Fair Value of Financial Instruments	12 Months Ended
Dec. 31, 2019
Fair Value of Financial Instruments [Abstract]
Fair Value of Financial Instruments	4. Fair Value of Financial Instruments Assets and Liabilities Measured at Fair Value on a Recurring Basis The carrying value of our cash and cash equivalents, accounts receivable and accounts payable approximate fair value because of their short-term nature. Our investments consist of U.S. treasury notes with maturities of up to one year. Fair value of investments is measured using Level 1 inputs. We designate the appropriate classification of our investments at the time of purchase based upon the intended holding period. Investments, all of which are classified as held-to-maturity (“HTM”), are carried at amortized cost and approximated fair value as of December 31, 2019. We recognize impairment charges when management believes the decline in the fair value of the investment below the carrying value is other-than-temporary. No impairment charges were recognized on our investments for the twelve months ended December 31, 2019 and 2018. We have elected to fund certain deferred compensation obligations through a rabbi trust, the assets of which are designated as trading securities, as described further in Note 10. “Employee Benefit Plans.” Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Assets recognized or disclosed at fair value on the consolidated financial statements on a nonrecurring basis include items such as leasehold improvements, property and equipment, operating lease assets, goodwill, and other intangible assets. These assets are measured at fair value if determined to be impaired. Other than as disclosed in Note 5. “Corporate Restructuring Costs”, Note 6. “Restaurant Closure Costs” and Note 11. “Leases” as of December 31, 2019 and 2018, we had no material non-financial assets or liabilities that were measured using Level 3 inputs.

Fair Value of Financial Instruments

12 Months Ended

Dec. 31, 2019

Fair Value of Financial Instruments [Abstract]

4. Fair Value of Financial Instruments

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The carrying value of our cash and cash equivalents, accounts receivable and accounts payable approximate fair value because of their short-term nature.

Our investments consist of U.S. treasury notes with maturities of up to one year. Fair value of investments is measured using Level 1 inputs. We designate the appropriate classification of our investments at the time of purchase based upon the intended holding period.

Investments, all of which are classified as held-to-maturity (“HTM”), are carried at amortized cost and approximated fair value as of December 31, 2019. We recognize impairment charges when management believes the decline in the fair value of the investment below the carrying value is other-than-temporary. No impairment charges were recognized on our investments for the twelve months ended December 31, 2019 and 2018.

We have elected to fund certain deferred compensation obligations through a rabbi trust, the assets of which are designated as trading securities, as described further in Note 10. “Employee Benefit Plans.”

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

Assets recognized or disclosed at fair value on the consolidated financial statements on a nonrecurring basis include items such as leasehold improvements, property and equipment, operating lease assets, goodwill, and other intangible assets. These assets are measured at fair value if determined to be impaired.

Other than as disclosed in Note 5. “Corporate Restructuring Costs”, Note 6. “Restaurant Closure Costs” and Note 11. “Leases” as of December 31, 2019 and 2018, we had no material non-financial assets or liabilities that were measured using Level 3 inputs.