Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments - Narrative (Details)

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Fair Value of Financial Instruments - Narrative (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2018
USD ($)
financial_instrument
Jun. 30, 2018
USD ($)
financial_instrument
Jun. 30, 2017
USD ($)
Dec. 31, 2017
USD ($)
lb
$ / lb
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Gain on investment in equity securities $ 59,112 $ (29,185) $ 0  
Fair value of equity securities $ 845,000 $ 845,000   $ 537,233
Derivative asset, number of instruments held | financial_instrument 1 1    
Commodity Option | Level 2 Inputs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative asset, fair value, gross asset       $ 9,027
Notional quantities of contracts in place | lb       1,351,494
Term Loan | Interest Rate Swap | Level 2 Inputs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Variable rate basis on interest rate swap   LIBOR    
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 $ 220,440 $ 220,440   $ 127,981
Minimum | Commodity Option | Level 2 Inputs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative strike price (in usd per lb) | $ / lb       3.75
Maximum | Commodity Option | Level 2 Inputs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative strike price (in usd per lb) | $ / lb       4.64