Intangible Assets (Tables)

6 Months Ended

12 Months Ended

Sep. 30, 2014

Mar. 31, 2014

Intangible Assets

Schedule of intangible assets

		September 30, 2014				March 31, 2014
	Amortizable	Gross Carrying		Accumulated		Gross Carrying		Accumulated
	Lives	Amount		Amortization		Amount		Amortization
		(in thousands)
Amortizable —
Customer relationships (1)	3–20 years	$	761,992	$	119,439	$	697,405	$	83,261
Pipeline capacity rights	30 years	94,800		942		—		—
Water facility development agreement	5 years	14,000		3,500		14,000		2,100
Executory contracts and other agreements	5–10 years	23,920		16,367		23,920		13,190
Non-compete agreements	2–7 years	14,412		8,302		14,161		6,388
Trade names	2–10 years	14,539		5,197		15,489		3,081
Debt issuance costs	5–10 years	53,289		12,737		44,089		8,708
Total amortizable		976,952		166,484		809,064		116,728
Non-amortizable —
Trade names		27,620				22,620
Total		$	1,004,572	$	166,484	$	831,684	$	116,728

(1) The weighted-average remaining amortization period for customer relationship intangible assets is approximately 9 years.

		March 31, 2014				March 31, 2013
						Gross Carrying
	Amortizable	Gross Carrying		Accumulated		Amount		Accumulated
	Lives	Amount		Amortization		(Note 2)		Amortization
				(in thousands)
Amortizable -
Customer relationships (1)	3–20 years	$	697,405	$	83,261	$	405,160	$	30,959
Water facility development agreement	5 years	14,000		2,100		—		—
Lease and other agreements	5–8 years	23,920		13,190		15,210		7,018
Non-compete agreements	2–7 years	14,161		6,388		11,509		2,871
Trade names	1–10 years	15,489		3,081		2,784		326
Debt issuance costs	5–10 years	44,089		8,708		19,494		2,981
Total amortizable		809,064		116,728		454,157		44,155
Non-amortizable -
Trade names		22,620				31,430
Total		$	831,684	$	116,728	$	485,587	$	44,155

(1) The weighted-average remaining amortization period for customer relationship intangible assets is approximately nine years.

Schedule of amortization expense

	Three Months Ended				Six Months Ended
	September 30,				September 30,
Recorded In	2014		2013		2014		2013
	(in thousands)
Depreciation and amortization	$	21,711	$	11,324	$	42,604	$	20,600
Cost of sales	1,984		949		4,121		1,574
Interest expense	2,117		1,065		4,029		2,462
Total	$	25,812	$	13,338	$	50,754	$	24,636

	Year Ended March 31,
Recorded in	2014		2013		2012
	(in thousands)
Depreciation and amortization	$	60,855	$	29,657	$	4,538
Cost of sales	6,172		5,285		800
Interest expense	5,727		3,375		1,277
Loss on early extinguishment of debt	—		5,769		—
	$	72,754	$	44,086	$	6,615

Schedule of expected amortization of intangible assets

Expected amortization of our intangible assets is as follows (in thousands):

Year Ending March 31,
2015 (six months)	$	50,570
2016	97,432
2017	90,795
2018	86,818
2019	79,587
Thereafter	405,266
Total	$	810,468

Expected amortization of our intangible assets is as follows (in thousands):

Year Ending March 31,
2015	$	88,970
2016	83,449
2017	76,826
2018	72,857
2019	66,826
Thereafter	303,408
	$	692,336