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Fair Value Measurements
6 Months Ended
Jun. 30, 2019
Fair Value Disclosures [Abstract]  
Fair Value Measurements
5. Fair Value Measurements
 
The Company uses the three-tier hierarchy of fair value measurement, which prioritizes the inputs used in measuring fair value based upon their degree of availability in external active markets. These tiers include: Level 1 (the highest priority), defined as observable inputs, such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3 (the lowest priority), defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.
 
As of June 30, 2019 and December 31, 2018, the Company determined that the carrying value of cash and cash equivalents approximated fair value based on Level 1 inputs. As of June 30, 2019, the fair values of the Company’s long-term debt and finance lease obligations were based on Level 2 inputs. As of December 31, 2018, the fair values of the Company’s long-term debt and capital lease obligations were based on Level 2 inputs. The Company’s long-term debt was based on variable and fixed interest rates at June 30, 2019 and December 31, 2018, for new issues with similar remaining maturities, and approximated carrying value. In addition, based on borrowing rates currently available to the Company for borrowings with similar terms, the carrying values of the Company's finance lease obligations also approximated fair value.