XML 35 R24.htm IDEA: XBRL DOCUMENT v3.10.0.1
Revenue from Contracts with Customers (Tables)
 6 Months Ended
Jun. 30, 2018
Revenue from Contract with Customer [Abstract]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]
 
2018
 
2019
 
2020
 
2021
 
2022
 
Total
 
(In Thousands)
Compression service contracts remaining performance obligations
$
1,791

 
$
3,209

 
$
1,027

 
$
253

 
$
77

 
$
6,357