Note 3 - Balance Sheet Components

3 Months Ended

Mar. 31, 2014

Disclosure Text Block Supplement [Abstract]

Supplemental Balance Sheet Disclosures [Text Block]

3. BALANCE SHEET COMPONENTS

Accounts receivable include amounts that are unbilled at the end of the period. Unbilled accounts receivable are determined on an individual contract basis and were $10.0 million and $8.0 million as of March 31, 2014, and December 31, 2013, respectively.

Property and equipment consists of (in thousands): 

	March 31, 2014			December 31, 2013
Property and equipment, net:
Computer equipment	$	9,867		$	9,969
Software		3,439			3,441
Furniture, fixtures and equipment		737			734
Leasehold improvements		1,047			1,052
Test equipment		5,379			4,928
Construction-in-progress		1,622			1,421
		22,091			21,545
Less: accumulated depreciation		(14,509	)		(14,481	)
Total	$	7,582		$	7,064

Depreciation and amortization expense was $0.5 million and $0.3 million for the three months ended March 31, 2014 and 2013, respectively.

Intangible assets balance was $12,000 and $31,000 as of March 31, 2014, and December 31, 2013, respectively. The balance was included in other non-current assets in the accompanying condensed consolidated balance sheets. For both the three-month periods ended March 31, 2014 and 2013, intangible asset amortization expense was $18,000. The Company expects the remaining balance of its intangible assets to be fully amortized in the second quarter ending June 30, 2014.