Annual report pursuant to Section 13 and 15(d)

Acquisitions (Sources and Uses of Funds) (Details)

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Acquisitions (Sources and Uses of Funds) (Details) - USD ($)
12 Months Ended
Feb. 28, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 09, 2016
Business Acquisition [Line Items]          
Purchase Price $ 14,953,513        
Sources of funds:          
Borrowings from revolving line of credit 14,953,513        
Uses of funds:          
Acquisition of MUSA Stainless assets 14,953,513 $ 11,953,513 $ 3,000,000 $ 0  
Marcegalia USA, Inc. [Member]          
Business Acquisition [Line Items]          
Purchase Price $ 14,953,513        
Uses of funds:          
Escrow deposit         $ 3,000,000