Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax examination, likelihood of unfavorable settlement	greater than 50 percent
Uncertain tax positions				$ 0	$ 0
Accrued interest or penalties				$ 0	$ 0
Recognized interest or penalties	$ 0	$ 0
Income taxes paid other than state minimum taxes	$ 0		$ 0
U.S. federal corporate tax rate	21.00%		35.00%
Tax cuts and jobs act of 2017, change in tax rate, decrease in deferred tax assets	$ 16,232,211
Tax cuts and jobs act of 2017, change in tax rate, net adjustment in deferred tax expense	$ 0
Percentage of taxable income in utilization of net operating losses	80.00%
Net operating loss carryforwards expiration period	20 years