Quarterly Results of Operations (Unaudited) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Revenues, net	$ 71,486,350	$ 74,110,376	$ 69,391,315	$ 77,389,597	$ 86,692,209	$ 69,092,740	$ 74,938,700	$ 79,370,609	$ 292,377,638	$ 310,094,258	$ 236,784,625
Total operating expenses	74,582,671	68,281,229	68,880,374	71,202,232	73,220,074	60,262,456	65,953,230	73,051,692	282,946,506	272,487,452	236,924,681
Operating income	(3,096,321)	5,829,147	510,941	6,187,365	13,472,135	8,830,284	8,985,470	6,318,917	9,431,132	37,606,806	(140,056)
Net (loss)/income	$ (11,171,453)	$ (4,562,989)	$ (5,992,156)	$ 29,483	$ 6,486,350	$ 2,584,822	$ 3,450,767	$ 52,745	$ (21,697,115)	$ 12,574,684	$ (43,796,685)
Basic income (in dollars per share)	$ (0.16)	$ (0.06)	$ (0.08)	$ 0	$ 0.09	$ 0.04	$ 0.05	$ 0	$ (0.30)	$ 0.18	$ (0.63)
Diluted income (in dollars per share)	$ (0.16)	$ (0.06)	$ (0.08)	$ 0	$ 0.09	$ 0.04	$ 0.05	$ 0	$ (0.30)	$ 0.18	$ (0.63)
Loss on debt extinguishment				$ (2,300,000)					$ (2,268,452)	$ 0	$ (14,968,609)
One-time payment to Department of Treasury	$ 1,100,000