Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating activities:
Net loss	$ (3,199)	$ (4,326)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	432	385
Amortization	681	818
Stock-based compensation	86	183
Goodwill impairment		3,175
Changes in operating assets and liabilities:
Accounts receivable, net	(538)	3,037
Inventories	(371)	591
Prepaid expenses and other receivables	(1,901)	(276)
Accounts payable	788	(369)
Accrued liabilities	1,183	(659)
Net cash provided by (used for) operating activities	(2,839)	2,559
Investing activities:
Purchases of marketable securities	(2,867)	(4,993)
Sales and maturities of marketable securities	3,289	3,882
Purchase of other investments	(300)
Capitalized software development costs	(459)
Purchases of property and equipment	(239)	(248)
Net cash used for investing activities	(576)	(1,359)
Financing activities:
Proceeds from exercise of stock options	9	87
Net cash provided by financing activities	9	87
Effect of exchange rate changes on cash	(185)	(49)
Increase (decrease) in cash and cash equivalents	(3,591)	1,238
Cash and cash equivalents at beginning of period	8,334	5,224
Cash and cash equivalents at end of period	$ 4,743	$ 6,462