Indirect Hotel Operating Expenses - Summary of Indirect Hotel Operating Expenses (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Component Of Operating Cost And Expense [Line Items]
Total indirect hotel operating expenses	$ 16,027,496	$ 15,209,249	$ 48,901,037	$ 45,019,742
Sales and Marketing [Member]
Component Of Operating Cost And Expense [Line Items]
Total indirect hotel operating expenses	4,015,942	3,397,811	12,046,880	10,547,138
General and Administrative [Member]
Component Of Operating Cost And Expense [Line Items]
Total indirect hotel operating expenses	3,540,054	3,194,007	10,880,130	9,788,564
Repairs and Maintenance [Member]
Component Of Operating Cost And Expense [Line Items]
Total indirect hotel operating expenses	1,887,113	1,805,103	5,655,711	5,174,066
Utilities [Member]
Component Of Operating Cost And Expense [Line Items]
Total indirect hotel operating expenses	1,749,562	1,568,324	4,735,195	4,394,631
Property Taxes [Member]
Component Of Operating Cost And Expense [Line Items]
Total indirect hotel operating expenses	950,148	1,539,066	4,113,025	4,518,267
Management Fees, Including Incentive [Member]
Component Of Operating Cost And Expense [Line Items]
Total indirect hotel operating expenses	1,066,120	999,866	3,570,974	3,090,515
Franchise Fees [Member]
Component Of Operating Cost And Expense [Line Items]
Total indirect hotel operating expenses	1,059,522	888,460	3,244,833	3,061,535
Insurance [Member]
Component Of Operating Cost And Expense [Line Items]
Total indirect hotel operating expenses	746,175	620,244	2,114,351	1,845,702
Information and Telecommunications [Member]
Component Of Operating Cost And Expense [Line Items]
Total indirect hotel operating expenses	515,225	412,714	1,317,290	1,243,847
Other [Member]
Component Of Operating Cost And Expense [Line Items]
Total indirect hotel operating expenses	$ 497,635	$ 783,654	$ 1,222,648	$ 1,355,477