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DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS (Tables)
 12 Months Ended
Mar. 31, 2015
Balance Sheet Related Disclosures [Abstract]  
Accounts receivable, net
Accounts receivable, net:
 
 
March 31,
(in thousands)
 
2015
 
2014
Accounts receivable
 
$
159,397

 
$
159,592

Provisions for returns
 
(6,194
)
 
(6,201
)
Provisions for promotions and rebates
 
(15,401
)
 
(14,803
)
Provisions for doubtful accounts and sales allowances
 
(1,221
)
 
(287
)
Accounts receivable, net
 
$
136,581

 
$
138,301
Inventory, net
Inventory, net:
 
 
March 31,
(in thousands)
 
2015
 
2014
Raw materials
 
$
24,263

 
$
28,071

Work in process
 
1,653

 
985

Finished goods
 
30,760

 
28,076

Inventory, net
 
$
56,676

 
$
57,132
Property, Plant and Equipment
Property, plant, and equipment, net:
 
 
March 31,
(in thousands)
 
2015
 
2014
Land
 
$
16,666

 
$
14,170

Buildings and improvements (useful life: 7-30 years)
 
99,914

 
94,299

Machinery and equipment (useful life: 2-10 years)
 
103,344

 
97,520

Software (useful life: 5-10 years)
 
43,387

 
30,368

Construction in progress
 
8,679

 
24,927

 
 
271,990

 
261,284

Accumulated depreciation and amortization
 
(132,577
)
 
(126,882
)
Property, plant, and equipment, net
 
$
139,413

 
$
134,402
Accrued Liabilities
Accrued liabilities:
 
 
March 31,
(in thousands)
 
2015
 
2014
Employee compensation and benefits
 
$
31,888

 
$
32,280

Warranty obligation
 
7,717

 
7,965

VAT/Sales Tax Payable
 
4,749

 
3,802

Income taxes payable
 
—

 
3,092

Accrued other
 
17,687

 
19,712

Accrued liabilities
 
$
62,041

 
$
66,851
Changes in the warranty obligation accrual
Changes in the warranty obligation, which are included as a component of accrued liabilities in the consolidated balance sheets, are as follows:
 
 
Year ended March 31,
 
(in thousands)
 
2015
 
2014
 
Warranty obligation at beginning of year
 
$
7,965

 
$
13,410

 
Warranty provision related to products shipped
 
9,955

 
9,861

 
Deductions for warranty claims processed
 
(8,856
)
 
(9,715
)
 
Adjustments related to preexisting warranties
 
(1,347
)
 
(5,591
)
(1) 
Warranty obligation at end of year
 
$
7,717


$
7,965

 
(1) During the third quarter of fiscal year 2014, the Company identified immaterial out of period errors related to its estimated warranty obligation and return material authorization ("RMA") reserves, the correction of which decreased its cost of revenues by approximately $2.4 million and increased net income by approximately $2.1 million. The Company recorded these corrections in the quarter ended December 31, 2013 because the errors were not material, either individually or in the aggregate, to any of the prior reporting periods. In addition, these adjustments are not material for the fiscal year ending March 31, 2014, either individually or in the aggregate.