Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Cash Flows From Operating Activities
Net loss	$ (12,240)	[1],[2],[3]	$ (11,608)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	4,152	[3]	5,353
Asset impairment charges	34	[3]	14
Stock-based compensation expense	1,202	[3]	1,144
Deferred taxes			387
Loss on disposal of property and equipment	111	[3]	18
Gain on sale of discontinued operations			(750)
Allowance for doubtful accounts	22	[3]	8
Write-down of inventories	30	[3]	721
Change in assets and liabilities, net of effects of acquisitions:
Accounts receivable	7,155	[3]	9,155
Inventories	(4,682)	[3]	(4,680)
Prepaid expenses and other assets	(977)	[3]	(1,800)
Accounts payable	2,126	[3]	584
Acquisition-related transaction costs	3,948	[3]
Accrued and other liabilities	280	[3]	(184)
Net cash provided by (used in) operating activities	1,161	[3]	(1,638)
Cash Flows From Investing Activities
Purchase of property, plant and equipment	(5,134)	[3]	(2,019)
Purchase of marketable securities	(29,030)	[3]	(12,964)
Proceeds from sale of marketable securities	23,747	[3]	5,139
Proceeds from maturity of securities	20,900	[3]	15,100
Decrease in restricted cash	524	[3]	68
Acquisition of OCU, net of notes payable	(14,087)	[3]
Proceeds received on sale of discontinued operations, net of tax			1,825
Net cash provided by (used in) investing activities	(3,080)	[3]	7,149
Cash flows from financing activities
Proceeds from exercise of stock options	79	[3]	64
Proceeds from bank loans	26,443	[3]
Repayment of bank loans	(8,610)	[3]	(1,250)
Proceeds from issuance of notes payable	4,881	[3]	7,738
Repayment of notes payable	(6,482)	[3]	(7,867)
Net cash provided by (used in) financing activities	16,311	[3]	(1,315)
Effect of exchange rates on cash and cash equivalents	72	[3]	209
Net increase in cash and cash equivalents	14,464	[3]	4,405
Cash and cash equivalents at the beginning of the period	36,940	[3]	32,485
Cash and cash equivalents at the end of the period	51,404	[3]	36,890
Notes Payable For OCU Acquisition
Supplemental disclosure of noncash investing and financing activities:
Issuance of notes to the seller of acquired business	$ 11,130	[3]

[1] Restated and Revised, see Note 2

[2] Restated and Revised, see Note 2

[3] Restated and Revised, see Note 2