Mineral Rights and Properties	3 Months Ended
Jun. 30, 2022
Mineral Industries Disclosures [Abstract]
Mineral Rights and Properties [Text Block]	Note 2 - Mineral Rights and Properties On September 26, 2012, the Company (via the consolidated DTRC, noted as "DTRC" in the disclosures below) was re-organized with North Homestake Mining Company and acquired the Blind Gold Property located in the Homestake District of South Dakota. In 2018 and 2019, DTRC acquired additional acreage associated with DTRC's City Creek Property and the Tinton Gold Property. In 2020 and 2021, DTRC increased the size of the DTRC's Blind Gold Property, the Tinton Property, the Poorman Anticline Property, the Ragged Top Gold Project, the West Corridor Property, the City Creek Property and added the South Lead/Whistler Gulch Property through a combination of acquisitions and claim staking. On October 26, 2020, the Company completed the purchase of the Maitland Gold Property from Homestake Mining Company of California ("HMCC"), a wholly owned subsidiary of Barrick Gold Corporation ("Barrick"). At closing, DTRC paid Barrick $3.5 million in cash and issued 750,000 shares of DTRC's common stock valued at $1.76 per share, for total consideration of $4.82 million. Additionally, Barrick retained a 2.5% net smelter return royalty on the property. The 2,112 mineral-acre Maitland acquisition is an important component of the Company's exploration and development strategy for the structural corridor that extends from the Homestake Gold Mine to the Company's Blind Gold Property at the northern end of the Homestake District. On September 7, 2021, the Company entered into an option agreement to acquire surface rights and certain facilities in the Homestake District, South Dakota from HMCC. The agreement provides for exclusive access to three extensive historic data sets which chronicle its 145-year exploration and mining history throughout South Dakota. Under the terms of the agreement, DTRC has a three-year option to acquire 4,261 acres of surface rights with attendant facilities and data held by HMCC. In consideration for the option, DTRC made a cash payment of $1.3 million and issued 1 million DTRC common stock valued at $4,850,000 to Barrick and will make annual option payments of $300,000 during the option period. DTRC may exercise the option on or before September 7, 2024, by assuming all of the liabilities and bonds currently held by HMCC in the Homestake District. In addition, on exercise of the option, the Company will issue Barrick 3 million shares of common stock and grant a 2.5% net smelter royalty ("NSR") to Barrick with respect to any gold that may be recovered only from the Grizzly Gulch property. On October 14, 2021, the Company entered into an option agreement to acquire Barrick's interest in the Richmond Hill Property in the Homestake District, South Dakota from LAC Minerals (USA) LLC and HMCC. Under the terms of the agreement, the Company has a three-year option to acquire 2,126 acres of surface and mineral rights with attendant facilities. The Company issued 400,000 DTRC shares of common stock valued at $1,816,000 to Barrick and will make annual option payments of $100,000 during the option period. The Company may exercise the option on or before September 7, 2024, by assuming all the liabilities and bonds associated with the Richmond Hill Property. In addition, on exercise of the option, the Company will issue Barrick an additional 400,000 shares of common stock and grant a 1% NSR to Barrick with respect to any gold that may be recovered from the Richmond Hill Property. In total, the Company currently holds eleven brownfield project areas in the district comprised of 1,905 unpatented mining claims (32,256 unpatented acres), the Homestake Option Area (4,261 patented acres), Barrick's interest in the Richmond Hill Option Area (2,126 patented acres) and additional lands and mineral rights throughout the district (3,201 patented acres) for a combination of surface and mineral lease rights covering a total of 43,971 acres. The Company has not established that any of its projects or properties contain proven or probable mineral reserves under Regulation S-K Subpart 1300 ("S-K 1300"). As of June 30, 2022 and March 31, 2022, the carrying cost of the Company's mineral properties totaled $77,000,841 and $76,962,958, respectively. As of June 30, 2022, the Company is in the exploration stage and has not commenced amortization of its properties. The Company will capitalize certain costs to its projects when the costs can be specifically attributable to a project, or when it is reasonable to allocate those costs. General regional exploration costs are not allocated to specific properties.

Note 2 - Mineral Rights and Properties

On September 26, 2012, the Company (via the consolidated DTRC, noted as "DTRC" in the disclosures below) was re-organized with North Homestake Mining Company and acquired the Blind Gold Property located in the Homestake District of South Dakota. In 2018 and 2019, DTRC acquired additional acreage associated with DTRC's City Creek Property and the Tinton Gold Property. In 2020 and 2021, DTRC increased the size of the DTRC's Blind Gold Property, the Tinton Property, the Poorman Anticline Property, the Ragged Top Gold Project, the West Corridor Property, the City Creek Property and added the South Lead/Whistler Gulch Property through a combination of acquisitions and claim staking.

On October 26, 2020, the Company completed the purchase of the Maitland Gold Property from Homestake Mining Company of California ("HMCC"), a wholly owned subsidiary of Barrick Gold Corporation ("Barrick"). At closing, DTRC paid Barrick $3.5 million in cash and issued 750,000 shares of DTRC's common stock valued at $1.76 per share, for total consideration of $4.82 million. Additionally, Barrick retained a 2.5% net smelter return royalty on the property. The 2,112 mineral-acre Maitland acquisition is an important component of the Company's exploration and development strategy for the structural corridor that extends from the Homestake Gold Mine to the Company's Blind Gold Property at the northern end of the Homestake District.

On September 7, 2021, the Company entered into an option agreement to acquire surface rights and certain facilities in the Homestake District, South Dakota from HMCC. The agreement provides for exclusive access to three extensive historic data sets which chronicle its 145-year exploration and mining history throughout South Dakota. Under the terms of the agreement, DTRC has a three-year option to acquire 4,261 acres of surface rights with attendant facilities and data held by HMCC. In consideration for the option, DTRC made a cash payment of $1.3 million and issued 1 million DTRC common stock valued at $4,850,000 to Barrick and will make annual option payments of $300,000 during the option period. DTRC may exercise the option on or before September 7, 2024, by assuming all of the liabilities and bonds currently held by HMCC in the Homestake District. In addition, on exercise of the option, the Company will issue Barrick 3 million shares of common stock and grant a 2.5% net smelter royalty ("NSR") to Barrick with respect to any gold that may be recovered only from the Grizzly Gulch property.

On October 14, 2021, the Company entered into an option agreement to acquire Barrick's interest in the Richmond Hill Property in the Homestake District, South Dakota from LAC Minerals (USA) LLC and HMCC. Under the terms of the agreement, the Company has a three-year option to acquire 2,126 acres of surface and mineral rights with attendant facilities. The Company issued 400,000 DTRC shares of common stock valued at $1,816,000 to Barrick and will make annual option payments of $100,000 during the option period. The Company may exercise the option on or before September 7, 2024, by assuming all the liabilities and bonds associated with the Richmond Hill Property. In addition, on exercise of the option, the Company will issue Barrick an additional 400,000 shares of common stock and grant a 1% NSR to Barrick with respect to any gold that may be recovered from the Richmond Hill Property.

In total, the Company currently holds eleven brownfield project areas in the district comprised of 1,905 unpatented mining claims (32,256 unpatented acres), the Homestake Option Area (4,261 patented acres), Barrick's interest in the Richmond Hill Option Area (2,126 patented acres) and additional lands and mineral rights throughout the district (3,201 patented acres) for a combination of surface and mineral lease rights covering a total of 43,971 acres. The Company has not established that any of its projects or properties contain proven or probable mineral reserves under Regulation S-K Subpart 1300 ("S-K 1300").

As of June 30, 2022 and March 31, 2022, the carrying cost of the Company's mineral properties totaled $77,000,841 and $76,962,958, respectively. As of June 30, 2022, the Company is in the exploration stage and has not commenced amortization of its properties. The Company will capitalize certain costs to its projects when the costs can be specifically attributable to a project, or when it is reasonable to allocate those costs. General regional exploration costs are not allocated to specific properties.