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Condensed Consolidating Financial Information - Cash Flow (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Cash flows from operating activities:    
Net cash provided by operating activities $ 13,168 $ 19,304
Cash flows from investing activities:    
Cash invested in multi-client data library (19,841) (21,225)
Purchase of property, plant and equipment (865) (1,272)
Net cash used in investing activities (20,706) (22,497)
Cash flows from financing activities:    
Borrowings under revolving line of credit 27,000 15,000
Payments under revolving line of credit (4,500) (15,000)
Proceeds from government relief funding 6,923 0
Payments on notes payable and long-term debt (1,814) (1,960)
Intercompany lending 0 0
Dividend payment to noncontrolling interest (217) 0
Other financing activities (91) (655)
Net cash provided by (used in) financing activities 27,301 (2,615)
Effect of change in foreign currency exchange rates on cash, cash equivalents and restricted cash 501 151
Net increase (decrease) in cash, cash equivalents and restricted cash 20,264 (5,657)
Cash, cash equivalents and restricted cash at beginning of period 33,118 33,854
Cash, cash equivalents and restricted cash at end of period 53,382 28,197
ION Geophysical Corporation    
Cash flows from operating activities:    
Net cash provided by operating activities 3,917 8,955
Cash flows from investing activities:    
Cash invested in multi-client data library 0 0
Purchase of property, plant and equipment (35) (259)
Net cash used in investing activities (35) (259)
Cash flows from financing activities:    
Borrowings under revolving line of credit 27,000 15,000
Payments under revolving line of credit (4,500) (15,000)
Proceeds from government relief funding 6,923  
Payments on notes payable and long-term debt (972) (1,159)
Intercompany lending (6,289) (13,511)
Dividend payment to noncontrolling interest 0  
Other financing activities (91) (655)
Net cash provided by (used in) financing activities 22,071 (15,325)
Effect of change in foreign currency exchange rates on cash, cash equivalents and restricted cash 0 0
Net increase (decrease) in cash, cash equivalents and restricted cash 25,953 (6,629)
Cash, cash equivalents and restricted cash at beginning of period 8,479 14,085
Cash, cash equivalents and restricted cash at end of period 34,432 7,456
The Guarantors    
Cash flows from operating activities:    
Net cash provided by operating activities 2,253 9,619
Cash flows from investing activities:    
Cash invested in multi-client data library (8,344) (15,197)
Purchase of property, plant and equipment (415) (118)
Net cash used in investing activities (8,759) (15,315)
Cash flows from financing activities:    
Borrowings under revolving line of credit 0 0
Payments under revolving line of credit 0 0
Proceeds from government relief funding 0  
Payments on notes payable and long-term debt (842) (801)
Intercompany lending 7,353 6,495
Dividend payment to noncontrolling interest 0  
Other financing activities 0 0
Net cash provided by (used in) financing activities 6,511 5,694
Effect of change in foreign currency exchange rates on cash, cash equivalents and restricted cash 0 0
Net increase (decrease) in cash, cash equivalents and restricted cash 5 (2)
Cash, cash equivalents and restricted cash at beginning of period 26 47
Cash, cash equivalents and restricted cash at end of period 31 45
All Other Subsidiaries    
Cash flows from operating activities:    
Net cash provided by operating activities 6,998 730
Cash flows from investing activities:    
Cash invested in multi-client data library (11,497) (6,028)
Purchase of property, plant and equipment (415) (895)
Net cash used in investing activities (11,912) (6,923)
Cash flows from financing activities:    
Borrowings under revolving line of credit 0 0
Payments under revolving line of credit 0 0
Proceeds from government relief funding 0  
Payments on notes payable and long-term debt 0 0
Intercompany lending (1,064) 7,016
Dividend payment to noncontrolling interest (217)  
Other financing activities 0 0
Net cash provided by (used in) financing activities (1,281) 7,016
Effect of change in foreign currency exchange rates on cash, cash equivalents and restricted cash 501 151
Net increase (decrease) in cash, cash equivalents and restricted cash (5,694) 974
Cash, cash equivalents and restricted cash at beginning of period 24,613 19,722
Cash, cash equivalents and restricted cash at end of period $ 18,919 $ 20,696