Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Wells Fargo Note Payable) (Details)

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Long-Term Debt (Wells Fargo Note Payable) (Details)
3 Months Ended
Mar. 31, 2018
Wells Fargo Note Payable | LIBOR  
Debt Instrument [Line Items]  
Variable interest rate 2.25%