Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangible Assets - Additional Information (Details)

v3.7.0.1
Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Finite Lived Intangible Assets [Line Items]      
Average estimated useful life for intangible assets 12 years   12 years
Amortization of other intangible assets $ 1,273 $ 1,273  
Patents      
Finite Lived Intangible Assets [Line Items]      
Intangible assets expiration year 2023    
Average estimated useful life for intangible assets 10 years    
Minimum      
Finite Lived Intangible Assets [Line Items]      
Intangible assets estimated useful lives 10 years    
Maximum      
Finite Lived Intangible Assets [Line Items]      
Intangible assets estimated useful lives 25 years