Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Current assets:
Cash and cash equivalents	$ 249,348	$ 160,490
Accounts receivable, net of allowance for doubtful accounts (2013-$9,292; 2012-$10,022)	448,068	466,769
Inventories, net	353,941	361,774
Deferred taxes	37,786	30,247
Prepaid and other current assets	63,819	52,393
Total current assets	1,152,962	1,071,673
Property, plant, and equipment, net	350,126	353,215
Goodwill	345,499	352,737
Other intangible assets, net	103,701	107,082
Deferred taxes	14,168	15,999
Other assets	21,411	24,249
Total assets	1,987,867	1,924,955
Current liabilities:
Short-term debt	22,702	16,042
Current portion of long-term debt		2,540
Current portion of capital lease obligations	311	409
Accounts payable	249,359	249,996
Accrued expenses	191,664	188,403
Deferred taxes	3,523	2,911
Total current liabilities	467,559	460,301
Long-term debt	155,273	236,589
Capital lease obligations	203	521
Deferred taxes	88,036	84,479
Other liabilities	90,418	92,468
Total liabilities	801,489	874,358
Commitments and contingencies
Redeemable noncontrolling interests	11,095	9,782
Equity:
Series A Convertible Preferred Stock, $0.01 par value, 1,000,000 shares authorized, no shares issued or outstanding at March 31, 2013 and at March 31, 2012
Common Stock, $0.01 par value, 135,000,000 shares authorized, 52,970,281 shares issued and 47,840,204 shares outstanding at March 31, 2013; 52,247,014 shares issued and 47,800,129 shares outstanding at March 31, 2012	529	522
Additional paid-in capital	501,646	474,924
Treasury stock at cost, 5,130,077 shares held as of March 31, 2013 and 4,446,885 shares held as of March 31, 2012	(100,776)	(78,183)
Retained earnings	727,347	560,839
Accumulated other comprehensive income	40,655	74,093
Total EnerSys stockholders' equity	1,169,401	1,032,195
Nonredeemable noncontrolling interests	5,882	8,620
Total equity	1,175,283	1,040,815
Total liabilities and equity	$ 1,987,867	$ 1,924,955