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Notes Payable and Capital Lease Obligations (Details) - USD ($)
Jun. 30, 2018
Dec. 31, 2017
Notes and Loans Payable [Abstract]    
Revolving credit note payable to PNC Bank N.A. ("PNC") $ 19,253,000 $ 16,455,000
Term loans, PNC 2,733,000 3,471,000
Capital lease obligations 2,439,000 3,085,000
Related party notes payable, net of debt discount 3,025,000 1,912,000
Convertible notes payable-third parties, net of debt discount 2,244,000 1,930,000
Subtotal 29,694,000 26,853,000
Less: Current portion of notes and capital obligations (26,674,000) (23,405,000)
Notes payable and capital lease obligations, net of current portion $ 3,020,000 $ 3,448,000