Income Taxes (Summary Of The Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current deferred tax assets (liabilities):
Accrued compensation and benefits	$ 42	$ 59
Prepaid expenses and other	(31)	(22)
Inventory reserves	21	169
Allowance for doubtful accounts	115	119
Warranty reserves	39	104
Total current deferred tax asset	186	429
Non-current deferred tax assets (liabilities):
Intangible and other assets	3,617	2,089
Foreign net operating loss carryforwards	280	991
Non-qualified stock option expense	63	192
Property, equipment and other	96	35
Non-current deferred tax asset (liability):	4,056	3,307
Less: valuation allowance	(280)	(176)
Non-current deferred tax asset (liability), net	3,776	3,131
Total net deferred tax asset (liability)	$ 3,962	$ 3,560