(3) Fair Value Measurements

Fair value is the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value is a market-based measurement determined by assumptions that market participants would use in pricing an asset or liability. We categorize each of our fair value measurements in one of the following three levels based on the lowest level of input that is significant to the fair value measurement:

Level 1 — Observable inputs such as quoted prices in active markets for identical assets or liabilities;

Level 2 — Observable inputs, other than Level 1 inputs in active markets, that are observable either directly or indirectly; and

Level 3 — Unobservable inputs for which there is little or no market data, which require the reporting entity to develop its own assumptions.

At September 30, 2018 and December 31, 2017, we did not have any financial instruments required to be recorded at fair value on a recurring basis.

The carrying amounts of cash, cash equivalents, receivables, accounts payable and accrued liabilities approximate fair values based on their short-term nature. The fair values of our revolving credit facility and capital leases are estimated using discounted cash flow analyses, based on our current incremental borrowing rates for similar types of borrowing arrangements. Based on the borrowing rates currently available to us for bank loans with similar terms and average maturities, the fair value of our revolving credit facility debt and capital leases, which are measured using Level 2 inputs, at September 30, 2018 and December 31, 2017 approximated their respective book values.

The fair value of our $250.0 million aggregate principal amount of 5.875% senior notes due July 1, 2024 (the “Senior Notes” or “2024 Notes”) is based on their latest sales price at the end of each period obtained from a third-party institution and is Level 2 in the fair value hierarchy as there is not an active market for the Senior Notes. The Senior Notes are presented on the balance sheet net of deferred financing costs. The gross carrying value and the fair value of our Senior Notes are as follows:

	September 30, 2018		December 31, 2017
	(In thousands)
Carrying value	$	250,000	$	250,000
Fair value		253,200		262,500