CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating activities
Net income (loss)	$ (5,834)	$ 7,019
Adjustments to reconcile net income (loss) to net cash from operating activities:
Depreciation and amortization	4,221	3,716
Non-cash in-process research and development charge	1,060
Stock-based compensation expense, net	1,948	1,802
Gain on divestiture		(11,424)
Non-cash restructuring charge, net	2,263	634
Foreign currency exchange losses	(360)	518
Changes in operating assets and liabilities:
Accounts receivable	1,263	2,565
Inventories	(1,089)	(1,472)
Prepaid expenses and other current assets	(1,048)	(836)
Accounts payable and other accrued liabilities	1,355	960
Accrued compensation	(2,096)	(3,342)
Deferred revenue and customer deposits	(604)	(166)
Other noncurrent liabilities	(359)	(660)
Payments of accrued restructuring obligations, net	(1,509)	(901)
Net cash from operating activities	(789)	(1,587)
Investing activities
Purchases of marketable securities	(7,217)	(8,488)
Proceeds from sales of marketable securities	2,800
Proceeds from maturities of marketable securities	5,700	2,350
Other assets	124
Purchases of property and equipment	(1,060)	(946)
Proceeds from divestiture		16,500
Net cash from investing activities	347	9,416
Financing activities
Borrowings under credit facility		12,900
Payments of credit facility and other obligations		(27,800)
Payments of capital leases and other obligations	(272)
Proceeds from issuance of common stock	1,540	484
Net cash from financing activities	1,268	(14,416)
Effect of exchange rates on changes in cash and cash equivalents	(66)	43
Net increase (decrease) in cash and cash equivalents	760	(6,544)
Cash and cash equivalents at beginning of period	24,614	34,522
Cash and cash equivalents at end of period	$ 25,374	$ 27,978