Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Consolidated Statements of Cash Flows

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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Cash flows from operating activities      
Net loss $ (40,459) $ (77,621) $ (1,373,511)
Adjustments to reconcile net loss to net cash provided by operating activities:      
Goodwill impairment 942,408
Impairment of other long-lived assets 6,759 24,924 288,977
Depreciation and amortization 66,635 92,877 108,395
Stock-based compensation 17,722 20,773 30,010
Foreign currency transaction loss (10,429) 2,147 8,612
Deferred income taxes 2,404 (10,378) (19,129)
Change in fair value of obligations in connection with acquisitions 1,378 (872) (23,671)
Other non-cash items 3,520 1,220 17
Change in cash attributable to changes in operating assets and liabilities, net of the impact of acquisitions:      
Accounts receivable, net (7,581) 2,009 25,075
Inventories 2,174 642 (12,408)
Net investment in sales-type leases 12,196 5,646 (6,497)
Other current assets and prepaid expenses (3,665) 395 11,262
Other non-current assets (802) 933 (439)
Accounts payable (1,206) 1,969 (1,937)
Other current liabilities (1,114) (6,330) (7,464)
Deferred revenues 3,421 3,380 10,141
Other non-current liabilities 10,954 259 (1,751)
Net cash provided by (used in) operating activities 61,907 61,973 (21,910)
Cash flows from investing activities      
Purchase of property and equipment (22,308) (45,125) (84,299)
Proceeds from maturities of bank deposits and restricted deposits 73,836 191,741
Investment in bank deposits and restricted deposits (477) (67,177) (187,264)
Cash paid for acquisitions, net of cash acquired (9,905)
Investment in unconsolidated entities (3,568) (23,064) (250)
Purchase of intangible assets (1,540) (2,002) (2,747)
Other investing activities (361) (457) (378)
Net cash used in investing activities (28,254) (63,989) (93,102)
Cash flows from financing activities      
Proceeds from long-term debt 10,000 26,000
Repayment of long-term debt (3,714)
Proceeds from short-term debt 125,000
Payment of obligations in connection with acquisitions (1,476) (1,386) (19,875)
Repayment of short-term debt (175,000)
Proceeds from exercise of stock options 5,888 1,185 2,871
Net cash provided by (used in) financing activities 10,698 25,799 (67,004)
Effect of exchange rate changes on cash and cash equivalents 4,082 (1,047) (2,533)
Net change in cash and cash equivalents 48,433 22,736 (184,549)
Cash and cash equivalents, beginning of year 280,328 257,592 442,141
Cash and cash equivalents, end of year 328,761 280,328 257,592
Supplemental disclosure of cash flow information      
Cash paid for income taxes, net of tax refunds 1,247 5,278 13,487
Cash paid for interest 1,140 1,514
Transfer of inventory to fixed assets 4,844 5,085 8,886
Transfer of fixed assets to inventory $ 1,188 $ 1,068 $ 3,661