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Statements of cash flows
12 Months Ended
Dec. 31, 2017
Statement Of Cash Flows Disclosure [Abstract]  
Statements of cash flows

21. Supplemental cash flow information

Other operating items included in the statements of cash flows are as follows:

20172016
Changes in non-cash working capital:
Accounts receivable$(174,613)$1,529
Inventories299,980(73,833)
Supplies and prepaid expenses15,43610,867
Accounts payable and accrued liabilities(64,689)(17,989)
Reclamation payments(14,334)(13,507)
Amortization of purchase price allocation(2,996)27,848
Other28,273(4,049)
Other operating items$87,057$(69,134)

The changes in liabilities arising from financing activities were as follows:

Long-termInterestDividendsShare
debtpayablepayablecapitalTotal
Balance at January 1, 2017$1,493,327$12,401$39,579$1,862,646$3,407,953
Changes from financing cash flows:
Dividends paid--(158,297)-(158,297)
Interest paid-(69,498)--(69,498)
Shares issued, stock option plan---44
Total cash changes-(69,498)(158,297)4(227,791)
Non-cash changes:
Amorization of issue costs1,144---1,144
Dividends declared--158,297-158,297
Interest expense-72,067--72,067
Shares issued, stock option plan---22
Total non-cash changes1,14472,067158,2972231,510
Balance at December 31, 2017$1,494,471$14,970$39,579$1,862,652$3,411,672