Fair Value Measurements	6 Months Ended
Fair Value Measurements	Jun. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	8. Fair Value Measurements As of June 30, 2016, the Company did not have any financial assets or liabilities measured at fair value on a recurring basis. As of December 31, 2015, the carrying value of derivative liabilities, which are measured at fair value on a recurring basis, was $40 thousand. Its fair value measurement was based on Level 2 inputs. As of June 30, 2016, the Company did not have any assets or liabilities measured at fair value on a recurring basis other than cash and cash equivalents and restricted cash, fair value of which approximate carrying values due to the short-term nature of these instruments. The fair value of assets and liabilities whose carrying value approximates fair value is determined using Level 2 inputs, with the exception of cash (Level 1). As of June 30, 2016, the total carrying value and estimated fair value of the Company’s 6.625% Senior Notes due July 15, 2021 (the “2021 Notes”), which are not measured at fair value on a recurring basis, were $220,722 thousand and $173,266 thousand, respectively. As of December 31, 2015, the total carrying value and estimated fair value of the 2021 Notes were $220,375 thousand and $157,500 thousand, respectively. The estimated fair values are based on Level 2 inputs.

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.