Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt and Lines of Credit - Schedule of Future Maturities of Debt and Lines of Credit (Details)

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Long-Term Debt and Lines of Credit - Schedule of Future Maturities of Debt and Lines of Credit (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
Debt Disclosure [Abstract]  
Due within one year $ 4,575
Due between one and two years 15,548
Due between two and three years 10,975
Due between three and four years 14,935
Due between four and five years 10,755
Due beyond five years 135,693
Total future maturities $ 192,481