Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (45,604)	$ (104,707)
Adjustments to reconcile net loss to net cash used in operating activities:
Asset impairment	17,391	7,521
Depreciation and amortization expense	13,899	29,825
Bad debt expense	9,138	12,409
Compensation expense related to share-based awards	1,470	2,361
Loss on sale of businesses, net	917	311
Loss on disposition of property and equipment	3	32
Changes in operating assets and liabilities	(23,809)	(29,037)
Net cash used in operating activities	(26,595)	(81,285)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of available-for-sale investments	(33,707)	(121,590)
Sales of available-for-sale investments	36,051	28,726
Purchases of property and equipment	(4,994)	(7,031)
Payments of cash upon sale of businesses	(2,018)	(250)
Other		(11)
Net cash used in investing activities	(4,668)	(100,156)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of common stock	939	392
Payment on borrowings	(10,000)
Change in restricted cash	9,500	636
Net cash provided by financing activities	439	1,028
EFFECT OF FOREIGN CURRENCY EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS:	258	78
NET DECREASE IN CASH AND CASH EQUIVALENTS	(30,566)	(180,335)
DISCONTINUED OPERATIONS CASH ACTIVITY INCLUDED ABOVE:
Add: Cash balance of discontinued operations, beginning of the period		475
CASH AND CASH EQUIVALENTS, beginning of the period	93,832	318,468
CASH AND CASH EQUIVALENTS, end of the period	$ 63,266	$ 138,608