Fair Value of Financial Instruments	12 Months Ended
Fair Value of Financial Instruments	Dec. 31, 2017
Fair Value of Financial Instruments [Abstract]
Fair Value of Financial Instruments	15. Fair Value of Financial Instruments ASC Topic 825 requires disclosure of fair value information about financial instruments, whether or not recognized in the consolidated balance sheets, for which it is practicable to estimate that value. In cases where quoted market prices are not available, fair values are based upon the application of discount rates to estimated future cash flows based upon market yields or by using other valuation methodologies. Considerable judgment is necessary to interpret market data and develop estimated fair value. Accordingly, fair values are not necessarily indicative of the amounts the Company could realize on disposition of the financial instruments. The use of different market assumptions and/or estimation methodologies may have a material effect on estimated fair value amounts. Short-term instruments: The carrying amounts of cash and cash equivalents and restricted cash approximate fair value. Interest rate swaps: The effective portion of changes in the fair value of the Company’s interest rate swaps, which are derivatives designated and that qualify as cash flow hedges, is recorded in accumulated other comprehensive income or loss on the consolidated balance sheets and statement of comprehensive income and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. There was no ineffectiveness recognized for the year ended December 31, 2017, therefore the entire $1.4 million unrealized gain for the year ended December 31, 2017 related to the interest rate swaps was recorded in accumulated other comprehensive income. No amounts were recorded in other comprehensive income or loss on the consolidated financial statements as of and for the years ended December 31, 2016 and 2015. The $1.4 million interest rate swap asset as of December 31, 2017 is recorded within the condensed consolidated balance sheet within the ‘Other Assets, Net’ line item. The Company valued its interest rate swaps utilizing Level 2 and Level 3 inputs. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability, which are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The majority of the inputs used to determine the fair value of the interest rate swaps fall within Level 2 of the fair value hierarchy while certain credit valuation adjustments to the fair value utilize Level 3 inputs such as estimates of current credit spreads to evaluate the likelihood of default by the Company and its counterparties. However, as of December 31, 2017, the Company assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. The Company does not have any fair value measurements on a recurring basis using significant unobservable inputs (Level 3) as of December 31, 2017 or December 31, 2016. Credit facility and Senior Notes: The Company’s unsecured credit facility did not have interest rates which were materially different than current market conditions and therefore, the fair value approximated the carrying value. The fair value of the Company’s Senior Notes was estimated using Level 2 “significant other observable inputs,” primarily based on quoted market prices for the same or similar issuances. At December 31, 2017, the fair value of the Senior Notes was approximately $404.0 million. Other debt instruments: The fair value of the Company’s other debt instruments (including capital leases, lease financing obligations and mortgage notes payable) were estimated in the same manner as the unsecured credit facility above. Similarly, each of these instruments did not have interest rates which were materially different than current market conditions and therefore, the fair value of each instrument approximated the respective carrying values.

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.