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MARKETABLE SECURITIES
 12 Months Ended
Dec. 31, 2018
Disclosure Of Detailed Information About Marketable Securities [Abstract]  
MARKETABLE SECURITIES
MARKETABLE SECURITIES
 
December 31, 2018

December 31, 2017

 
$

$

Balance, beginning of year
114,001

148,944

Additions
22,674

5,295

Disposals
(63,445
)
(72,132
)
Fair value adjustments
(43,688
)
31,894

Balance, end of year
29,542

114,001



During 2018, we purchased 8.2 million common shares of SilverCrest Metals Inc. ("SilverCrest") for total consideration of $23.1 million and sold our remaining position of 9.0 million common shares of Pretium Resources Inc. ("Pretium") for pre-tax cash proceeds of approximately $63.4 million. The fair value adjustments in 2018 related primarily to the Pretium shares.

On acquisition of the SilverCrest shares, we recognized an expense of $2.8 million related to the premium paid for the shares over the prevailing market price. Due to the subsequent increase in the SilverCrest share price, we recognized a gain of $4.3 million in Other Comprehensive Income at December 31, 2018.

The SilverCrest common shares are subject to a hold period of four months from their December 7, 2018 acquisition date.