Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Income from continuing operations	$ 39,692	$ 3,377
Loss from discontinued operation	(286)	(68)
Net income	39,406	3,309
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	2,481	2,406
Bad debt expense (reduction)	510	(16)
Stock-based compensation expense	292	453
Reduction of previously estimated asset disposal loss	0	(86)
Loss on asset dispositions	9	14
Deferred income taxes, net of valuation allowance	(34,156)	333
Changes in operating assets and liabilities:
Trade receivables, net	4,048	12,024
Inventories	1,259	(5,278)
Prepaids and other current assets	998	(41)
Income taxes	(183)	(169)
Trade payables	(5,719)	(7,459)
Accrued liabilities, including warranty obligations	(1,999)	(1,223)
Net cash provided by operating activities	6,946	4,267
Cash flows from investing activities:
Proceeds from sale of assets of discontinued operation	113	310
Purchases of software and equipment	(2,847)	(1,742)
Net cash used in investing activities	(2,734)	(1,432)
Cash flows from financing activities:
Repayment of long-term borrowings	0	(5,000)
Proceeds from exercise of stock options	355	89
Net cash provided by (used in) financing activities	355	(4,911)
Effect of exchange rate changes on cash and cash equivalents	(80)	(142)
Increase (decrease) in cash and cash equivalents	4,487	(2,218)
Cash and cash equivalents:
Beginning of period	23,207	17,427
End of period	27,694	15,209
Supplemental disclosure of cash flow information:
Cash paid for interest	25	533
Cash paid (refunded) for income taxes, net	$ 246	$ (97)