SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

3 Months Ended

Mar. 31, 2014

Accounting Policies [Abstract]

Activity of Allowance for Doubtful Accounts

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

	March 31, 2014		December 31, 2013
	(in thousands)
Beginning balance	$	50	$	286
Charges to costs and expenses		47		24
Accounts charged off, less recoveries		—		(260	)
Ending balance	$	97	$	50

Inventories

Inventories are composed of the following:

	March 31, 2014		December 31, 2013
	(in thousands)
Raw materials	$	17,543	$	18,651
Work in progress		7,912		10,337
Finished goods		3,115		5,324
	$	28,570	$	34,312

Property and Equipment

Property and equipment consisted of the following:

	March 31, 2014			December 31, 2013
	(in thousands)
Land and land improvements	$	4,133		$	4,133
Buildings		32,323			32,269
Machinery, equipment and tooling		122,348			121,313
Leasehold improvements		7,696			7,696
Furniture and fixtures		949			949
Information systems		1,089			1,077
Construction in progress		5,993			5,221
Total cost		174,531			172,658
Accumulated depreciation and amortization		(60,894	)		(57,438	)
Property and equipment, net	$	113,637		$	115,220

Anti-Dilutive Securities Excluded from Calculation of Diluted Net Loss Per Share

At March 31, 2014 and 2013, the Company had the following anti-dilutive securities outstanding which were excluded from the calculation of diluted net loss per share:

	March 31, 2014		March 31, 2013
Warrants		175,832		114,093
Stock options		357,511		217,373
		533,343		331,466

Components of Comprehensive Income (Loss)

The following table summarizes the components of comprehensive loss:

	March 31, 2014			December 31, 2013
	(in thousands)
Unrealized loss on investments, net of taxes	$	(562	)	$	(406	)
Unrealized loss on currency translation		(11	)		(12	)
Ending Balance	$	(573	)	$	(418	)