Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2019	81,269,868
Balance at Dec. 31, 2019	$ 8,127	$ 220,808,037	$ (123,032,408)	$ 0	$ 97,783,756
Net income			56,342,010		56,342,010
Repurchase of common stock (in shares)	(4,628,473)
Repurchase of common stock	$ (463)		(28,502,483)		(28,502,946)
Issuance of common stock upon exercise of stock options (in shares)	11,822
Issuance of common stock upon exercise of stock options	$ 1	(1)			0
Issuance of common stock upon vesting of RSUs (in shares)	177,876
Issuance of common stock upon vesting of RSUs	$ 18	(18)			0
Issuance of common stock upon exercise of warrants (in shares)	393,646
Issuance of common stock upon exercise of warrants	$ 40	3,003,477			3,003,517
Payment of common stock tendered for employee stock-based compensation tax obligations (in shares)	(29,035)
Payment of common stock tendered for employee stock-based compensation tax obligations	$ (3)	(184,013)			(184,016)
Stock-based compensation		1,350,948			1,350,948
Balance (in shares) at Dec. 31, 2020	77,195,704
Balance at Dec. 31, 2020	$ 7,720	224,978,430	(95,192,881)	0	129,793,269
Net income			69,450,766		69,450,766
Repurchase of common stock (in shares)	(3,787,683)
Repurchase of common stock	$ (379)		(26,021,140)		$ (26,021,519)
Issuance of common stock upon exercise of stock options (in shares)					0
Issuance of common stock upon vesting of RSUs (in shares)	162,876
Issuance of common stock upon vesting of RSUs	$ 16	(16)			$ 0
Payment of common stock tendered for employee stock-based compensation tax obligations (in shares)	(27,295)
Payment of common stock tendered for employee stock-based compensation tax obligations	$ (3)	(173,915)			(173,918)
Stock-based compensation		1,265,809			1,265,809
Balance (in shares) at Dec. 31, 2021	73,543,602
Balance at Dec. 31, 2021	$ 7,354	226,070,308	(51,763,255)	0	174,314,407
Net income			33,904,806		33,904,806
Repurchase of common stock (in shares)	(1,823,738)
Repurchase of common stock	$ (182)		(13,006,149)		$ (13,006,331)
Issuance of common stock upon exercise of stock options (in shares)					0
Issuance of common stock upon vesting of RSUs (in shares)	132,396
Issuance of common stock upon vesting of RSUs	$ 13	(13)			$ 0
Issuance of common stock upon exercise of warrants (in shares)	824,903
Issuance of common stock upon exercise of warrants	$ 83	6,120,695			6,120,778
Payment of common stock tendered for employee stock-based compensation tax obligations (in shares)	(1,973)
Payment of common stock tendered for employee stock-based compensation tax obligations		(12,533)			(12,533)
Stock-based compensation		1,779,310			1,779,310
Cash dividend ($0.45 per share)			(32,940,395)		(32,940,395)
Balance (in shares) at Dec. 31, 2022	72,675,190
Balance at Dec. 31, 2022	$ 7,268	$ 233,957,767	$ (63,804,993)	$ 0	$ 170,160,042