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Accounts Receivable - Net (Details) (USD $) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Mar. 31, 2012
Accounts Receivable - Net [Abstract] |  |  |  |  |  |  |  |  |  |
Accounts receivable - trade | $ 74,003,000 |  |  |  | $ 74,003,000 |  |  |  | $ 83,937,000 | [1]
Allowance for bad debts | (1,350,000) |  |  |  | (1,350,000) |  |  |  | (968,000) |
Customer allowances earned | (21,723,000) |  |  |  | (21,723,000) |  |  |  | (25,322,000) | [1]
Customer payment discrepancies | (1,850,000) |  |  |  | (1,850,000) |  |  |  | (280,000) |
Customer fill rate penalties | (7,938,000) |  |  |  | (7,938,000) |  |  |  | (7,827,000) | [1]
Customer returns RGA issued | (9,507,000) |  |  |  | (9,507,000) |  |  |  | (5,875,000) |
Customer core returns accruals | (26,464,000) |  |  |  | (26,464,000) |  |  |  | (23,629,000) |
Less: total accounts receivable offset accounts | (68,832,000) |  |  |  | (68,832,000) |  |  |  | (63,901,000) |
Total accounts receivable - net | 5,171,000 |  |  |  | 5,171,000 |  |  |  | 20,036,000 |
Amount reclassified from from accounts receivable trade to customer allowances earned |  |  |  |  |  |  |  |  | 9,072,000 |
Warranty Returns [Abstract] |  |  |  |  |  |  |  |  |  |
Warranty accrual included in customer returns RGA issued | 4,795,000 |  |  |  | 4,795,000 |  |  |  |  |
Warranty accrual included in customer finished goods returns accrual | 7,969,000 |  |  |  | 7,969,000 |  |  |  |  |
Change in warranty return accrual [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance at beginning of period | 10,258,000 |  | 7,324,000 |  | 9,023,000 |  | 8,969,000 |  |  |
Charged to expense | 16,860,000 | [2] | 15,421,000 | [2] | 52,438,000 | [2] | 46,047,000 | [2] |  |
Amounts processed | (14,354,000) | [2] | (15,180,000) | [2] | (48,697,000) | [2] | (47,451,000) | [2] |  |
Balance at end of period | $ 12,764,000 |  | $ 7,565,000 |  | $ 12,764,000 |  | $ 7,565,000 |  |  |
[1] | Amounts shown above as customer allowances earned and customer fill rate penalties include $9,072,000 and $7,827,000, respectively, at March 31, 2012 which have been reclassified from accounts receivable – trade to conform to the fiscal 2013 presentation.
[2] | Amounts shown above as warranty claims processed and charged to expense for the three and nine months ended December 31, 2011 have been reclassified to conform to the current year presentation.

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- Definition Customer allowances earned include amounts at March 31, 2012 which have been reclassified from accounts receivable - trade to conform to the fiscal 2013 presentation. + References No definition available. + Details
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- Definition Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 3 -Subparagraph a, b -Article 5 + Details
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- Definition Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 14 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(1),(c)(5) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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