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DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS
 12 Months Ended
Mar. 31, 2015
Balance Sheet Related Disclosures [Abstract]  
DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS
DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS

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:
 
 
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, 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



Depreciation and amortization expense for fiscal years 2015, 2014, and 2013 was $18.5 million, $15.5 million, and $15.8 million, respectively. Included in depreciation and amortization expense in fiscal years 2014 and 2013 is an immaterial amount of accelerated amortization in connection with restructuring activity announced in fiscal year 2013 related to leasehold improvement assets with no alternative future use.

Included in Software are unamortized capitalized software costs relating to both purchased and internally developed software of $19.2 million and $5.1 million at March 31, 2015 and 2014, respectively.  Amortization expense related to capitalized software costs in fiscal years 2015, 2014, and 2013 was $3.8 million, $2.3 million, and $2.9 million, respectively.
 
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, 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.