Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income (loss)	$ (1,769)	$ 1,483
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	1,085	621
Deferred income tax benefit	(202)	(175)
Loss on disposal of property and equipment	23	1
Stock-based compensation	622	469
Excess tax benefits from stock-based compensation		(11)
Changes in operating assets and liabilities:
Receivables	3,713	679
Inventories	(938)	(1,639)
Prepaid income taxes / income taxes payable	(1,260)	(446)
Prepaid expenses and other current assets	(282)	(62)
Trade accounts payable	(407)	659
Accrued compensation	(1,335)	(1,031)
Other accrued expenses and other current liabilities	47	(59)
Deferred income and customer deposits	(514)	2,627
Other long-term liabilities	551
Net cash provided by (used in) operating activities	(666)	3,116
Cash flows from investing activities:
Purchase of cost method investment		(2,000)
Purchases of property and equipment	(1,030)	(485)
Proceeds from sale of property and equipment	2
Net cash used in investing activities	(1,028)	(2,485)
Cash flows from financing activities:
Payment of dividends	(1,738)
Principal payments on capital lease obligations	(4)	(5)
Excess tax benefits from stock-based compensation		11
Proceeds from employee stock plans		158
Net cash provided by (used in) financing activities	(1,742)	164
Effect of exchange rate changes on cash	61	156
Net increase (decrease) in cash and cash equivalents	(3,375)	951
Cash and cash equivalents, beginning of period	70,161	107,982
Cash and cash equivalents, end of period	66,786	108,933
Supplemental disclosures of net cash paid during the period for:
Income taxes	$ 180	$ 1,528