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Segment Information (Tables)
 9 Months Ended
Sep. 30, 2012
Segment Information [Abstract]  
Amounts Related To Balance Sheets For Each Segment
Results for each segment are shown below:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2012
 
2011
 
2012
 
2011
External Revenues
 
 
 
 
 
 
 
Gathering and Processing
$
262,087

 
$
339,273

 
$
832,354

 
$
908,448

Joint Ventures (1)
—

 
—

 
—

 
—

Contract Compression
37,841

 
36,024

 
111,279

 
112,532

Contract Treating
8,707

 
10,573

 
25,230

 
29,848

Corporate and Others
5,247

 
4,397

 
14,894

 
13,189

Eliminations
—

 
—

 
—

 
—

Total
$
313,882

 
$
390,267

 
$
983,757

 
$
1,064,017

Intersegment Revenues
 
 
 
 
 
 
 
Gathering and Processing
$
—

 
$
—

 
$
—

 
$
—

Joint Ventures (1)
—

 
—

 
—

 
—

Contract Compression
4,407

 
3,339

 
12,968

 
12,809

Contract Treating
1,092

 
20

 
2,271

 
20

Corporate and Others
58

 
60

 
167

 
237

Eliminations
(5,557
)
 
(3,419
)
 
(15,406
)
 
(13,066
)
Total
$
—

 
$
—

 
$
—

 
$
—

Segment Margin
 
 
 
 
 
 
 
Gathering and Processing
$
59,392

 
$
64,716

 
$
210,143

 
$
169,011

Joint Ventures (1)
—

 
—

 
—

 
—

Contract Compression
39,380

 
37,957

 
116,381

 
116,370

Contract Treating
8,115

 
6,642

 
23,239

 
21,594

Corporate and Others
5,459

 
4,767

 
15,604

 
14,582

Eliminations
(5,345
)
 
(3,341
)
 
(14,959
)
 
(12,802
)
Total
$
107,001

 
$
110,741

 
$
350,408

 
$
308,755

Operation and Maintenance
 
 
 
 
 
 
 
Gathering and Processing
$
30,226

 
$
24,426

 
$
87,240

 
$
67,250

Joint Ventures (1)
—

 
—

 
—

 
—

Contract Compression
15,099

 
15,916

 
45,648

 
48,618

Contract Treating
1,180

 
902

 
2,846

 
2,311

Corporate and Others
115

 
41

 
473

 
129

Eliminations
(5,345
)
 
(3,335
)
 
(14,959
)
 
(12,802
)
Total
$
41,275

 
$
37,950

 
$
121,248

 
$
105,506
Reconciliation Of Total Segment Margin To Net Income (Loss) From Continuing Operations Before Income Taxes
The table below provides a reconciliation of total segment margin to income before income taxes:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2012

2011
 
2012
 
2011
Total segment margin
$
107,001

 
$
110,741

 
$
350,408

 
$
308,755

Operation and maintenance
(41,275
)
 
(37,950
)
 
(121,248
)
 
(105,506
)
General and administrative
(14,935
)
 
(17,350
)
 
(47,106
)
 
(54,010
)
Gain (loss) on asset sales, net
42

 
131

 
(1,542
)
 
(50
)
Depreciation and amortization
(45,881
)
 
(41,956
)
 
(142,519
)
 
(122,695
)
Income from unconsolidated affiliates
21,055

 
30,946

 
87,198

 
86,921

Interest expense, net
(28,567
)
 
(28,852
)
 
(86,058
)
 
(73,548
)
Loss on debt refinancing, net
—

 
—

 
(7,820
)
 
—

Other income and deductions, net
1,106

 
15,050

 
25,549

*
20,105

(Loss) income before income taxes
$
(1,454
)
 
$
30,760

 
$
56,862


$
59,972


__________________
*
Other income and deductions, net for the nine months ended September 30, 2012, included a one-time producer payment of $15.6 million related to an assignment of certain contracts.
Schedule Of Assets Related To Balance Sheet
The table below provides a listing of total assets reflected in the consolidated balance sheet for each segment:
 
September 30,
2012
 
December 31,
2011
Gathering and Processing
$
2,127,565

 
$
1,959,697

Joint Ventures
2,123,802

 
1,924,705

Contract Compression
1,421,377

 
1,405,600

Contract Treating
228,940

 
215,172

Corporate and Others
66,452

 
62,682

Total
$
5,968,136

 
$
5,567,856