SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2014

Accounting Policies [Abstract]

Activity of Allowance for Doubtful Accounts

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

	June 30, 2014		December 31, 2013
	(in thousands)
Beginning balance	$	50	$	286
Charges to costs and expenses		53		24
Accounts charged off, less recoveries		—		(260	)
Ending balance	$	103	$	50

Inventories

Inventories are composed of the following:

	June 30, 2014		December 31, 2013
	(in thousands)
Raw materials	$	16,185	$	18,651
Work in progress		5,155		10,337
Finished goods		2,024		5,324
	$	23,364	$	34,312

Property and Equipment

Property and equipment consisted of the following:

	June 30, 2014			December 31, 2013
	(in thousands)
Land and land improvements	$	4,133		$	4,133
Buildings		32,461			32,269
Machinery, equipment and tooling		123,994			121,313
Leasehold improvements		7,640			7,696
Furniture and fixtures		948			949
Information systems		1,089			1,077
Construction in progress		5,944			5,221
Total cost		176,209			172,658
Accumulated depreciation and amortization		(63,349	)		(57,438	)
Property and equipment, net	$	112,860		$	115,220

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

At June 30, 2014 and 2013, the Company had the following anti-dilutive securities outstanding which were excluded from the calculation of diluted net loss per share:

	June 30, 2014		June 30, 2013
Warrants		170,323		133,718
Stock options		354,793		254,350
Total		525,116		388,068

Components of Comprehensive Loss

The following table summarizes the components of comprehensive loss:

	June 30, 2014			December 31, 2013
	(in thousands)
Unrealized loss on investments	$	(469	)	$	(406	)
Unrealized loss on currency translation		(11	)		(12	)
Ending Balance	$	(480	)	$	(418	)