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Intangible Assets (Tables)
9 Months Ended
Dec. 31, 2017
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Schedule of finite-lived intangible assets
Our intangible assets consist of the following at the dates indicated:
 
 
 
 
December 31, 2017
 
March 31, 2017
Description
 
Amortizable Lives
 
Gross Carrying
Amount
 
Accumulated
Amortization
 
Net
 
Gross Carrying
Amount
 
Accumulated
Amortization
 
Net
 
 
 
 
(in thousands)
Amortizable:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Customer relationships
 
3–20 years
 
$
882,256

 
$
(352,364
)
 
$
529,892

 
$
906,782

 
$
(316,242
)
 
$
590,540

Customer commitments
 
10 years
 
310,000

 
(36,167
)
 
273,833

 
310,000

 
(12,917
)
 
297,083

Pipeline capacity rights
 
30 years
 
161,785

 
(15,697
)
 
146,088

 
161,785

 
(11,652
)
 
150,133

Rights-of-way and easements
 
1–40 years
 
63,485

 
(2,670
)
 
60,815

 
63,402

 
(2,154
)
 
61,248

Executory contracts and other agreements
 
3–30 years
 
23,097

 
(16,626
)
 
6,471

 
29,036

 
(20,457
)
 
8,579

Non-compete agreements
 
2–32 years
 
17,988

 
(6,767
)
 
11,221

 
32,984

 
(17,762
)
 
15,222

Trade names
 
1–10 years
 
4,076

 
(1,822
)
 
2,254

 
15,439

 
(13,396
)
 
2,043

Debt issuance costs (1)
 
5 years
 
40,790

 
(23,419
)
 
17,371

 
38,983

 
(20,025
)
 
18,958

Total amortizable
 
 
 
1,503,477

 
(455,532
)
 
1,047,945

 
1,558,411

 
(414,605
)
 
1,143,806

Non-amortizable:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Trade names
 
 
 
17,010

 

 
17,010

 
20,150

 

 
20,150

Total non-amortizable
 
 
 
17,010

 

 
17,010

 
20,150

 

 
20,150

Total
 
 
 
$
1,520,487

 
$
(455,532
)
 
$
1,064,955

 
$
1,578,561

 
$
(414,605
)
 
$
1,163,956

 
(1)
Includes debt issuance costs related to the Revolving Credit Facility (as defined herein). Debt issuance costs related to fixed-rate notes are reported as a reduction of the carrying amount of long-term debt.
Schedule of indefinite-lived intangible assets
Our intangible assets consist of the following at the dates indicated:
 
 
 
 
December 31, 2017
 
March 31, 2017
Description
 
Amortizable Lives
 
Gross Carrying
Amount
 
Accumulated
Amortization
 
Net
 
Gross Carrying
Amount
 
Accumulated
Amortization
 
Net
 
 
 
 
(in thousands)
Amortizable:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Customer relationships
 
3–20 years
 
$
882,256

 
$
(352,364
)
 
$
529,892

 
$
906,782

 
$
(316,242
)
 
$
590,540

Customer commitments
 
10 years
 
310,000

 
(36,167
)
 
273,833

 
310,000

 
(12,917
)
 
297,083

Pipeline capacity rights
 
30 years
 
161,785

 
(15,697
)
 
146,088

 
161,785

 
(11,652
)
 
150,133

Rights-of-way and easements
 
1–40 years
 
63,485

 
(2,670
)
 
60,815

 
63,402

 
(2,154
)
 
61,248

Executory contracts and other agreements
 
3–30 years
 
23,097

 
(16,626
)
 
6,471

 
29,036

 
(20,457
)
 
8,579

Non-compete agreements
 
2–32 years
 
17,988

 
(6,767
)
 
11,221

 
32,984

 
(17,762
)
 
15,222

Trade names
 
1–10 years
 
4,076

 
(1,822
)
 
2,254

 
15,439

 
(13,396
)
 
2,043

Debt issuance costs (1)
 
5 years
 
40,790

 
(23,419
)
 
17,371

 
38,983

 
(20,025
)
 
18,958

Total amortizable
 
 
 
1,503,477

 
(455,532
)
 
1,047,945

 
1,558,411

 
(414,605
)
 
1,143,806

Non-amortizable:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Trade names
 
 
 
17,010

 

 
17,010

 
20,150

 

 
20,150

Total non-amortizable
 
 
 
17,010

 

 
17,010

 
20,150

 

 
20,150

Total
 
 
 
$
1,520,487

 
$
(455,532
)
 
$
1,064,955

 
$
1,578,561

 
$
(414,605
)
 
$
1,163,956

 
(1)
Includes debt issuance costs related to the Revolving Credit Facility (as defined herein). Debt issuance costs related to fixed-rate notes are reported as a reduction of the carrying amount of long-term debt.
Schedule of amortization expense
Amortization expense is as follows for the periods indicated:
 
 
Three Months Ended December 31,
 
Nine Months Ended December 31,
Recorded In
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Depreciation and amortization
 
$
30,711

 
$
28,728

 
$
93,666

 
$
71,880

Cost of sales
 
1,505

 
1,753

 
4,596

 
5,098

Interest expense
 
1,154

 
1,721

 
3,394

 
5,177

Total
 
$
33,370

 
$
32,202

 
$
101,656

 
$
82,155


Schedule of expected amortization of intangible assets
Expected amortization of our intangible assets is as follows (in thousands):
Fiscal Year Ending March 31,
 
2018 (three months)
$
32,936

2019
128,009

2020
124,632

2021
111,519

2022
96,432

Thereafter
554,417

Total
$
1,047,945