Share-based compensation (Tables)

12 Months Ended

Dec. 31, 2016

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, 2016 is presented below:

Options	Number		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)	Aggregate Intrinsic Value
Outstanding at January 1, 2016	443,737		$	27.06
Exercised	—		—
Forfeited/expired	(84,167	)	36.06
Outstanding, fully vested and exercisable at December 31, 2016 (1)	359,570		$	24.95	1.61	$	424

(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, 2016	541,304
Granted	528,189
Vested	(197,724	)
Forfeited	(130,733	)
Outstanding at December 31, 2016	741,036

	Year ended December 31,
	2016		2015		2014
Weighted average per share fair value of service-based share grants	$	7.14	$	4.21	$	15.31
Total intrinsic value of option exercises	—		—		1,011

Share-based compensation expense

The following table summarizes the compensation cost recognized for the years ended December 31, 2016, 2015 and 2014 for all options, service-based and performance-based share awards. The compensation cost is included as part of selling, general and administrative expenses in our Consolidated Statements of Operations.

	Year ended December 31,
	2016		2015		2014
Share-based compensation expense reported:
Performance-based share expense	$	1,441	$	1,587	$	1,090
Service-based share expense	1,263		257		244
Total share-based compensation expense before income tax	2,704		1,844		1,334
Income tax	—		—		—
Total share-based compensation expense, net of income tax	$	2,704	$	1,844	$	1,334