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Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income from continuing operations	$ 2,412	$ 1,994
Adjustments to reconcile net income from continuing operations to net cash provided by continuing operations:
Depreciation and amortization	873	939
Deferred tax expense	687	758
Stock-based compensation	754	1,078
Changes in assets and liabilities:
Accounts receivable, net	712	9,323
Inventories	(3,013)	(3,534)
Foreign sales tax receivable	(430)	400
Other current assets	(374)	(1,146)
Accounts payable	(855)	576
Income taxes payable	(356)	(1,995)
Accrued expenses	1,134	510
Deferred compensation	(2,424)	(303)
Deferred revenue	1,300	(602)
Net cash provided by operating activities of continuing operations	420	7,998
Cash flows from investing activities of continuing operations:
Additions to property and equipment	(129)	(245)
Additions to intangible assets	(67)	(60)
Other assets	283	14
Net cash provided by (used in) investing activities of continuing operations	87	(291)
Cash flows from financing activities of continuing operations:
Proceeds from exercise of stock options	6	97
Tax payments for restricted stock issuances	(693)
Net cash provided by (used in) financing activities of continuing operations	(687)	97
Cash flows used in discontinued operations:
Net cash provided by (used in) operating activities of discontinued operations	(164)	(336)
Net cash provided by (used in) discontinued operations	(164)	(336)
Effect of exchange rate changes on cash	(1,481)	1,412
Net increase (decrease) in cash	(1,825)	8,880
Cash and equivalents, beginning of year	106,469	84,497
Cash and equivalents, end of period	$ 104,644	$ 93,377

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