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Stockholders' Equity (Deficit) - Additional Information (Detail)											12 Months Ended
	Dec. 09, 2022 shares	Dec. 08, 2022 shares	Jul. 10, 2022 USD ($) $ / shares shares	Jun. 10, 2022 USD ($) shares	Aug. 21, 2020 USD ($) $ / shares shares	Aug. 14, 2020 $ / shares shares	Aug. 31, 2019 $ / shares	Jul. 09, 2019	Jul. 08, 2019 $ / shares shares	Jun. 09, 2015 USD ($) shares	Dec. 31, 2022 USD ($) IncentivePlan Days $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Mar. 26, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares			$ 3.35		$ 4.75
Number of trading days \| Days											20
Number of stock incentive plans \| IncentivePlan											3
Stock incentive plan expiration date											Aug. 31, 2015
Share-based compensation expense \| $											$ 1,811,551	$ 1,250,585	$ 420,648
Number of stock options granted											621,348	0	0
Aggregate intrinsic values of options exercisable \| $											$ 127,605	$ 55,392	$ 98,129
Aggregate intrinsic values of options outstanding \| $											202,587	55,392	98,129
Aggregate intrinsic values of options exercised \| $											0	0	0
Unrecognized compensation cost related to unvested \| $											$ 628,767
Unrecognized compensation cost related to unvested expected remaining											2 years 21 days
Total fair value of shares vested \| $											$ 1,412,087	0	0
Number of warrants											8,392,466
Class of warrant or right, Number of securities called by warrants or rights			4,939,515	4,939,515	1,901,985
Sale of stock, Number of shares issued in transaction			4,939,515	4,939,515	2,553,314
Offering costs paid on sale of common stock \| $			$ 1,800,000	$ 1,800,000	$ 300,000
Warrants, expiration beginning date			Dec. 10, 2022
Warrants, expiration date			Jun. 10, 2027
Proceeds from Issuance of Common Stock \| $											$ 16,512,375	0	11,315,000
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right					0.6
Purchase price of warrant \| $ / shares			$ 3.35		$ 4.543
Offering Fee Included in Offering Expenses \| $					$ 200,000
Gain on Cuota Appreciation Rights extinguishment \| $											$ 315,235	$ 0	$ 0
Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted	604,243
Employees or Outside Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted												0	0
Third Party Consultant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted		17,105										0	0
Poplar Falls LLC [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares											$ 3.99
Note And Warrant Purchase Agreement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares						$ 4.67					$ 12.00
Number of warrants											65,625
Class of warrant or right, Number of securities called by warrants or rights						131,996
Warrants, expiration date						Aug. 14, 2023		Jul. 21, 2021	Jul. 12, 2024
Note And Warrant Purchase Agreement [Member] \| Second Amendment Agreement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares									$ 5.756
Class of warrant or right, Number of securities called by warrants or rights									196,135
2015 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award authorized by board										450,000
Minimum [Member] \| Series AA-2 Convertible Preferred Stock [Member] \| Penelope Mining LLC [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price of common stock \| $ / shares											$ 15.12
Maximum [Member] \| Poplar Falls LLC [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock and warrants sold											551,378
Incentive Stock Options [Member] \| 2015 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award authorized by board										450,000
Additional shares authorized for stock-based compensation											200,000
Incentive Stock Options [Member] \| 2019 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award authorized by board														1,600,000
Additional shares authorized for stock-based compensation											2,400,000
Unvested Restricted Stock Awards Excluded from EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of restricted stock, awards vested \| $											$ 2,310,598	$ 1,213,525	$ 653,653
Fair value of unvested restricted stock awards \| $											$ 176,998	$ 1,438,887	$ 1,770,676
Weighted-average grant date fair value of restricted stock awards \| $ / shares											$ 3.27	$ 7.05	$ 4.00
Weighted-average remaining contractual term											2 years 3 months 18 days	1 year 1 month 6 days	2 years
Total unrecognized compensation cost related to unvested restricted stock awards \| $											$ 203,481
Cuota Appreciation Rights [Member] \| Key Employee Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested and Outstanding											385,580
Cuota Appreciation Rights [Member] \| Non Employee Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested and Outstanding											292,663
Cuota Appreciation Rights [Member] \| Carrying Value [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Value of cuotas of Oceanica \| $ / shares											$ 3.00
Cuota Appreciation Rights [Member] \| Fair Value [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Value of cuotas of Oceanica \| $ / shares							$ 1.00
Cuota Appreciation Rights [Member] \| Maximum [Member] \| Key Employee Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award authorized by board											750,000
Cuota Appreciation Rights [Member] \| Maximum [Member] \| Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award authorized by board											600,000
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Class of warrant or right, Number of securities called by warrants or rights													56,228
Proceeds from Issuance of Common Stock \| $			$ 14,700,000		$ 11,200,000
Common Stock [Member] \| Incentive Stock Options [Member] \| 2015 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of incentive option granted											With respect to each grant of an ISO to a participant who is not a ten percent stockholder, the exercise price shall not be less than the fair market value of a share on the date the ISO is granted. With respect to each grant of an ISO to a participant who is a ten percent stockholder, the exercise price shall not be less than one hundred ten percent (110%) of the fair market value of a share on the date the ISO is granted.
Maximum aggregate number of Shares with respect to one or more Awards that may be granted to any one person during any calendar year										83,333
Maximum aggregate amount of cash that may be paid in cash to any person during any calendar year \| $										$ 2,000,000
Common Stock [Member] \| Incentive Stock Options [Member] \| Minimum [Member] \| 2015 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Eligible employee threshold percentage											10.00%
Purchase price of common stock percentage											(110.00%)