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Loan Arrangement with Former Related Party - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 29, 2016	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Common stock, shares outstanding		211,787,573		187,029,967
Remaining debt amount		$ 70,020		$ 72,089
Accrued interest due to related party		2,002		6,835
Promissory notes		70,020		72,089
The Mann Group LLC
Related Party Transaction [Line Items]
Remaining debt amount			$ 70,100	72,100
Accrued interest due to related party				$ 6,800
Promissory notes		$ 70,000
The Mann Group LLC | Loan Arrangement
Related Party Transaction [Line Items]
Trustee substantial portion disposed term	3 years
Common stock, shares outstanding		9,300,000
Additional common stock shares reserved for issuance		14,000,000
The Mann Group LLC | Loan Arrangement | Common Stock
Related Party Transaction [Line Items]
Written notice period		65 days
The Mann Group LLC | Loan Arrangement | Maximum
Related Party Transaction [Line Items]
Percentage of common stock shares outstanding		5.00%
The Mann Group LLC | Loan Arrangement | Maximum | Common Stock
Related Party Transaction [Line Items]
Percentage of beneficially own in excess		19.99%
The Mann Group LLC | Loan Arrangement | Minimum | Common Stock
Related Party Transaction [Line Items]
Percentage of beneficially own in excess		9.99%
Mr.Mann | Loan Arrangement | Common Stock
Related Party Transaction [Line Items]
Percentage of beneficial interest owned	36.00%

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