Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Stock Options [Member]

Details Of Weighted-Average Grant-Date Fair Values And Assumptions Used For Estimating Fair Values

	2019			2018			2017
Weighted-average grant-date fair value	$	6.47		$	8.91		$	7.29
Expected life, in years		5.6			5.4			6.0
Risk-free interest rate		2.5	%		2.7	%		1.9% - 2.3	%
Expected volatility		33.9	%		39.7	%		48.0 % - 51.5	%
Expected dividend yield		—	%		—	%		—	%

Summary of Stock-Based Compensation Activity

					Weighted-
					Average
			Weighted-		Remaining		Aggregate
	Number of		Average		Contractual		Intrinsic
	Options		Exercise Price		Term		Value
Outstanding at December 31, 2018		1,578,389	$	11.32
Granted		279,000		17.89
Exercised		(116,790)		9.00
Forfeited or expired		(11,600)		18.27
Outstanding at December 31, 2019		1,728,999	$	12.49		5.4	$	5,960
Exercisable at December 31, 2019		1,296,030	$	14.57		4.3	$	5,923
Vested or expected to vest at December 31, 2019		1,728,999	$	12.49		5.4	$	5,960

Information Related to Stock Options Exercised

	2019		2018		2017
	(Dollars in thousands)
Proceeds from the exercise of stock options	$	1,052	$	727	$	4,283
Intrinsic value of stock options exercised		750		1,590		2,780
Income tax benefit related to stock options exercised		158		334		980

Summary of Stock-Based Compensation Expense

	2019		2018		2017
	(Dollars in thousands)
Compensation expense recorded in Selling, general and administrative expenses	$	1,801	$	1,528	$	1,560
Deferred income tax benefits related to compensation expense		378		321		328
Total fair value of stock options vested		1,387		1,390		1,370
Unrecognized compensation cost		1,469		606		587
Expected weighted-average recognition period for unrecognized compensation, in years		2.2		2.7		2.0

Performance Share Units [Member]

Summary of Stock-Based Compensation Activity

		Weighted-
		Average
		Remaining
	Number of	Contractual
	Units	Term
Outstanding at December 31, 2018	526,300
Granted	344,224
Earned	(406,300)
Forfeited or expired	(12,224)
Outstanding at December 31, 2019	452,000	1.0
Vested or expected to vest at December 31, 2019	452,000	1.0

Summary of Stock-Based Compensation Expense

	2019		2018		2017
	(Dollars in thousands)
Compensation expense recorded in Selling, general and administrative expenses	$	3,607	$	4,152	$	6,772
Deferred income tax benefits related to compensation expense		757		872		1,422
Unrecognized compensation cost		2,730		3,599		3,726
Expected weighted-average recognition period for unrecognized compensation, in years		1.6		1.4		1.4