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Other Current Assets Other Current Assets (Tables)
 3 Months Ended
Mar. 31, 2020
Other current assets [Line Items]  
Schedule of Other Current Assets [Table Text Block]
The components of other current assets are as follows:
 
March 31,
2020
 
December 31,
2019
Contract assets
$
26,224

 
$
22,257

Other
5,909

 
5,591

Total other current assets
$
32,133

 
$
27,848