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Revenue - Schedule of Deferred Charges Activity (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2019
USD ($)
Deferred charges beginning balance $ 1,438
Additions during the period 727
Recognized as cost of sales (777)
Deferred charges ending balance 1,388
September 30, 2020 [Member]  
Recognized as cost of sales 690
September 30, 2021 [Member]  
Recognized as cost of sales 543 [1]
September 30, 2022 and Thereafter [Member]  
Recognized as cost of sales $ 155 [1]
[1] Amounts included in other assets in the Company's unaudited condensed consolidated balance sheets at September 30, 2019.