Balance Sheet Components

The following table presents the components of certain balance sheet asset amounts as of December 31 and March 31, 2017 (in thousands):



	December 31, 2017			March 31, 2017
Accounts receivable, net:
Accounts receivable	$	668,811		$	395,754
Allowance for doubtful accounts	(233		)	(607		)
Allowance for sales returns	(25,008		)	(18,800		)
Allowance for cooperative marketing arrangements *	(44,033		)	(28,022		)
Allowance for customer incentive programs *	(102,974		)	(60,857		)
Allowance for pricing programs *	(144,810		)	(102,289		)
	$	351,753		$	185,179
Inventories:
Raw materials	$	35,752		$	30,582
Finished goods	243,227			222,819
	$	278,979		$	253,401
Other current assets:
Value-added tax receivables	$	29,620		$	23,132
Prepaid expenses and other assets	27,910			18,600
	$	57,530		$	41,732
Property, plant and equipment, net:
Property, plant and equipment at cost	$	362,809		$	348,760
Less: accumulated depreciation and amortization	(275,908		)	(263,352		)
	$	86,901		$	85,408
Other assets:
Deferred tax assets **	$	86,518		$	57,303
Trading investments for deferred compensation plan	17,998			15,043
Investments in privately held companies	11,969			10,776
Other assets	6,354			4,997
	$	122,839		$	88,119

The following table presents the components of certain balance sheet liability amounts as of December 31 and March 31, 2017 (in thousands):



	December 31, 2017		March 31, 2017
Accrued and other current liabilities:
Accrued personnel expenses	$	73,124	$	88,346
Indirect customer incentive programs *	69,921		36,409
Warranty accrual	15,640		13,424
Employee benefit plan obligation	2,164		1,266
Income taxes payable	4,387		6,232
Contingent consideration for business acquisition - current portion	—		2,889
Other current liabilities	112,819		83,707
	$	278,055	$	232,273
Other non-current liabilities:
Warranty accrual	$	10,624	$	8,487
Obligation for deferred compensation plan	17,998		15,043
Employee benefit plan obligation	43,110		41,998
Deferred tax liability	1,789		1,789
Contingent consideration for business acquisition - non-current portion	—		7,019
Other non-current liabilities	8,483		9,355
	$	82,004	$	83,691

*The increases in the allowances for cooperative marketing arrangements, customer incentive programs, pricing programs and indirect customer incentive programs as of December 31, 2017 compared with March 31, 2017 were primarily the result of seasonality in the Company's business and increases in these marketing and promotional activities.

**The increase in deferred tax assets was primarily due to the adoption of ASU 2016-09 effective April 1, 2017, partially offset by the remeasurement of federal deferred tax assets as a result of the enactment of the Tax Act in the third quarter of fiscal year 2018. See "Note 5 - Income Taxes" for more information.