Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating activities:
Net loss	$ (1,453)	$ (668)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	211	142
Amortization	341	408
Stock-based compensation	55	97
Changes in operating assets and liabilities:
Accounts receivable, net	1,424	2,172
Inventories	393	625
Prepaid expenses and other receivables	(1,673)	22
Accounts payable	406	(1,252)
Accrued liabilities	57	(246)
Net cash provided by (used for) operating activities	(239)	1,300
Investing activities:
Purchases of marketable securities	(776)	(2,901)
Sales and maturities of marketable securities	1,092	2,183
Purchase of other investments	(300)
Capitalized software development costs	(157)
Purchases of property and equipment	(117)	(281)
Net cash used for investing activities	(258)	(999)
Financing activities:
Proceeds from exercise of stock options		3
Net cash provided by financing activities		3
Effect of exchange rate changes on cash	(301)	206
Increase (decrease) in cash and cash equivalents	(798)	510
Cash and cash equivalents at beginning of period	8,334	5,224
Cash and cash equivalents at end of period	$ 7,536	$ 5,734