Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2012

Summary of Significant Accounting Policies [Abstract]

Activity of allowance for doubtful accounts

The following table shows the activity of the allowance for doubtful accounts:

	September 30, 2012			December 31, 2011
	(in thousands)
Beginning balance	$	378		$	194
Charges to costs and expenses		14			1,873
Accounts charged off, less recoveries		(4	)		(1,689	)
Ending balance	$	388		$	378

Inventories

Inventories are composed of the following:

	September 30, 2012		December 31, 2011
	(in thousands)
Raw materials	$	20,584	$	7,835
Work in progress		19,862		9,776
Finished goods		5,365		5,212
	$	45,811	$	22,823

Property and equipment

Property and equipment consisted of the following:

	September 30, 2012			December 31, 2011
	(in thousands)
Land and land improvements	$	4,133		$	2,540
Buildings		30,208			26,915
Machinery, equipment and tooling		103,412			98,276
Leasehold improvements		7,696			7,712
Furniture and fixtures		941			834
Information systems		1,070			954
Construction in progress		16,670			17,530
Total cost		164,130			154,761
Accumulated depreciation and amortization		(42,772	)		(33,830	)
Property and equipment, net	$	121,358		$	120,931

Anti-dilutive securities outstanding excluded from calculation of diluted net loss per share

At September 30, 2012, the Company had the following anti-dilutive securities outstanding which were excluded from the calculation of diluted net loss per share for the nine months ended September 30, 2012:

	September 30, 2012
Warrants		169,042
Stock options		356,965
		526,007

Activity of accumulated comprehensive income (loss)

The following table shows the activity of accumulated comprehensive income (loss):

	September 30, 2012			December 31, 2011
	(in thousands)
Beginning Balance	$	(50	)	$	(10	)
Unrealized gain (loss) on investments, net of taxes		681			(42	)
Unrealized gain (loss) on currency translation		(5	)		2
Ending Balance	$	626		$	(50	)