Income Taxes (Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation [Line Items]
Federal tax at statutory rate(1)	$ 8,523	$ 5,279	$ 15,722
State income taxes, net of federal benefit(2)	1,839	773	(584)
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	(3,480)	(100)	(100)
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount	(1,466)	(1,612)	366
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount	1,282	2,685	0
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	976	3,161	861
Impact of tax rate changes, including Tax Reform	68	193	10,032
Other, net	$ 257	$ 1,629	$ 1,373
Federal statutory rate	21.00%	21.00%	35.00%
Income tax (benefit) expense	$ (15,859)	$ 9,259	$ 25,214
Excess tax benefit share based compensation	500	900	800
Section 199 Manufacturing Deduction [Member]
Effective Income Tax Rate Reconciliation [Line Items]
Effective Income Tax Rate Reconciliation, Deduction, Amount	0	0	1,616
Entity Classification Election [Member]
Effective Income Tax Rate Reconciliation [Line Items]
State income taxes, net of federal benefit(2)	900
Effective Income Tax Rate Reconciliation, Deduction, Amount	24,813	0	0
Foreign Derived Intangible Income Benefit [Member]
Effective Income Tax Rate Reconciliation [Line Items]
Effective Income Tax Rate Reconciliation, Deduction, Amount	0	2,186	0
Equity awards granted to employees
Effective Income Tax Rate Reconciliation [Line Items]
Effective Income Tax Rate Reconciliation, Deduction, Amount	482	910	851
Discontinued Operations, Disposed of by Sale [Member] | Foreign Derived Intangible Income Benefit [Member]
Effective Income Tax Rate Reconciliation [Line Items]
Effective Income Tax Rate Reconciliation, Deduction, Amount	3,400
Compensation [Member]
Effective Income Tax Rate Reconciliation [Line Items]
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount	891	347	11
Acquisition-related Costs [Member]
Effective Income Tax Rate Reconciliation [Line Items]
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount	$ 546	$ 0	$ 0