Income Taxes (Schedule Of Effective Income Tax Rate For Continuing Operations) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ 8,971,000	$ 18,603,000
Income tax expense at federal statutory rate	21.00%	35.00%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount	$ 669,000	$ 876,000
State taxes, net of federal income tax benefit	1.20%	1.20%
Income tax contingency accruals and tax settlements	0.20%	0.20%
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount	$ (34,000)	$ 132,000
Unremitted earnings from foreign operations	0.00%	(0.20%)
Effective Income Tax Rate Reconciliation Capital Loss Carryforwards Valuation Allowance, Amount	$ 91,000.000	$ 0.000
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	0.00%	(0.80%)
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	$ (188,000)	$ (285,000)
Changes in estimates related to prior year tax provision	(0.10%)	0.20%
Effective Income Tax Rate Reconciliation Unremitted Earnings From Foreign Operations, Amount	$ (0.000)	$ 113,000.000
Non-deductible expenses	0.30%	0.40%
Valuation allowance for foreign operating loss carry-forwards	(0.90%)	0.50%
Research and development tax credit	(0.40%)	(0.50%)
Foreign rate differences	1.60%	1.80%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	$ 537,000	$ 615,000
Foreign tax incentives	(1.50%)	0.00%
effective income tax rate reconciliation, valuation allowance due to foreign losses	$ (383,000)	$ 275,000
Valuation allowance for capital loss carry-forwards	0.20%	0.00%
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Amount	$ 0	$ (390,000)
Domestic production activities deduction	0.00%	(0.70%)
Effective Income Tax Rate Reconciliation, Deduction, Amount	$ 9,834,000.000	$ 5,246,000.000
Effective income tax rate for income from continuing operations	23.00%	9.90%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount	$ 176,000	$ 182,000
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent	0.40%	0.30%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount	$ 123,000.000	$ 229,000.000
Effective Income Tax Rate Reconciliation, Tax Settlement, Other, Amount	100,000	118,000
Increase in value of kaléo investment held abroad	$ 0	$ 2,326,000
Increase In Value Of kaléo Investment Held Abroad, Percentage	0.00%	(4.40%)
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	$ 0	$ 413,000
Effective Income Tax Rate Reconciliation Amount - FDII	$ (309,000)	$ 0
Effective Income Tax Rate Reconciliation Percent - FDII	(0.70%)	0.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	$ (655,000)	$ 0
Effective Income Tax Rate Reconciliation, escrow settlement, amount		$ 4,200,000.000
Effective Tax Rate Reconciliation, Escrow Settlement		(7.90%)
Effective Tax Rate Reconciliation Worthless Stock Deductions, Amount	(0.000)	$ (8,057,000.000)
Effective Tax Rate Reconciliation Worthless Stock		(15.20%)
Effective Income Tax Rate Reconciliation - U.S. Tax on Foreign Branch Income	$ 736,000	$ 0
Effective Income Tax Rate Reconciliation - U.S. Tax on Foreign Branch Income - Percentage	1.70%	0.00%