Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Credit Facility	$ 42,050,000
4.50% Convertible Senior Notes due 2020, net of discount	70,033,267
Loan Costs, net of accumulated amortization	(1,684,468)
Total Long-Term Debt	170,798,799	$ 166,796,853
UBS Mortgage Note Payable [Member]
Debt Instrument [Line Items]
Mortgage Note Payable	7,300,000
BOA Mortgage Note Payable [Member]
Debt Instrument [Line Items]
Mortgage Note Payable	23,100,000
Wells Fargo Mortgage Note Payable [Member]
Debt Instrument [Line Items]
Mortgage Note Payable	$ 30,000,000