Equity Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2018

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

Schedule of Valuation Assumptions of Options Granted

The fair value of each option granted was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions for the years ended December 31:

	2018		2017		2016
Risk-free interest rate	2.7	%	2.2	%	1.8	%
Expected life	5.5 years		5.5 years		5.5 years
Expected volatility	34	%	33	%	42	%
Expected dividend yield	—	%	—	%	—	%

Schedule of Nonvested Share Activity

The following is a summary of the option activity as of December 31, 2018 and changes during the year then ended:

In thousands except per share amounts and years
	Shares	Weighted-Average Exercise Price		Weighted- Average Remaining Contractual Term (years)	Aggregate Intrinsic Value
Outstanding at December 31, 2017	433	$	33.37
Granted	246	$	21.49
Exercised	(54)	$	16.48
Forfeited/Cancelled	(2)	$	36.08
Outstanding at December 31, 2018	623	$	30.14	7.7	$	734
Options exercisable at December 31, 2018	254	$	29.36	5.8	$	699
Unvested at December 31, 2018	369	$	30.68	3.1	$	35

Schedule of Nonvested Restricted Stock Units Activity

The following is a summary of the Company’s unvested restricted shares for the year ended and as of December 31, 2018:

In thousands except per share amounts
Outstanding Restricted Shares	Shares	Weighted-Average Grant-Date Fair Value
Nonvested at December 31, 2017	219	$	44.77
Granted	172	$	25.19
Vested	(79)	$	31.26
Forfeited/Cancelled	(8)	$	50.56
Nonvested December 31, 2018	304	$	37.02