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Condensed Consolidated Statement of Cash Flows - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Operating activities:    
Cash provided by operating activities $ 12,576 $ 19,113
Investing activities:    
Capital expenditures (3,093) (6,053)
Proceeds from sale of equipment 325  
Proceeds from maturities of certificates of deposit 1,935  
Purchase of mining assets   (18,000)
Other   (589)
Cash used in investing activities (833) (24,642)
Financing activities:    
Payments on bank debt (6,563) (8,366)
Bank borrowings   15,000
Debt issuance cost   (2,090)
Dividends (1,206) (1,194)
Cash provided by (used in) financing activities (7,769) 3,350
Increase (decrease) in cash and cash equivalents 3,974 (2,179)
Cash and cash equivalents, beginning of period 9,788 15,930
Cash and cash equivalents, end of period $ 13,762 $ 13,751