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SHARE-BASED PAYMENTS - Schedule of Share-based Compensation, Outstanding and Exercisable Options (Details) - 12 months ended Dec. 31, 2018	USD ($) $ / shares shares	$ / shares
Canada, Dollars
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, quantity (in shares) | shares	210,550
Options outstanding, intrinsic value | $	$ 0
Options exercisable, quantity (in shares) | shares	210,550
Exercisable options, intrinsic value | $	$ 0
Canada, Dollars | $0.00 to $4.99 | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)		$ 0.00
Options exercisable, weighted average price (per share)		0.00
Canada, Dollars | $0.00 to $4.99 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)		4.99
Options exercisable, weighted average price (per share)		4.99
Canada, Dollars | $5.00 to $9.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, quantity (in shares) | shares	210,550
Options outstanding, weighted average price (per share)		8.01
Options outstanding, weighted average remaining contractual life	144 days
Options outstanding, intrinsic value | $	$ 0
Options exercisable, quantity (in shares) | shares	210,550
Options exercisable, weighted average price (per share)		8.10
Options exercisable, weighted average remaining contractual life	144 days
Exercisable options, intrinsic value | $	$ 0
Canada, Dollars | $5.00 to $9.99 | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)		5.00
Options exercisable, weighted average price (per share)		5.00
Canada, Dollars | $5.00 to $9.99 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)		9.99
Options exercisable, weighted average price (per share)		9.99
Canada, Dollars | $10.00 to $14.99 | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)		10.00
Options exercisable, weighted average price (per share)		10.00
Canada, Dollars | $10.00 to $14.99 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)		14.99
Options exercisable, weighted average price (per share)		14.99
Canada, Dollars | $15.00 to $19.99 | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)		15.00
Options exercisable, weighted average price (per share)		15.00
Canada, Dollars | $15.00 to $19.99 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)		19.99
Options exercisable, weighted average price (per share)		$ 19.99
United States of America, Dollars
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, quantity (in shares) | shares	1,522,204
Options outstanding, intrinsic value | $	$ 415,000
Options exercisable, quantity (in shares) | shares	1,225,160
Exercisable options, intrinsic value | $	$ 415,000
United States of America, Dollars | $0.00 to $4.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, quantity (in shares) | shares	1,240,177
Options outstanding, weighted average price (per share)	$ 2,830.00
Options outstanding, weighted average remaining contractual life	1425 days
Options outstanding, intrinsic value | $	$ 415,000
Options exercisable, quantity (in shares) | shares	943,133
Options exercisable, weighted average price (per share)	$ 3,080.00
Options exercisable, weighted average remaining contractual life	1454 days
Exercisable options, intrinsic value | $	$ 415,000
United States of America, Dollars | $0.00 to $4.99 | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)	$ 0.00
Options exercisable, weighted average price (per share)	0.00
United States of America, Dollars | $0.00 to $4.99 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)	4.99
Options exercisable, weighted average price (per share)	$ 4.99
United States of America, Dollars | $5.00 to $9.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, quantity (in shares) | shares	255,762
Options outstanding, weighted average price (per share)	$ 6,000.00
Options outstanding, weighted average remaining contractual life	1133 days
Options outstanding, intrinsic value | $	$ 0
Options exercisable, quantity (in shares) | shares	255,762
Options exercisable, weighted average price (per share)	$ 6,000.00
Options exercisable, weighted average remaining contractual life	1133 days
Exercisable options, intrinsic value | $	$ 0
United States of America, Dollars | $5.00 to $9.99 | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)	$ 5.00
Options exercisable, weighted average price (per share)	5.00
United States of America, Dollars | $5.00 to $9.99 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)	9.99
Options exercisable, weighted average price (per share)	$ 9.99
United States of America, Dollars | $10.00 to $14.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, quantity (in shares) | shares	13,515
Options outstanding, weighted average price (per share)	$ 12,590.00
Options outstanding, weighted average remaining contractual life	829 days
Options outstanding, intrinsic value | $	$ 0
Options exercisable, quantity (in shares) | shares	13,515
Options exercisable, weighted average price (per share)	$ 12,590.00
Options exercisable, weighted average remaining contractual life	829 days
Exercisable options, intrinsic value | $	$ 0
United States of America, Dollars | $10.00 to $14.99 | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)	$ 10.00
Options exercisable, weighted average price (per share)	10.00
United States of America, Dollars | $10.00 to $14.99 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)	14.99
Options exercisable, weighted average price (per share)	$ 14.99
United States of America, Dollars | $15.00 to $19.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, quantity (in shares) | shares	12,750
Options outstanding, weighted average price (per share)	$ 15,610.00
Options outstanding, weighted average remaining contractual life	741 days
Options outstanding, intrinsic value | $	$ 0
Options exercisable, quantity (in shares) | shares	12,750
Options exercisable, weighted average price (per share)	$ 15,610.00
Options exercisable, weighted average remaining contractual life	741 days
Exercisable options, intrinsic value | $	$ 0
United States of America, Dollars | $15.00 to $19.99 | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)	$ 15.00
Options exercisable, weighted average price (per share)	15.00
United States of America, Dollars | $15.00 to $19.99 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, weighted average price (per share)	19.99
Options exercisable, weighted average price (per share)	$ 19.99

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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