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INVESTMENTS (Details) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended		9 Months Ended		12 Months Ended
	May 23, 2019	Mar. 29, 2019	Dec. 20, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Oct. 01, 2019	Dec. 19, 2017
Investments rollforward
Opening balance						$ 3,131	$ 7,971	$ 7,971
Additions/transfers during the period						2,314	2,083
Net gain (loss) on securities sold						3,375	(767)
Disposals/transfers during period						(7,193)	(3,599)
Unrealized gains (loss) on securities held				$ 200		1,597	(2,526)
Fair Value end of the period				3,224	3,162	3,224	3,162	3,131
Marketable equity securities receivable				$ 939		939
Stock issued during the period (in shares)	1,935,484	14,193,548
Stock issued during the period		$ 20,300				22,900
Proceeds from sale of investments						4,714	3,667
Cost of purchase of marketable equity securities						2,400		2,900
Price per unit		$ 1.55
Great Bear
Investments rollforward
Number of shares received from exercise of warrants				393,093
Payment to exercise warrants				$ 500
Fair value that was transferred from warrants at exercise date to marketable equity securities				1,500
Common Stock
Investments rollforward
Stock issued during the period						20,300
Warrants
Investments rollforward
Stock issued during the period						2,600
Flow Through Common Shares
Investments rollforward
Stock issued during the period			$ 14,100
Price per unit			$ 2.24							$ 2.50
Marketable equity securities
Investments rollforward
Opening balance						2,718	6,404	6,404
Additions/transfers during the period						2,314	1,882
Net gain (loss) on securities sold				3,400		3,375	(767)
Disposals/transfers during period						(5,653)	(2,895)
Unrealized gains (loss) on securities held				900		470	(1,795)
Fair Value end of the period				3,224	2,829	3,224	2,829	2,718
Marketable equity securities receivable									$ 900
Proceeds from sale of investments				5,700		5,700	3,700
Warrants
Investments rollforward
Opening balance						413	1,567	1,567
Additions/transfers during the period							201
Disposals/transfers during period						(1,540)	(704)
Unrealized gains (loss) on securities held						$ 1,127	(731)
Unrealized gains (loss) on warrants				$ 700
Fair Value end of the period					$ 333		$ 333	$ 413

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