Note 6 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025	Feb. 18, 2021
Subsidiary or Equity Method Investee [Line Items]
Share-Based Payment Arrangement, Expense	$ 2,000	$ 3,000	$ 4,800	$ 4,900
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 22,300		$ 22,300
Stock issued to directors, shares (in shares)	86,532	179,836	86,532	179,836
Stock-based compensation			$ 6,081	$ 4,923
Common stock issued to directors	$ 1,382	$ 1,034	$ 1,382	$ 1,034
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			1 year 6 months
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)	223,404	151,976	270,538
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation	$ 3,300	$ 900	$ 4,500
Share Withheld For Tax Withholding Obligation Price Per Share	$ 15.07		$ 16.74	$ 5.82
Common stock, shares authorized (in shares)	1,250,000,000		1,250,000,000		1,250,000,000
Warrants Outstanding	2,060,000		2,060,000		2,068,000
Conversion of warrants	$ 8,000		$ 8,000
Exercise price	$ 8.02		$ 8.02
Conversion of Stock			Each warrant entitles the warrant holder to purchase one share of our common stock
Warrants Issued			64,000
Warrants converted			8,000
Dividend per share	$ 0.00375		$ 0.00375
Klondex Mines Ltd
Subsidiary or Equity Method Investee [Line Items]
Warrants Outstanding	2,060,000		2,060,000
Convertible Common Stock [Member]
Subsidiary or Equity Method Investee [Line Items]
Shares, Issued	10,354		10,354
Convertible Preferred Stock [Member]
Subsidiary or Equity Method Investee [Line Items]
Dividend per share	$ 0.875		$ 0.875
Common Stock [Member]
Subsidiary or Equity Method Investee [Line Items]
Common stock issued to directors	$ 22	$ 41	$ 22	$ 41
Preferred Stock [Member]
Subsidiary or Equity Method Investee [Line Items]
Shares, Issued	3,220		3,220
At the market Offering [Member]
Subsidiary or Equity Method Investee [Line Items]
Equity Distribution Agreement, Maximum Number of Shares to be Sold (in shares)	59,802,012		59,802,012			60,000,000
At the market Offering [Member] | At The Market Equity Distribution Agreement [Member]
Subsidiary or Equity Method Investee [Line Items]
Proceeds from Issuance or Sale of Equity			$ 348,500
Payments of Stock Issuance Costs			$ 5,400