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Discontinued Operations - Warranty Reserves (Details 2) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Movement in Standard Product Warranty Accrual [Roll Forward]    
Warranty Reserve Balance, January 1 $ 2,103 $ 2,527
Additional Provision for Warranties Made During the Year
Settlements Made During the Year (24) (115)
Decrease in Warranty Estimates for Prior Years (530) (100)
Warranty Reserve Balance, September 30 $ 1,549 $ 2,312