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Note 11 - Contingencies (Details)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2015
USD ($)
Dec. 31, 2008
USD ($)
Dec. 31, 2003
USD ($)
Dec. 31, 2014
USD ($)
Note 11 - Contingencies (Details) [Line Items]        
Accrual for Environmental Loss Contingencies $ 9,365     $ 9,595
Accrual for Environmental Loss Contingencies, Payments 825      
Accrual for Environmental Loss Contingencies, Increase (Decrease) for Currency Translation 60      
Accrual for Environmental Loss Contingencies, Period Increase (Decrease) 655      
Bayonne [Member]        
Note 11 - Contingencies (Details) [Line Items]        
Accrual for Environmental Loss Contingencies 446      
Clifton, New Jersey Site [Member]        
Note 11 - Contingencies (Details) [Line Items]        
Accrual for Environmental Loss Contingencies 1,148      
Carlstadt, New Jersey Site [Member]        
Note 11 - Contingencies (Details) [Line Items]        
Accrual for Environmental Loss Contingencies 1,048      
Berry's Creek Site [Member]        
Note 11 - Contingencies (Details) [Line Items]        
Accrual for Environmental Loss Contingencies $ 244      
Number of Subsidiaries Notice Received 2      
Maybrook Site [Member]        
Note 11 - Contingencies (Details) [Line Items]        
Accrual for Environmental Loss Contingencies $ 322      
Harriman Site [Member]        
Note 11 - Contingencies (Details) [Line Items]        
Accrual for Environmental Loss Contingencies 3,615      
Scientific Chemical Processing (SCP) Superfund Site [Member]        
Note 11 - Contingencies (Details) [Line Items]        
Accrual for Environmental Loss Contingencies $ 987      
Number of Other Sites Named PRP of SCP Superfund Site 130      
Site Contingency, Recovery from Third Party of Environmental Remediation Cost $ 632      
Newark Bay Complex Litigation [Member]        
Note 11 - Contingencies (Details) [Line Items]        
Number of Subsidiaries Notice Received 2      
Lorazepam and Clorazepate [Member]        
Note 11 - Contingencies (Details) [Line Items]        
Loss Contingency, Number of Plaintiffs   4    
Judgment Amount Against Parties Payable Jointly and Severally   $ 19,200    
Loss Contingency, Damages Awarded, Value   16,709    
Loss Contingency, Prejudgment Interest   7,500    
Pending Increase (Decrease) in Damages Award Value   $ (9,600)    
Indemnification Agreement [Member] | Lorazepam and Clorazepate [Member]        
Note 11 - Contingencies (Details) [Line Items]        
Payment in Exchange for Release and Full Indemnity Against Future Cost or Liabilities     $ 12,415  
Minimum [Member] | Harriman Site [Member]        
Note 11 - Contingencies (Details) [Line Items]        
Site Contingency Loss Exposure Estimated Range $ 2,000      
Maximum [Member] | Harriman Site [Member]        
Note 11 - Contingencies (Details) [Line Items]        
Site Contingency Loss Exposure Estimated Range $ 7,000