Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (1,677)	$ 532
Adjustments to reconcile income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	316	201
Equipment transferred to cost of goods sold	4	22
Share-based compensation	131	87
Net change in:
Trade accounts receivable	2,486	(407)
Inventories	(510)	56
Other current assets	178	140
Accounts payable and accrued liabilities	(376)	(573)
Deferred revenue	(293)	(69)
Other long-term liabilities		125
Deposits and other long-term assets		58
Net cash provided by operating activities	259	172
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property, plant and equipment	(153)	(152)
Cash provided by (used in) investing activities	(153)	(152)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock	13	11
Repurchase of common stock	(6,026)
Payment of capital lease obligation		(35)
Cash provided by (used in) financing activities	(6,013)	(24)
Increase (decrease) in cash and cash equivalents	(5,907)	(4)
Effects of exchange rate changes on cash	71	86
Cash and cash equivalents at beginning of period	18,120	18,942
Cash and cash equivalents at end of period	$ 12,284	$ 19,024