Long-Term Indebtedness (Schedule) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Unamortized deferred financing fees	$ (361)	$ (76)
Long-term debt, net	294,124	49,924
Less current portion	596	0
Long-term debt	293,528	49,924
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt, gross	240,060	0
Shelf-Loan Facility
Debt Instrument [Line Items]
Long-term debt, gross	50,000	50,000
Other Debt
Debt Instrument [Line Items]
Long-term debt, gross	$ 4,425	$ 0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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