Line of Credit - Additional Information (Detail) - Revolving Credit Facility [Member] - International Financial Institution [Member]		1 Months Ended	9 Months Ended
	Oct. 31, 2017 USD ($)	Apr. 30, 2016 USD ($) ExecutiveOfficer	Sep. 30, 2018	Dec. 31, 2016 USD ($)
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		$ 500,000
Line of credit facility, interest rate description			The outstanding balances under the credit facility bore interest at the floating WSJ prime rate plus 1%, with a floor of 4.5%, payable monthly in arrears.
Credit facility, interest floor rate		4.50%
Credit facility, frequency of interest payment			monthly
Credit facility, covenant terms			In addition to other restrictive covenants, a first priority security interest lien on all assets of Cooltech Distribution, a subsidiary of the Company, was pledged to the lender, an international financial institution.
Credit facility, number of executive officers guaranteed liability | ExecutiveOfficer		2
Amount drawn on credit facility				$ 500,000
Repayment of credit facility	$ 500,000
Prime rate [Member]
Line of Credit Facility [Line Items]
Credit facility interest rate		1.00%