Stockholders' Equity (Narrative) (Details) - USD ($)			1 Months Ended		6 Months Ended	12 Months Ended
	Aug. 02, 2021	Nov. 13, 2020	Jul. 21, 2021	Jun. 23, 2021	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Mar. 08, 2022	Mar. 07, 2022	Mar. 11, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized					144,302,330	144,302,330	144,302,330	144,302,330	200,000,000
Common stock, par or stated value per share					$ 0.001	$ 0.001	$ 0.001	$ 0.001
Common stock issued for cash						$ 49,515,626	$ 22,563,570
Proceeds from sale of common stock						49,515,626	0
Common stock issued upon exercise of stock options							455,000
Cash received from issuance of shares						318,572	$ 22,563,570
Unrecognized compensation cost related to unvested options						$ 2,480,399
Private Placement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units issued						505,050	14,722,397
Total number of units issued							14,722,347
Weighted average price of units issued						$ 1.39	$ 1.39
Proceeds from units issued						$ 700,000	$ 20,405,269
Number of warrants issued						252,525	7,361,199
Term of warrants							5 years
Units issuance costs						$ 381,428
Number of common shares issued						11,166,161	5,632,508
Weighted average price of common stock issued					$ 0.38		$ 0.38
Proceeds from sale of common stock						$ 50,247,725	$ 2,126,387
Number of common stock purchased						50,000
Common stock issuance costs							$ 94,839
Warrants issued, weighted average exercise price						$ 2.08	$ 2.08
DTRC [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares issued					17,725,000
Common stock issued for cash					$ 10,635,000
Common stock issued for investment in mineral properties (Shares)					750,000	2,160,239
Common stock issued for investment in mineral properties					$ 1,320,000	$ 10,380,464
Number of common shares issued in settlement of debt						144,612
Value of common shares issued in settlement of debt						$ 703,647
Number of common shares issued pursuant to RSU plan						1,450,000
Value of common shares issued pursuant to RSU plan						$ 7,177,500
Common stock issued upon exercise of options (Shares)					1,437,500
Common stock issued upon exercise of stock options					$ 455,000
Cashless exercise of stock options and warrants (Shares)					501,467
Common stock issued upon conversion of debt (Shares)					500,000
Common stock issued upon conversion of debt					$ 300,000
Special cash dividend, per common share		$ 0.22
Dividends, Cash		$ 4,357,246
Number of share options granted						2,571,250
Weighted average exercise price of share options granted						$ 4.77
Stock-based compensation expense						$ 7,829,425
Weighted average grant date fair value of options						$ 2.9
Risk-free interest rate, minimum						0.82%
Risk-free interest rate, maximum						1.28%
Estimated volatility						100.00%
Dividend yield						0.00%
Expected life						4 years 6 months
Issuance of stock based compensation restricted stock units						$ 4,585,577	$ 0
DTRC [Member] | Initial tranche of a non-brokered private placement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares issued				2,311,000
Weighted average price of common stock issued				$ 4.5
Proceeds from sale of common stock				$ 10,399,500
Common stock issuance costs						$ 732,099
DTRC [Member] | Second tranche of the non-brokered private placement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares issued			8,734,611
Weighted average price of common stock issued			$ 4.5
Proceeds from sale of common stock			$ 39,305,750
DTRC [Member] | Final tranche of private placement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares issued	120,550
Weighted average price of common stock issued	$ 4.5
Proceeds from sale of common stock	$ 542,475
DTRC [Member] | 2021 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued upon exercise of options (Shares)					1,987,500
Common stock purchase options available for award										6,250,000
Shares remaining available for future grants						1,750,625
Number of share options granted					750,000	2,571,250
Weighted average exercise price of share options granted					$ 1.92	$ 4.77
DTRC [Member] | 2022 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock purchase options available for award						6,250,000
Shares remaining available for future grants						1,750,625
Term of options						5 years
Vesting period						2 years
DTRC [Member] | Exploration Costs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense						$ 1,444,497
DTRC [Member] | General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense						$ 6,384,928	$ 124,706
DTRC [Member] | Directors, employees and consultants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Bonus shares issued to directors, employees and consultants (Shares)						1,450,000
Bonus shares issued to directors, employees and consultants						$ 7,177,500
DTRC [Member] | Directors, employees and consultants [Member] | Exploration Costs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense						1,237,500
DTRC [Member] | Directors, employees and consultants [Member] | General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense						$ 5,940,000
Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants issued						252,525	7,363,193
Warrants issued, weighted average exercise price						$ 2.08	$ 2.08
Number of warrants outstanding					7,363,193	7,615,718	7,363,193				0
Class of warrant, outstanding remaining life						3 years 11 months 15 days
Class of warrants, outstanding expiry date						Mar. 15, 2026
Restricted Stock Units ("RSU") [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value of options						$ 4.95
Number of Restricted stock units issued						1,150,000
Vesting period of restricted stock units						Jun. 04, 2022
Unrecognized compensation cost to unvested RSUs						$ 1,068,173
Number of restricted stock unit exercised						800,000
Number of restricted stock unit unexercised						350,000
Restricted Stock Units ("RSU") [Member] | Exploration Costs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense						$ 415,371
Restricted Stock Units ("RSU") [Member] | General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense						$ 4,170,206