Income Taxes (Schedule Of Income Tax Reconciliation Items) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Income Taxes [Abstract]
Expected tax provision	$ 12,022	$ 4,566		$ 9,581
Foreign tax rate differential	(2,153)	(648)		(654)
Change in valuation allowance	(905)	129		1,531
State and local tax provision	(541)	307		1,133
Prior year adjustments	(79)	(954)		(514)
Unrecognized tax benefits	(8,498)	262		946
Advanced to Overseas Subsidiary	(7,620)
Impact of Tax Act	13,018
Non-taxable insurance proceeds	(1,871)
Indefinite reinvestment assertion				(3,089)
State rate and law change				(3,635)
Other	(36)	358		(151)
Actual tax provision	$ 3,337	$ 4,020	[1]	$ 5,148	[1]

[1] Certain prior year balances have been reclassified to conform to the 2017 presentation (see Note 2 - Summary of Significant Accounting Policies - Reclassifications).