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Income Taxes (Summary of Effective Income Tax Rate For Continuing Operations) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]        
Income tax expense (benefit) at federal statutory rate   $ (5,219) $ 9,689 $ (8,122)
Federal statutory rate 21.00% 35.00% 35.00% 35.00%
State taxes, net of federal income tax benefit   (4.40%) 2.30% 0.30%
Non-deductible expenses   (4.20%) 1.40% (1.90%)
Effective Income Tax Rate Reconciliation, Tax Credit, Amount   $ 0 $ 0 $ (120)
Effective Income Tax Rate Reconciliation, Tax Credit, Percent   0.00% 0.00% 0.50%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount   $ 633.000 $ 396.000 $ 448.000
effective income tax rate reconciliation, non-deductible goodwill and asset impairment   (1.50%) 0.00% (68.10%)
Foreign rate differences   (17.10%) 1.80% 3.10%
effective income tax rate reconciliation, valuation allowance due to foreign losses   $ 20,757 $ (416) $ 3
Effective Income Tax Rate Reconciliation, Valuation Allowance Due To Foreign Losses And Impairments, Percentage   (139.30%) (1.50%) 0.00%
Effective Income Tax Rate Reconciliation, Valuation Allowance Due To Foreign Losses, Percentage   (0.60%) 1.00% 1.30%
Research and development tax credit   2.50% (2.00%) 1.50%
Domestic Production Activities Deduction   0.00% (2.70%) 3.60%
Changes in estimates related to prior year tax provision   (2.10%) 1.20% (2.10%)
Goodwill impairment   0.00% (0.90%) 2.20%
Effective Income Tax Rate Reconciliation Unremitted Earnings From Foreign Operations, Amount   $ 0.000 $ (256.000) $ (502.000)
Effective Income Tax Rate Reconciliation Capital Loss Carryforwards Valuation Allowance, Amount   83.000 267.000 (311.000)
Effective income tax rate reconciliation, non-deductible goodwill and other impairments, amount   $ 228 $ 13 $ 15,798
Other   411.90% 0.00% 0.00%
Effective income tax rate for continuing operations   356.50% 11.60% (38.50%)
Effective Tax Rate Reconciliation Worthless Stock Deductions, Amount   $ (61,413.000) $ 0.000 $ 0.000
Impact of U.S. Tax Cuts and Jobs Act   $ (4,433) $ 0 $ 0
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent   29.70% 0.00% 0.00%
Effective Income Tax Rate Reconciliation, escrow settlement, amount   $ (4,200.000)    
Settlement of Terphane acquisition escrow   28.20%    
Increase in value of kaléo investment held abroad   $ (2,326) $ (197) $ 2,523
Increase In Value Of kaléo Investment Held Abroad, Percentage   15.60% (0.70%) (10.90%)
Effective Income Tax Rate Reconciliation, Tax Settlement, Other, Amount   $ (420) $ 104 $ 716
Effective Income Tax Rate Reconciliation, Tax Settlement, State and Local, Percent   2.80% 0.40% (3.10%)
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount   $ (375) $ (550) $ (350)
Domestic Production Activities Deduction   0 (735) (840)
Remitted earnings from foreign operations   $ 0 $ (6,574) $ (18)
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent   0.00% (23.70%) 0.10%
Changes in estimates related to prior year tax provision   $ 320 $ 330 $ 489
State taxes, net of federal income tax benefit   656 647 (67)
Foreign rate differences   2,546 499 (719)
Income tax expense (benefit) at effective income tax rate   $ (53,163) $ 3,217 $ 8,928