Warrant Liability (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure Of Classes Of Share Capital [Abstract]

								Warrants Outstanding at December 31,
Issuance	Expiry Date	TSX Ticker	Exercise Price	Warrants Issued		Common Shares Upon Exercise		2017		2016
Bought deal July 20, 2017 ⁽¹⁾	July 20, 2018	ALO.WT.A	C$8.00 $6.36		4,031,000		4,031,000		4,031,000		-
Bought deal November 30, 2016 ⁽²⁾	May 30, 2018	ALO.WT	C$0.70 $0.52		18,200,000		1,820,000		18,200,000		18,200,000
Private placement October 19, 2015 ⁽³⁾	October 19, 2017	-	C$3.50 $2.70		1,000,000		1,000,000		-		1,000,000
					23,231,000		6,851,000		22,231,000		19,200,000

⁽¹⁾

On July 20, 2017, the Company closed a bought deal financing and issued 4,031,000 warrants. The warrant liability was initially valued at $801, determined by the TSX opening price of C$0.25 ($0.20). For the year ended December 31, 2017, offering expense related to the warrants was $57 (note 7(c)).

⁽²⁾

For the year ended December 31, 2016, offering expense related to the warrants was $65 (note 7(c)).

⁽³⁾

On October 18, 2017, the private placement warrants were exercised for cash proceeds of C$3,500 ($2,803) and the Company issued 1,000,000 common shares. The private placement warrant liability was reclassed to common shares at a value of C$1,670 ($1,338).

Summary of Revaluation of Share Purchase Warrants

The share purchase warrants were revalued to the following:

Years ended December 31,
		2017			2016
Bought deal July 20, 2017 ⁽¹⁾	$		305	$		-
Bought deal November 30, 2016 ⁽²⁾			290			1,220
Private placement October 19, 2015			-			1,251
	$		595	$		2,471

⁽¹⁾

Valuation based on the TSX closing price of C$0.10 ($0.08).

⁽²⁾

Valuation based on the TSX closing price of C$0.02 ($0.02) (December 31, 2016 - C$0.09 ($0.07)).

Schedule of (Gain) Loss on Revaluation of Share Purchase Warrant Liabilities

During the year ended December 31, 2017, the Company recognized the following (gain) loss on revaluation of the share purchase warrant liabilities (note 7(c)):

Years ended December 31,
		2017				2016
Bought deal July 20, 2017	$		(495	)	$	-
Bought deal November 30, 2016			(930	)			339
Private placement October 19, 2015 ⁽¹⁾			87				969
	$		(1,338	)	$		1,308

⁽¹⁾

Valuation based on the following weighted average assumptions for the Black-Scholes option pricing on the exercise date and December 31, 2016:

	October 18,			December 31,
	2017			2016
Risk-free interest rate		1.6	%		0.7	%
Expected life of options	-			0.8 years
Annualized volatility		62.0	%		97.2	%
Dividend rate		0.0	%		0.0	%