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SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Segment Reporting Information [Line Items]    
Noncurrent deferred income tax liabilities $ 658 $ 1,402
Previously Reported [Member]    
Segment Reporting Information [Line Items]    
Current deferred income tax assets  
Noncurrent deferred income tax liabilities  
Sales [Member] | Unaffiliated Castings [Member]    
Segment Reporting Information [Line Items]    
Percentage of sales 1.00%  
Sales [Member] | Firearms [Member]    
Segment Reporting Information [Line Items]    
Percentage of sales 99.00%  
Sales [Member] | Non-US [Member]    
Segment Reporting Information [Line Items]    
Percentage of sales 3.00%  
Accounting Standards Update 2016-09 [Member]    
Segment Reporting Information [Line Items]    
Effective income tax rate reduction 2.00%