Debt	3 Months Ended
Mar. 31, 2018
Debt Disclosure [Abstract]
Debt	Debt Credit Agreement On February 15, 2018 (the "Effective Date") the Company entered into Amendment No. 1 (the "Amendment") to the Credit Agreement, dated as of June 1, 2017, (the Credit Agreement as amended by the Amendment is hereinafter referred to as the "Credit Agreement"). The Amendment provided commitments for an additional $105.0 million of term loans ("Additional Term Loan Commitments") which are subject to, among other customary conditions, the substantially concurrent consummation of the Company’s previously announced agreement to acquire (i) 70% of the outstanding limited partnership interests of SGA and (ii) 100% of the outstanding membership interests of SGIA, LLC, the general partner of SGA (the "Transaction"). The applicable margin on amounts outstanding under the Credit Agreement, commencing as of the Effective Date, is 2.50%, in the case of LIBOR-based loans, and 1.50% in the case of alternate base rate loans, in each case subject to a 25 basis point reduction based on the secured net leverage ratio (as defined in the Credit Agreement) of the Company as of the last day of the preceding fiscal quarter being not greater than 1.00 to 1.00, as reflected in certain financial reports required under the Credit Agreement. The Additional Term Loan Commitments are subject to a delayed draw fee accruing for the period (i) from the date which is 31 days after the Effective Date to the date which is 60 days after the Effective Date, at 1.25% per annum and (ii) thereafter, at 2.50% per annum until the earlier of the funding or termination of the Additional Term Loan Commitments, in each case, calculated in respect of the aggregate amount of the Additional Term Commitments during such period. The Amendment also eliminated a maximum Total Net Leverage Ratio (as defined in the Credit Agreement) financial maintenance covenant as applied to term loans under the Credit Agreement. The Credit Agreement includes, for the benefit of revolving lenders, a financial maintenance covenant that the Company will not permit the Total Net Leverage Ratio to exceed 2.50:1.00 as of the last day of any fiscal quarter; provided that this covenant will apply only if on such day the aggregate principal amount of outstanding revolving loans and letters of credit exceeds 30% of the aggregate revolving commitments as of such day. At March 31, 2018, $258.7 million was outstanding under the Term Loan, and no amounts were outstanding under our $100 million revolving credit facility.

Debt

Credit Agreement

On February 15, 2018 (the "Effective Date") the Company entered into Amendment No. 1 (the "Amendment") to the Credit Agreement, dated as of June 1, 2017, (the Credit Agreement as amended by the Amendment is hereinafter referred to as the "Credit Agreement"). The Amendment provided commitments for an additional $105.0 million of term loans ("Additional Term Loan Commitments") which are subject to, among other customary conditions, the substantially concurrent consummation of the Company’s previously announced agreement to acquire (i) 70% of the outstanding limited partnership interests of SGA and (ii) 100% of the outstanding membership interests of SGIA, LLC, the general partner of SGA (the "Transaction").

The applicable margin on amounts outstanding under the Credit Agreement, commencing as of the Effective Date, is 2.50%, in the case of LIBOR-based loans, and 1.50% in the case of alternate base rate loans, in each case subject to a 25 basis point reduction based on the secured net leverage ratio (as defined in the Credit Agreement) of the Company as of the last day of the preceding fiscal quarter being not greater than 1.00 to 1.00, as reflected in certain financial reports required under the Credit Agreement. The Additional Term Loan Commitments are subject to a delayed draw fee accruing for the period (i) from the date which is 31 days after the Effective Date to the date which is 60 days after the Effective Date, at 1.25% per annum and (ii) thereafter, at 2.50% per annum until the earlier of the funding or termination of the Additional Term Loan Commitments, in each case, calculated in respect of the aggregate amount of the Additional Term Commitments during such period.

The Amendment also eliminated a maximum Total Net Leverage Ratio (as defined in the Credit Agreement) financial maintenance covenant as applied to term loans under the Credit Agreement. The Credit Agreement includes, for the benefit of revolving lenders, a financial maintenance covenant that the Company will not permit the Total Net Leverage Ratio to exceed 2.50:1.00 as of the last day of any fiscal quarter; provided that this covenant will apply only if on such day the aggregate principal amount of outstanding revolving loans and letters of credit exceeds 30% of the aggregate revolving commitments as of such day.

At March 31, 2018, $258.7 million was outstanding under the Term Loan, and no amounts were outstanding under our $100 million revolving credit facility.