Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Cash flows from operating activities:
Net income (loss)	$ 5,664		$ (6,826)		$ 50,780
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	2,016		2,635		8,659
Share-based compensation expense	1,191		2,469		2,899
Provision for doubtful accounts	116		296		(212)
Deferred income taxes	653		(1,130)		(2,947)
Amortization of premium on marketable securities	0		39		364
Gain on sale of deferred consideration litigation	(2,314)		0		(520)
Gain on disposition of property and equipment	28		46		81
Gain (loss) on sale of subsidiary	(23,272)		3,154		(37,528)
Impairment of goodwill and other intangibles	3,007		7,095		1,226
Changes in operating assets and liabilities:
Accounts receivable	11,439		(376)		(26,029)
Inventories	(689)		8,546		(20,263)
Other assets	(5,927)		6,064		(20,040)
Accounts payable	(5,104)		(43)		16,290
Accrued liabilities	(1,002)		(903)		(2,029)
Income tax payable	(2,168)		1,149		(1,373)
Deferred revenue	155		(3,483)		3,378
Other current liabilities	281		(2,376)		(271)
Net cash provided by (used in) operating activities	(15,926)		16,356		(27,535)
Cash flows from investing activities:
Purchases of property and equipment	(2,909)		(3,118)		(13,118)
Proceeds from sale of property and equipment	192		143		86
Purchases of intangibles	(400)		(474)		0
Proceeds from sale of investments in unconsolidated entities			0		3,708
Proceeds from sale of subsidiaries, net of cash acquired	38,233		1,155		130,562
Investment in restricted time deposits	1,371		152		(397)
Purchases of investments	0		0		(44,971)
Proceeds from sale or maturity of investments	0		13,474		49,057
Net cash provided by investing activities	36,487		11,332		124,927
Cash flows from financing activities:
Net proceeds from exercise of stock options	0		234		995
Purchase of treasury shares	(3,257)		(425)		(1,494)
Borrowings on short-term debt	24,004		43,153		156,266
Payments on short-term debt	(27,958)		(52,371)		(160,363)
Borrowing on long-term obligations	459		0		0
Purchase of noncontrolling interest	0		0		(5,779)
Cash restricted to collateralize short-term debt	0		0		12,261
Dividend payment	(57,957)		(75,000)
Payments on long-term obligations	(230)		0		(14)
Net cash used by financing activities	(64,939)		(84,409)		1,872
Effect of exchange rate changes on cash and cash equivalents	1,271		(564)		1,282
Net increase (decrease) in cash and cash equivalents	(43,107)		(57,285)		100,546
Cash and cash equivalents, beginning of year	83,716	[1]	141,001	[1]	40,455	[1]
Cash and cash equivalents, end of year	40,609		83,716	[1]	141,001	[1]
Supplemental disclosure of cash flow information:
Cash paid during year for interest — continuing operations	416		760		265
Cash paid during year for interest — discontinued operations	0		18		1,423
Cash paid during year for interest — Total	416		778		1,688
Cash paid during year for income taxes — continuing operations	1,540		3,147		2,569
Cash paid during year for income taxes — discontinued operations	295		2,016		3,542
Cash paid during year for income taxes — Total	$ 1,835		$ 5,163		$ 6,111

[1] The cash and cash equivalents at the beginning of the periods presented include $25,126, $15,403 and $19,389 from discontinued operations for December 31, 2012, 2011 and 2010, respectively.