XML 73 R59.htm IDEA: XBRL DOCUMENT v3.19.1
Foreign Operations (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Foreign operations:                              
Total sales $ 73,162,000 $ 64,676,000 $ 68,601,000 $ 63,046,000 $ 39,065,000 $ 38,494,000 $ 47,368,000 $ 36,746,000 $ 49,072,000 $ 41,336,000 $ 39,006,000 $ 45,468,000 $ 269,485,000 $ 161,673,000 $ 174,882,000
Property, plant and equipment — net 80,657,000       68,631,000               80,657,000 68,631,000  
United States                              
Foreign operations:                              
Total sales                         181,207,000 103,513,000 119,018,000
Property, plant and equipment — net 37,778,000       40,594,000               37,778,000 40,594,000  
MEXICO                              
Foreign operations:                              
Total sales                         74,029,000 52,496,000 51,389,000
Property, plant and equipment — net 34,155,000       28,037,000               34,155,000 28,037,000  
CANADA                              
Foreign operations:                              
Total sales                         12,494,000 5,664,000 4,475,000
Property, plant and equipment — net $ 8,724,000       $ 0               8,724,000 0  
Other Geographical Location [Member]                              
Foreign operations:                              
Total sales                         $ 1,755,000 $ 0 $ 0