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Condensed Consolidating Financial Information - Cash Flow (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Cash flows from operating activities:    
Net cash provided by (used in) operating activities $ (6,966) $ 15,398
Cash flows from investing activities:    
Investment in multi-client data library (9,668) (8,767)
Purchase of property, plant and equipment (496) (807)
Net cash used in investing activities (10,164) (9,574)
Cash flows from financing activities:    
Borrowings under revolving line of credit 27,000 0
Payments on notes payable and long-term debt (760) (715)
Intercompany lending 0 0
Other financing activities (10) (239)
Net cash provided by (used in) financing activities 26,230 (954)
Effect of change in foreign currency exchange rates on cash, cash equivalents and restricted cash 470 81
Net increase in cash, cash equivalents and restricted cash 9,570 4,951
Cash, cash equivalents and restricted cash at beginning of period 33,118 33,854
Cash, cash equivalents and restricted cash at end of period 42,688 38,805
ION Geophysical Corporation    
Cash flows from operating activities:    
Net cash provided by (used in) operating activities 330 5,216
Cash flows from investing activities:    
Investment in multi-client data library 0 0
Purchase of property, plant and equipment (398) (24)
Net cash used in investing activities (398) (24)
Cash flows from financing activities:    
Borrowings under revolving line of credit 27,000  
Payments on notes payable and long-term debt (485) (434)
Intercompany lending (6,289) (13,511)
Other financing activities (10) (239)
Net cash provided by (used in) financing activities 20,216 (14,184)
Effect of change in foreign currency exchange rates on cash, cash equivalents and restricted cash 0 0
Net increase in cash, cash equivalents and restricted cash 20,148 (8,992)
Cash, cash equivalents and restricted cash at beginning of period 8,479 14,085
Cash, cash equivalents and restricted cash at end of period 28,627 5,093
The Guarantors    
Cash flows from operating activities:    
Net cash provided by (used in) operating activities (1,570) (825)
Cash flows from investing activities:    
Investment in multi-client data library (5,382) (5,363)
Purchase of property, plant and equipment (98) (48)
Net cash used in investing activities (5,480) (5,411)
Cash flows from financing activities:    
Borrowings under revolving line of credit 0  
Payments on notes payable and long-term debt (275) (281)
Intercompany lending 7,353 6,495
Other financing activities 0 0
Net cash provided by (used in) financing activities 7,078 6,214
Effect of change in foreign currency exchange rates on cash, cash equivalents and restricted cash 0 0
Net increase in cash, cash equivalents and restricted cash 28 (22)
Cash, cash equivalents and restricted cash at beginning of period 26 47
Cash, cash equivalents and restricted cash at end of period 54 25
All Other Subsidiaries    
Cash flows from operating activities:    
Net cash provided by (used in) operating activities (5,726) 11,007
Cash flows from investing activities:    
Investment in multi-client data library (4,286) (3,404)
Purchase of property, plant and equipment 0 (735)
Net cash used in investing activities (4,286) (4,139)
Cash flows from financing activities:    
Borrowings under revolving line of credit 0  
Payments on notes payable and long-term debt 0 0
Intercompany lending (1,064) 7,016
Other financing activities 0 0
Net cash provided by (used in) financing activities (1,064) 7,016
Effect of change in foreign currency exchange rates on cash, cash equivalents and restricted cash 470 81
Net increase in cash, cash equivalents and restricted cash (10,606) 13,965
Cash, cash equivalents and restricted cash at beginning of period 24,613 19,722
Cash, cash equivalents and restricted cash at end of period $ 14,007 $ 33,687