Annual report pursuant to Section 13 and 15(d)

Income Taxes (Provision Benefit For Income Taxes) (Detail)

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Income Taxes (Provision Benefit For Income Taxes) (Detail) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
U.S. Income Taxes:      
Current Provision $ 0 $ 0 $ (3,730,342)
Deferred Provision 3,639,752 (5,963,589) 3,730,342
Valuation Allowance (3,639,752) 5,963,589 0
Income Taxes Outside the U.S.:      
Current Provision 0 0 0
Deferred Provision 215,745 (197,907) 0
Valuation Allowance (215,745) 197,907 0
State Income Taxes:      
Current Provision 0 0 0
Deferred Provision (59,530) (75,442) (128,572)
Valuation Allowance 59,530 75,442 128,572
Total Provision $ 0 $ 0 $ 0