Annual report pursuant to Section 13 and 15(d)

Intangible Assets and Goodwill Narrative (Details)

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Intangible Assets and Goodwill Narrative (Details) - USD ($)
12 Months Ended
Oct. 03, 2014
Dec. 31, 2019
Dec. 31, 2018
Goodwill And Intangible Assets [Line Items]      
Goodwill   $ 7,203,000 $ 6,971,000
Goodwill impairment   0  
Kulu Valley Ltd      
Goodwill And Intangible Assets [Line Items]      
Goodwill acquired during period $ 8,800,000    
Goodwill   $ 7,200,000  
Intangible assets acquired during period $ 6,700,000