Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating activities:
Net loss	$ (4,326)	$ (598)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	385	252
Amortization	818	826
Goodwill impairment	3,175
Stock-based compensation	183	202
Deferred income taxes	(512)	(3)
Changes in operating assets and liabilities:
Accounts receivable, net	3,037	192
Inventories	591	(629)
Prepaid expenses and other receivables	(276)	(544)
Accounts payable	(369)	(877)
Accrued liabilities	(613)	(485)
Income taxes payable	466	55
Net cash provided by (used in) operating activities	2,559	(1,609)
Investing activities:
Payment of earn-outs		(2,361)
Purchases of marketable securities	(4,993)
Sales and maturities of marketable securities	3,882	774
Purchases of property and equipment	(248)	(441)
Net cash used in investing activities	(1,359)	(2,028)
Financing activities:
Proceeds from exercise of stock options	87	51
Net cash provided by financing activities	87	51
Effect of exchange rate changes on cash	(49)	599
Increase (decrease) in cash and cash equivalents	1,238	(2,987)
Cash and cash equivalents at beginning of period	5,224	8,021
Cash and cash equivalents at end of period	$ 6,462	$ 5,034