Long-term Debt - Schedule of Actual Ratios and Required Ratios Under Financial Covenants (Details) - Lenders named therein and Bank of America Merrill Lynch - Senior Credit Facility	3 Months Ended
	Mar. 31, 2017
Minimum
Debt Instrument [Line Items]
Interest coverage ratio, as defined under the Senior Credit Facility	11.08
Leverage ratio, as defined under the Senior Credit Facility	2.39
Maximum
Debt Instrument [Line Items]
Interest coverage ratio, as defined under the Senior Credit Facility	1
Leverage ratio, as defined under the Senior Credit Facility	1