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Organization and Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2018
Accounting Policies [Abstract]  
Estimated useful life of property, plant and equipment
Property, plant and equipment are recorded at cost and depreciated using the straight-line method over their estimated useful lives as follows:
Compression equipment, facilities and other fleet assets
3 to 30 years
Buildings
20 to 35 years
Transportation and shop equipment
3 to 10 years
Computer hardware and software
3 to 5 years
Other
3 to 10 years
Property, plant and equipment, net, consisted of the following (in thousands):
 
December 31,
 
2018
 
2017
Compression equipment, facilities and other fleet assets
$
3,323,465

 
$
3,192,363

Land and buildings
47,067

 
45,754

Transportation and shop equipment
103,766

 
100,133

Computer hardware and software
92,174

 
90,296

Other
11,880

 
12,419

Property, plant and equipment
3,578,352

 
3,440,965

Accumulated depreciation
(1,407,314
)
 
(1,364,038
)
Property, plant and equipment, net
$
2,171,038

 
$
2,076,927