XML 31 R17.htm IDEA: XBRL DOCUMENT v3.19.1

Mineral Property (Tables)

3 Months Ended

Mar. 31, 2019

Extractive Industries [Abstract]

Investment in Mineral Property

(in thousands)	March 31,		December 31,
	2019	2018
Exploration
Lik project (Alaska – US)	$15,611	$15,611
La Promesa (Peru)	6	6
Montana Royalty property (US)	-	40
Total exploration mineral property	$15,617	$15,657

Exploration Expense

(in thousands)	Three months ended  March 31,
	2019	2018
Geologic and field expenses	$147	$24
Administrative	16	156
Total exploration costs	$ 163	$ 180

X

- Definition

Mineral Property Exploration Expense

+ References

No definition available.

+ Details

Name:	XPL_MineralPropertyExplorationExpenseTableTextBlock
Namespace Prefix:	XPL_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	srt_ExtractiveIndustriesAbstract
Namespace Prefix:	srt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration