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LEASES (Tables)
 12 Months Ended
Dec. 31, 2020
Leases [Abstract]  
Disclosure of quantitative information about right-of-use assets The following table presents the changes in carrying amount of the Company's right-of-use assets during the years ended December 31, 2020 and 2019:
2020 2019
Balance, beginning of year $ 3,502  $ — 
Right-of-use assets acquired on Alacer acquisition (note 4(a)) 119,568  — 
Additions 2,857  4,584 
Terminations (981) — 
Depreciation for the year (3,304) (1,082)
Balance, end of year $ 121,642  $ 3,502 
Disclosure of quantitative information about lease liabilities
The following is a summary of the movements in the Company's lease liabilities during the years ended December 31, 2020 and 2019:

2020 2019
Balance, beginning of year $ 3,792  $ 4,310 
Financing cash flows:
Lease payments (4,883) (1,265)
Other changes:
Lease liabilities assumed on acquisition (note 4(a)) 119,568  — 
Additions 2,857  264 
Terminations (594) — 
Unrealized foreign exchange loss 71  204 
Interest expense 1,904  279 
Balance, end of year $ 122,715  $ 3,792 
Classified as:
Current (1)
 $ 5,686  $ 446 
Non-current 117,029  3,346 
$ 122,715  $ 3,792 
(1)Included in accounts payable and accrued liabilities (note 13).
Disclosure of additional information about leasing activities for lessee Amounts recognized in statements of income
Years ended December 31 2020 2019
Right-of-use asset depreciation $ 3,304  $ 1,082 
Interest expense on lease liabilities (1)
 1,904  $ 279 
(1)Included in interest expense and finance costs.
Amounts recognized in statements of cash flows
Years ended December 31 2020 2019
Total cash outflow for leases $ (8,198) $ (1,265)