13.06
Outstanding at December 31, 2015	1,085		12.86
Options granted	27		13.03
Options exercised	(170	)	7.56
Options canceled/forfeited	(264	)	11.06
Outstanding at December 31, 2016	678		14.90		4.37	$	314
Options exercisable at December 31, 2016	279		15.37		3.01	122
Options vested and expected to vest at December 31, 2016	678		14.90		4.37	314
Shares available for future grant	2,077

Deferred Stock Unit, Performance-Based Stock Unit and Restricted Stock Activity

Deferred stock unit, performance-based stock unit and restricted stock activity are summarized below:

	Shares		Weighted Average Grant Date Fair Value
	(In thousands)
Unvested at December 31, 2014	455		$	17.09
Granted	286		15.02
Vested	(64	)	17.42
Forfeited	(7	)	18.76
Unvested at December 31, 2015	670		16.16
Granted	413		13.27
Vested	(89	)	16.46
Forfeited	(61	)	17.08
Unvested at December 31, 2016	933		14.79