Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments - Narrative (Details)

v3.19.2
Fair Value of Financial Instruments - Narrative (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2019
USD ($)
financial_instrument
Jun. 30, 2019
USD ($)
financial_instrument
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Proceeds from sale of equity securities   $ 1,091,644 $ 0  
Realized gain on sale of equity securities $ 148,416 474,227 0  
Unrealized loss on equity securities 48,000 101,125 29,185  
Fair value of equity securities $ 2,760,000 $ 2,760,000   $ 2,935,000
Derivative asset, number of instruments held | financial_instrument 1 1    
Level 3 Inputs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Charge related to change in fair value of earn-out liability   $ 6,366,324    
MUSA-Stainless | Level 3 Inputs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Charge related to change in fair value of earn-out liability   0 $ 2,461,658  
Term Loan | Palmer of Texas | Interest Rate Swap | Level 2 Inputs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative asset, fair value, gross asset $ 23,371 $ 23,371   $ 147,465