Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flows from operating activities:
Net income (loss)	$ (6,826)	$ 50,780	$ 1,400
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	2,635	8,659	10,573
Share-based compensation expense	2,469	2,899	2,247
Provision for doubtful accounts	296	(212)	793
Deferred income taxes	(1,130)	(2,947)	334
Amortization of premium on marketable securities	(39)	(364)	(24)
Gain on disposition of property and equipment	46	81	(12)
Gain on sale of investments in unconsolidated entities	0		(3,488)
Loss (Gain) on sale of subsidiaries	3,154	(37,528)	0
Impairment of goodwill and other intangibles	7,095	1,226	0
Impairment of goodwill and long lived assets of discontinued operations	0	0	3,818
Gain on settlement of deferred consideration litigation	0	(520)	(20,524)
Changes in operating assets and liabilities:
Accounts receivable	(376)	(26,029)	(16,307)
Inventories	8,546	(20,263)	24,094
Other assets	6,064	(20,040)	1,834
Accounts payable	(43)	16,290	(18,272)
Accrued liabilities	(903)	(2,029)	(4,828)
Income tax payable	1,149	(1,373)	1,042
Deferred revenue	(3,483)	3,378	1,365
Other current liabilities	(2,376)	(270)	(662)
Net cash provided by (used in) operating activities	16,356	(27,534)	(16,569)
Cash flows from investing activities:
Purchases of property and equipment	(3,118)	(13,118)	(9,215)
Purchase of intangibles	(474)	0	0
Proceeds from sale of property and equipment	143	86	73
Proceeds from sale of investments in unconsolidated entities	0	3,708	0
Proceeds from divestiture of subsidiaries	886	121,777	0
Investment in restricted time deposits	(118)	(397)	(486)
Release of restricted time deposits	270	0	129
Purchases of investments	0	(44,971)	(18,922)
Proceeds from sale or maturity of investments	13,474	49,057	13,200
Net cash provided by (used in) investing activities	11,063	116,142	(15,221)
Cash flows from financing activities:
Net proceeds from exercise of stock options	234	995	47
Dividend paid to stockholders	(75,000)	0	0
Purchase of treasury shares	(425)	(1,494)	0
Cash restricted to collateralize short-term debt	0	0	(16,922)
Release of cash restricted to collateralize short-term debt	0	12,261	0
Purchase of noncontrolling interest	0	(5,779)	(1,525)
Borrowings on short-term debt	43,153	156,266	153,842
Payments on short-term debt	(52,371)	(160,363)	(111,544)
Payments on long-term obligations	0	(14)	(51)
Net cash used by (used in) financing activities	(84,409)	1,872	23,847
Effect of exchange rate changes on cash and cash equivalents	(564)	1,281	225
Net increase (decrease) in cash and cash equivalents	(57,554)	91,761	(7,718)
Less: Net increase (decrease) in cash and cash equivalents of discontinued operations	(269)	(8,785)	7,854
Net increase (decrease) in cash and cash equivalents of continuing operations	(57,285)	100,546	(15,572)
Cash and cash equivalents, beginning of year	141,001	40,455	56,027
Cash and cash equivalents, end of year	83,716	141,001	40,455
Supplemental disclosure of cash flow information:
Cash paid during year for interest — continuing operations	778	283	1,219
Cash paid during year for interest — discontinued operations	0	1,404	1,307
Cash paid during year for interest	778	1,687	2,526
Cash paid during year for income taxes — continuing operations	5,163	5,140	1,525
Cash paid during year for income taxes — discontinued operations	0	971	1,828
Cash paid during year for income taxes	$ 5,163	$ 6,111	$ 3,353