Segment information (Tables)

3 Months Ended

6 Months Ended

12 Months Ended

May 31, 2016

May 31, 2015

May 31, 2016

May 31, 2015

Nov. 30, 2015

Schedule of Segment Reporting Information [Table Text Block]

For the three months ended May 31, 2016:
	Alaska,	Antioquia,	Corporate and
	USA	Colombia	other		Total
	$	$	$		$
Amortization	10	32	10		52
Foreign exchange loss	-	1	-		1
Interest and other income	-	-	(18	)	(18	)
Mineral properties expense	457	154	-		611
Overhead costs	14	-	988		1,002
Loss for the period	481	187	980		1,648

For the three months ended May 31, 2015:
	Alaska,		Antioquia,	Corporate and
	USA		Colombia	other		Total
	$		$	$		$
Amortization	81		-	12		93
Foreign exchange gain	-		-	(7	)	(7	)
Interest and other income	-		-	(4	)	(4	)
Mineral properties expense	291		-	-		291
Overhead costs	(10	)	-	1,387		1,377
Loss for the period	362		-	1,388		1,750

For the six months ended May 31, 2016:
	Alaska,	Antioquia,	Corporate and
	USA	Colombia	other		Total
	$	$	$		$
Amortization	20	64	22		106
Foreign exchange loss	2	5	3		10
Interest and other income	-	-	(36	)	(36	)
Mineral properties expense	990	288	-		1,278
Overhead costs	20	-	1,965		1,985
Loss for the period	1,032	357	1,954		3,343

For the six months ended May 31, 2015:
	Alaska,	Antioquia,	Corporate and
	USA	Colombia	other		Total
	$	$	$		$
Amortization	211	-	25		236
Foreign exchange loss (gain)	3	-	(30	)	(27	)
Interest and other income	-	-	(4	)	(4	)
Mineral properties expense	618	-	-		618
Overhead costs	32	-	2,425		2,457
Loss for the period	864	-	2,416		3,280

Schedule of Segment Assets and Liabilties [Table Text Block]

As of May 31, 2016:
	Alaska,		Antioquia,		Corporate and
	USA		Colombia		other		Total
	$		$		$		$
Mineral properties and development costs	30,586		3,264		-		33,850
Plant and equipment	93		210		42		345
Assets	31,082		3,601		13,242		47,925
Liabilities	(98	)	(17	)	(354	)	(469	)

As of November 30, 2015:
	Alaska,		Antioquia,		Corporate and
	USA		Colombia		other		Total
	$		$		$		$
Mineral properties and development costs	30,586		3,264		-		33,850
Plant and equipment	113		273		60		446
Assets	31,509		3,631		16,041		51,181
Liabilities	(341	)	(24	)	(386	)	(751	)