CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
OPERATING ACTIVITIES:
Cash used in operating activities - continuing operations	$ (35,598)	$ (42,233)
Cash used in operating activities - discontinued operations		(3,174)
Net cash used in operating activities	(35,598)	(45,407)
INVESTING ACTIVITIES:
Purchases of investments	(9,360)	(6,300)
Proceeds from sale of investments	13,894	8,561
Proceeds from maturity of investments		831
Purchases of property and equipment	(992)	(25,486)
Cash acquired in connection with purchase of Spigit, net of cash paid	174
Decrease (increase) in restricted deposits	1,495	(2,982)
Other investing activities, net	14	52
Cash provided by (used in) investing activities - continuing operations	5,225	(25,324)
Cash provided by investing activities - discontinued operations		1,925
Net cash provided by (used in) investing activities	5,225	(23,399)
FINANCING ACTIVITIES:
Repurchase of shares and payment of withholding taxes on RSU exercise		(1,019)
Repayment of debt	(31,292)	(2,789)
Proceeds from debt	28,525	32,000
Net cash provided by (used in) financing activities - continuing operations	(2,767)	28,192
Effect of exchange rate changes on cash	465	166
Decrease in cash and cash equivalents	(32,675)	(40,448)
Cash and cash equivalents beginning of the period	100,115	125,547
Cash and cash equivalents end of the period	67,440	85,099
Less cash and cash equivalents of discontinued operations at the end of the period		24,368
Cash and cash equivalents of continuing operations at the end of the period	67,440	60,731
SUPPLEMENTAL CASH FLOW INFORMATION:
Payment for federal, foreign, and state income taxes	109	2,984
Interest paid, net of amounts capitalized	5,407	2,072
Non-cash investing and financing activities:
Increase in assets from business combination	21,432
Increase in liabilities from business combination	20,377
Conversion of note receivable to common stock in Spigit	820
Accrued offering costs	1,678
Unpaid liability incurred for construction costs		3,718
Mortgage incurred to purchase real estate	$ 4,691	$ 360