Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 11,561	$ 7,832
Accounts receivable, net of allowance for doubtful accounts of $1,760 and $818, respectively	562,889	84,004
Accounts receivable - affiliates	22,883	2,282
Inventories	126,895	94,504
Prepaid expenses and other current assets	37,891	10,002
Total current assets	762,119	198,624
PROPERTY, PLANT AND EQUIPMENT, net of accumulated depreciation of $50,127 and $12,843, respectively	516,937	231,394
GOODWILL	563,146	167,245
INTANGIBLE ASSETS, net of accumulated amortization of $44,155 and $8,174, respectively	442,603	149,490
OTHER NONCURRENT ASSETS	6,542	2,766
Total assets	2,291,347	749,519
CURRENT LIABILITIES:
Trade accounts payable	535,687	81,369
Accrued expenses and other payables	85,703	14,143
Advance payments received from customers	22,372	20,293
Accounts payable - affiliates	6,900	9,462
Current maturities of long-term debt	8,626	19,534
Total current liabilities	659,288	144,801
LONG-TERM DEBT, net of current maturities	740,436	199,177
OTHER NONCURRENT LIABILITIES	2,205	212
COMMITMENTS AND CONTINGENCIES
PARTNERS' EQUITY, per accompanying statement:
General partner, representing a 0.1% interest, 53,676 and 29,245 notional units at March 31, 2013 and 2012, respectively	(50,497)	442
Accumulated other comprehensive income -
Foreign currency translation	24	31
Noncontrolling interest	5,740	428
Total partners' equity	889,418	405,329
Total liabilities and partners' equity	2,291,347	749,519
Common units
Limited partners, representing a 99.9% interest -
Limited partners, representing a 99.9% interest -	920,998	384,604
Subordinated units
Limited partners, representing a 99.9% interest -
Limited partners, representing a 99.9% interest -	$ 13,153	$ 19,824