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Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2015 | Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net loss | $ (90,839) | $ (152,675)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Asset impairment | 50,837 | 22,006
Depreciation and amortization expense | 19,861 | 42,966
Bad debt expense | 15,526 | 19,107
Compensation expense related to share-based awards | 2,453 | 3,311
Loss on sale of businesses, net | 1,632 | 311
(Gain) loss on disposition of property and equipment | (10) | 32
Changes in operating assets and liabilities | (20,463) | (36,203)
Net cash used in operating activities | (21,003) | (101,145)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchases of available-for-sale investments | (64,056) | (131,487)
Sales of available-for-sale investments | 69,436 | 51,540
Purchases of property and equipment | (7,926) | (10,558)
Proceeds on the sale of assets | 2,272 |
Payments of cash upon sale of businesses | (4,125) | (387)
Net cash used in investing activities | (4,399) | (90,892)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Issuance of common stock | 1,082 | 575
Payment on borrowings | (10,000) |
Change in restricted cash | 9,250 | (674)
Net cash provided by (used in) financing activities | 332 | (99)
EFFECT OF FOREIGN CURRENCY EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS: | 178 | 121
NET DECREASE IN CASH AND CASH EQUIVALENTS | (24,892) | (192,015)
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 | $ 68,940 | $ 126,928

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