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Unaudited Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net income $ 12,485 $ 14,164
Adjustments to reconcile net income to net cash (used in) provided by operating activities:    
Asset impairment   237
Depreciation and amortization expense 11,368 16,986
Bad debt expense 21,516 23,201
Compensation expense related to share-based awards 3,616 2,251
Gain on disposition of property and equipment   (438)
Deferred income taxes 10,282 7,373
Changes in operating assets and liabilities (88,374) (47,510)
Net cash (used in) provided by operating activities (29,107) 16,264
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of available-for-sale investments (202,050) (137,755)
Sales of available-for-sale investments 199,340 99,718
Purchases of property and equipment (3,426) (3,352)
Proceeds on the sale of assets   3,600
Payments of cash upon sale of businesses   (62)
Net cash used in investing activities (6,136) (37,851)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Issuance of common stock 2,548 581
Payment on borrowings   (38,000)
Payments of employee tax associated with stock compensation (1,170) (550)
Net cash provided by (used in) financing activities 1,378 (37,969)
EFFECT OF FOREIGN CURRENCY EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS: 48 (150)
NET DECREASE IN CASH AND CASH EQUIVALENTS (33,817) (59,706)
CASH AND CASH EQUIVALENTS, beginning of the period 50,882 116,740
CASH AND CASH EQUIVALENTS, end of the period $ 17,065 $ 57,034