Share-based compensation (Tables)

12 Months Ended

Dec. 31, 2015

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

Summary of options, fully vested and exercisable

A summary of activity under our Stock Incentive Plan during the year ended December 31, 2015 is presented below:



Options	Number		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)	Aggregate Intrinsic Value
Outstanding at January 1, 2015	544,171		$	26.85
Exercised	—		—
Forfeited/expired	(100,434	)	25.95
Outstanding, fully vested and exercisable at December 31, 2015 (1)	443,737		$	27.06	2.19	$	—


(1)	As the result of actions in 2011 that were determined to be a "change of control" under the Stock Incentive Plan, all options will remain exercisable for their respective remaining term, regardless of whether the awardees remain employees of Century.

Summary of service-based share awards activity



Service-based share awards
Outstanding at January 1, 2015	464,485
Granted	478,798
Vested	(354,688	)
Forfeited	(47,291	)
Outstanding at December 31, 2015	541,304



	Year ended December 31,
	2015		2014		2013
Weighted average per share fair value of service-based share grants	$	4.21	$	15.31	$	8.19
Total intrinsic value of option exercises	—		1,011		13

Share-based compensation expense

The following table summarizes the compensation cost recognized for the years ended December 31, 2015, 2014 and 2013 for all options, service-based share and performance-based share awards. This expense is included as part of selling, general and administrative expenses in our Consolidated Statements of Operations.



	Year ended December 31,
	2015		2014		2013
Share-based compensation expense reported:
Performance-based share expense	$	1,587	$	1,090	$	475
Service-based share expense	257		244		603
Stock option expense	—		—		—
Total share-based compensation expense before income tax	1,844		1,334		1,078
Income tax	—		—		—
Total share-based compensation expense, net of income tax	$	1,844	$	1,334	$	1,078