Consolidated Condensed Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
OPERATING ACTIVITIES
Net income	$ 1,713	$ 1,351
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,194	1,939
Provision for demonstration inventory		306
Inventory write down	3	96
Provision for doubtful accounts	930	1,104
Loss on disposal of property and equipment	77	36
Equity in income of unconsolidated affiliate	(582)
Deferred income taxes	(1,454)	382
Stock based compensation	1,668	1,518
Foreign exchange (gain) loss	(257)	2,013
Amortization of debt issuance costs	5	4
Amortization of debt discount	124	124
Non-cash charge for change in fair value of warrants		(224)
Changes in operating assets and liabilities:
Restricted cash	300	(198)
Accounts receivable	(2,101)	4,957
Receivable from affiliates	8,898
Inventories	(260)	(5,162)
Other current assets and other assets	724	(529)
Accounts payable, accrued expenses, other current liabilities and deferred revenue	339	(192)
Payable to affiliates	2,899
Income taxes payable	570	(1,642)
Net cash provided by operating activities	15,790	5,883
INVESTING ACTIVITIES
Purchases of short-term investments and CDs	(21,271)	(4,020)
Proceeds from redemption of CDs	22,837	21,802
Purchases of property and equipment	(11,157)	(5,733)
Net cash (used in) provided by investing activities	(9,591)	12,049
FINANCING ACTIVITIES
Proceeds from debt, vendor financing and convertible debentures		39
Repayment of debt, sinking fund deposits and vendor financing		(1,472)
Repurchase of restricted stock for income tax withholding		(4)
Proceeds from exercise of stock options and warrants	114	90
Net cash provided by (used in) financing activities	114	(1,347)
Effect of foreign exchange rate changes on cash and cash equivalents	263	1,761
Net increase in cash and cash equivalents	6,576	18,346
Cash and cash equivalents at beginning of period	32,007	23,760
Cash and cash equivalents at end of period	38,583	42,106
Supplemental disclosures of cash flow information:
Cash paid for interest		641
Cash paid for taxes	2,973	4,770
Non-cash investing and financing activities consist of the following:
Property and equipment additions included in accounts payable	100	808
Cashless exercise of warrants at fair value		800
Exercise of warrants at fair value		$ (201)