CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
OPERATING ACTIVITIES:
Cash used in operating activities - continuing operations	$ (46,865)	$ (19,736)
Cash provided by operating activities - discontinued operations		51
Net cash used in operating activities	(46,865)	(19,685)
INVESTING ACTIVITIES:
Purchases of investments	(5,526)	(4,650)
Proceeds from sale of investments	6,810	6,499
Proceeds from maturity of investments		831
Purchases of property and equipment	(432)	(14,371)
Cash acquired in connection with purchase of Spigit, net of cash paid	174
Decrease in restricted deposits	1,870
Other investing activities, net		10
Cash provided by (used in) investing activities - continuing operations	2,896	(11,681)
Cash provided by investing activities - discontinued operations		2,110
Net cash provided by (used in) investing activities	2,896	(9,571)
FINANCING ACTIVITIES:
Repurchase of shares and payment of withholding taxes on RSU exercise		(1,019)
Repayment of debt	(3,832)	(1,807)
Proceeds from debt	9,513	17,413
Net cash provided by financing activities - continuing operations	5,681	14,587
Effect of exchange rate changes on cash	541	(480)
Decrease in cash and cash equivalents	(37,747)	(15,149)
Cash and cash equivalents beginning of the period	100,115	125,547
Cash and cash equivalents end of the period	62,368	110,398
Less cash and cash equivalents of discontinued operations at the end of the period		28,378
Cash and cash equivalents of continuing operations at the end of the period	62,368	82,020
SUPPLEMENTAL CASH FLOW INFORMATION:
(Refund) payment for federal, foreign, and state income taxes	(33)	2,567
Interest paid, net of amounts capitalized	2,717	827
Non-cash investing and financing activities:
Increase in assets from business combination	21,533
Increase in liabilities from business combination	20,377
Conversion of note receivable to common stock in Spigit	820
Accrued offering costs	923
Unpaid liability incurred for construction costs		7,102
Mortgage incurred to purchase real estate	$ 4,691	$ 360