v3.19.3
Summary of Significant Accounting Policies (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Apr. 30, 2019
Dec. 31, 2018
Summary of Significant Accounting Policies (Textual)            
Aggregate equity interest percentage 100.00%   100.00%      
Cash, uninsured amount $ 1,000,000.0   $ 1,000,000.0     $ 1,100,000
Inventory valuation reserves 200,000   200,000     200,000
Depreciation 300,000 $ 100,000 1,000,000.0 $ 200,000    
Amortization $ 300,000 $ 1,000,000.0 300,000 800,000    
Goodwill impairment     $ 0 0    
Equity method investment, ownership percentage 50.00%   50.00%      
Income from equity method investment $ 0   $ 0      
Equity method investments 2,000,000.0   2,000,000.0      
Equity method investments, upward price adjustment $ 1,500,000   1,500,000      
Deferred offering costs         $ 3,500,000  
Advertising expense     3,300,000 $ 2,700,000    
Intraperiod tax allocation     $ 0.85      
Intraperiod tax allocation remaining after distribution     15.00%      
Intraperiod tax allocation payable 85.00%   85.00%      
Revenue percentage 0.50% 0.50% 0.50% 0.50%    
Customer deposits $ 3,000,000.0   $ 3,000,000.0     3,200,000
Airgraft Inc.            
Summary of Significant Accounting Policies (Textual)            
Equity method investment, ownership percentage 1.49%   1.49%      
Advertising expense $ 1,000,000.0          
Airgraft Inc. | IPO            
Summary of Significant Accounting Policies (Textual)            
Advertising expense   $ 900,000        
Liability for returns included in accrued expenses 700,000   $ 700,000     500,000
Other current assets $ 300,000   $ 300,000     $ 300,000
Total order cost, percentage     50.00%