Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Nature of Operations and Summary of Significant Accounting Policies (Narrative) (Details)

v3.19.3.a.u2
Nature of Operations and Summary of Significant Accounting Policies (Narrative) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
item
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Accounting Policies [Abstract]      
Number of operating segments | item 1    
Accounts Receivable and Net investment in sales-type leases      
Allowance for doubtful accounts receivable $ 939 $ 1,110  
Allowance for doubtful accounts due to investment in sales-type leases 414 1,689  
Inventories      
Inventory write-downs for obsolescence and excess inventories 11,700 11,200  
Other Intangible Assets      
Impairment of Intangible Assets (Excluding Goodwill)   2,200 $ 2,200
Advertising costs 16,200 15,900 14,200
Retirement Plans and Employee Rights Upon Termination      
Severance pay liabilities 4,200 4,000  
Deposit in insurance policies and pension funds 3,300 3,100  
Severance expenses 4,000 4,100 3,100
401(k) Plan contributions $ 4,200 $ 3,200 $ 3,700
Research and Development Costs      
Maximum additional tax rate on distribution of dividends 10.00%    
Settlement percentage 50.00%    
Vesting period 4 years    
Stock-Based Compensation      
Expected dividend rate (as a percent) 0.00%    
Business Combinations      
Increase in retained earnings $ 1,400