Supplementary Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2013

Components of Accounts Receivable, Net of Allowance

	December 31,
ACCOUNTS RECEIVABLE (in thousands):	2013		2012
Components of accounts receivable, net of allowances, are as follows:
Trade	$	10,960	$	11,456
Royalties		82		45
Other		85		179
Total receivables, net	$	11,127	$	11,680

Components of Inventory

	December 31,
INVENTORY, NET (in thousands):	2013		2012
Components of inventory, net of allowances, are as follows:
Raw materials	$	3,094	$	4,017
Work-in-process		1,727		1,949
Finished goods		6,557		5,176
Inventory, net	$	11,378	$	11,142

Components of Property, Plant and Equipment

	December 31,
PROPERTY, PLANT, AND EQUIPMENT, NET (in thousands):	2013			2012
Components of property, plant, and equipment, net of depreciation, are as follows:
Building	$	256		$	246
Leasehold improvements		1,207			1,193
Equipment and computers		6,078			5,219
Furniture and fixtures		1,049			1,046
Construction in progress		8			132
		8,598			7,836
Accumulated depreciation and amortization		(6,971	)		(6,518	)
		1,627			1,318
Land		199			191
Property, plant, and equipment, net	$	1,826		$	1,509

Components of Accrued Liabilities

	December 31,
ACCRUED LIABILITIES (in thousands):	2013		2012
Components of accrued liabilities are as follows:
Payroll and benefits	$	1,898	$	2,326
Warranty accrual, current portion		1,096		1,699
Sales and excise tax		322		763
Accrued professional services		912		502
Accrued insurance premium		428		751
Other		341		226
Accrued liabilities	$	4,997	$	6,267

Components of Deferred Revenue

	December 31,
DEFERRED REVENUE (in thousands):	2013			2012
Components of deferred revenue are as follows:
Undelivered elements (training, installation, product and support services)	$	1,823		$	1,723
Extended warranty contracts		1,642			1,506
Total Deferred Revenue		3,465			3,229
Less Long-Term amounts:
Extended warranty contracts		(1	)		(3	)
Total Deferred Revenue — Long Term		(1	)		(3	)
Total Deferred Revenue — Current	$	3,464		$	3,226