Balance Sheet Details

3 Months Ended

Sep. 30, 2017

3. Balance Sheet Details

The following tables provide details of selected balance sheet accounts (in thousands):

	June 30,			September 30,
	2017			2017
Accounts receivable	$	216,089		$	213,164
Less allowance for doubtful accounts	(9,563		)	(10,096		)

Total	$	206,526		$	203,068

	June 30,		September 30,
	2017		2017
Raw materials	$	129,645	$	134,391
Work-in-process	65,454		67,412
Finished goods	53,411		69,506

Total	$	248,510	$	271,309

	Estimated
	Useful	June 30,			September 30,
	Lives	2017			2017
Land	N/A	$	14,212		$	17,129
Buildings, civil works and improvements	5 - 40 years	157,123			174,090
Leasehold improvements	1 - 12 years	9,025			9,412
Equipment and tooling	3 - 10 years	166,991			169,129
Furniture and fixtures	3 - 13 years	3,371			3,411
Computer equipment	3 - 5 years	17,991			18,741
Computer software	3 - 10 years	17,303			17,368
Computer software implementation in process	N/A	2,590			3,090
Construction in process	N/A	1,049			2,534

Total		389,655			414,904
Less accumulated depreciation and amortization		(248,116		)	(263,734		)

Property and equipment, net		$	141,539		$	151,170

In September 2017, we purchased the AS&E facility in Billerica, MA for a purchase price of $19.8 million. Of this amount, $16.9 million was included in Buildings, civil works and improvements and $2.9 million was included in Land above. Depreciation expense was $13.3 million and $16.2 million for the three months ended September 30, 2016 and 2017, respectively.