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DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS (Tables)
 9 Months Ended
Dec. 31, 2012
Balance Sheet Related Disclosures [Abstract]  
Accounts receivable, net [Table Text Block]
Accounts receivable, net:
 
 
December 31,
 
March 31,
(in thousands)
 
2012
 
2012
Accounts receivable
 
$
135,654

 
$
133,233

Provisions for returns
 
(8,438
)
 
(7,613
)
Provisions for promotions, rebates and other
 
(14,053
)
 
(12,756
)
Provisions for doubtful accounts and sales allowances
 
(486
)
 
(1,093
)
Accounts receivable, net
 
$
112,677

 
$
111,771
Inventory, net [Table Text Block]
Inventory, net:
 
 
December 31,
 
March 31,
(in thousands)
 
2012
 
2012
Raw materials
 
$
34,600

 
$
21,246

Work in process
 
276

 
367

Finished goods
 
32,029

 
32,100

Inventory, net
 
$
66,905

 
$
53,713
Property, Plant and Equipment [Table Text Block]
Property, plant and equipment, net:
 
 
December 31,
 
March 31,
(in thousands)
 
2012
 
2012
Land
 
$
13,961

 
$
6,531

Buildings and improvements (useful life: 7-30 years)
 
74,796

 
67,417

Machinery and equipment (useful life: 2-10 years)
 
87,102

 
90,643

Software (useful life: 5-6 years)
 
30,000

 
28,951

Construction in progress
 
6,273

 
2,323

 
 
212,132

 
195,865

Accumulated depreciation and amortization
 
(118,580
)
 
(119,706
)
   Property, plant and equipment, net
 
$
93,552

 
$
76,159
Accrued Liabilities [Table Text Block]
Accrued Liabilities:
 
 
December 31,
 
March 31,
(in thousands)
 
2012
 
2012
Employee compensation and benefits
 
$
26,842

 
$
24,458

Warranty obligation
 
13,055

 
13,346

Accrued advertising and sales and marketing
 
1,902

 
1,152

Restructuring and other related charges (1)
 
1,868

 
—

Accrued other
 
14,603

 
13,111

Accrued liabilities
 
$
58,270

 
$
52,067
Changes in the warranty obligation [Table Text Block]
Changes in the warranty obligation during the nine months ended December 31, 2012 were as follows:

 
 
Nine Months Ended
(in thousands)
 
December 31, 2012
Warranty obligation at March 31, 2012
 
$
13,346

Warranty provision relating to products shipped
 
11,856

Deductions for warranty claims processed
 
(12,147
)
Warranty obligation at December 31, 2012
 
$
13,055