Long-Term Debt - Additional Information (Detail) - USD ($)		3 Months Ended
	Mar. 11, 2015	Mar. 31, 2016	Mar. 31, 2015
Debt Instrument [Line Items]
Interest expense		$ 1,700,000	$ 969,000
Interest paid		2,500,000	815,000
First semi annual interest payment		1,700,000
Interest capitalized		0	0
Loan Cost Amortization		102,451	72,537
Amortization of Discount on Convertible Debt		$ 273,545	$ 25,458
4.50% Convertible Senior Notes due 2020 [Member]
Debt Instrument [Line Items]
Debt discount	$ 6,100,000