Quarterly Results Of Operations (Details) - USD ($)	3 Months Ended								12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 4,372,618	$ 2,705,383	$ 11,311,287	$ 10,576,531	$ 15,728,084	$ 16,342,394	$ 7,636,213	$ 26,328,994	$ 28,965,819	$ 66,035,685	$ 45,034,264
Income (loss) before provision for income taxes	(2,512,182)	(4,433,155)	(27,441,814)	2,146,114	(74,390,780)	5,919,236	(2,061,334)	16,306,940
Net income (loss)	$ (1,834,122)	$ (3,555,215)	$ (20,454,814)	$ 1,892,114	$ (56,153,780)	$ 4,604,236	$ (1,931,334)	$ 12,735,940	$ (23,952,037)	$ (40,744,938)	$ 14,635,669
Earnings (loss) per share	$ (0.07)	$ (0.21)	$ (1.24)	$ 0.11	$ (3.35)	$ 0.28	$ (0.11)	$ 0.75	$ (1.41)	$ (2.43)	$ 0.86