Statements of Operations (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012	Jun. 30, 2011
Revenue:
Product revenue	$ 41,240		$ 44,907		$ 77,166	$ 86,204
Service revenue	13,780		14,325		26,225	26,199
Total revenue	55,020		59,232		103,391	112,403
Cost of sales	36,066		35,552		67,278	69,043
Gross profit	18,954		23,680		36,113	43,360
Operating expenses:
Product development and engineering	3,429		3,604		7,174	7,441
Selling, general and administrative	18,879		18,325		35,918	34,428
Total operating expenses	22,308		21,929		43,092	41,869
Operating income (loss)	(3,354)		1,751		(6,979)	1,491
Interest expense	(213)		(190)		458	437
Gain from settlement of deferred consideration obligation	2,314		0		2,314	0
Other income (loss), net	(316)		(49)		(33)	(212)
Income (loss) from continuing operations before income taxes	(1,569)		1,512		(5,156)	842
Provision for income taxes	545		1,281		1,321	2,511
Income (loss) from continuing operations	(2,114)		231		(6,477)	(1,669)
Income (loss) from discontinued operations, net of income taxes of $0 in 2012 and $889 in 2011	0		(2,097)		7,975	(741)
Net income (loss)	$ (2,114)		$ (1,866)		$ 1,498	$ (2,410)
Net income per share — basic (1):
From continuing operations (dollars per share)	$ (0.01)	[1]	$ 0.00	[1]	$ (0.04)	$ (0.01)
From discontinued operations (dollars per share)	$ 0.00	[1]	$ (0.01)	[1]	$ 0.05	$ 0.00
Net income per share — basic (in dollars per share)	$ (0.01)	[1]	$ (0.01)	[1]	$ 0.01	$ (0.01)
Net loss per share — diluted (1):
From continuing operations (dollars per share)	$ (0.01)	[1]	$ 0.00	[1]	$ (0.04)	$ (0.01)
From discontinued operations (dollars per share)	$ 0.00	[1]	$ (0.01)	[1]	$ 0.05	$ 0.00
Net loss per share — diluted (in dollars per share)	$ (0.01)	[1]	$ (0.01)	[1]	$ 0.01	$ (0.01)
Weighted average number of shares:
Basic (shares)	157,738		157,449		157,744	157,510
Diluted (shares)	157,738		157,449		157,972	157,510

[1] Amounts may not add due to rounding.