Debt

Long-term debt was comprised of the following:



	As of December 31
	2017			2016
Total credit facility	$	300,000		$	300,000
Balance outstanding	$	76,300		$	89,100
Standby letters of credit	$	2,065		$	2,165
Amount available	$	221,635		$	208,735
Weighted-average interest rate	2.30		%	1.90		%
Commitment fee percentage per annum	0.25		%	0.25		%

The revolving credit facility requires, among other things, that we comply with a maximum total leverage ratio and a minimum fixed charge coverage ratio. Failure to comply with these covenants could reduce the borrowing availability under the revolving credit facility. We were in compliance with all debt covenants as of December 31, 2017. The revolving credit facility requires us to deliver quarterly financial statements, annual financial statements, auditors certifications and compliance certificates within a specified number of days after the end of a quarter and year. Additionally, the revolving credit facility contains restrictions limiting our ability to dispose of assets; incur certain additional debt; repay other debt or amend subordinated debt instruments; create liens on assets; make investments, loans or advances; make acquisitions or engage in mergers or consolidations; engage in certain transactions with our subsidiaries and affiliates; and make stock repurchases and dividend payments. Interest rates on the revolving credit facility fluctuate based upon the London Interbank Offered Rate and the Company's quarterly total leverage ratio. We pay a commitment fee on the undrawn portion of the revolving credit facility. The commitment fee varies based on the quarterly leverage ratio.

We have debt issuance costs related to our long-term debt that are being amortized using the straight-line method over the life of the debt. Amortization expense was approximately $185 in 2017, $163 in 2016, and $175 in 2015, and was recognized as interest expense.

We use interest rate swaps to convert the revolving credit facility's variable rate of interest into a fixed rate on a portion of the debt as described more fully in Note 12. These swaps are treated as cash flow hedges and consequently, the changes in fair value were recorded in other comprehensive earnings.

Interest rate swaps activity recorded in other comprehensive earnings before tax included the following:



	Years Ended December 31,
	2017			2016		2015
Unrealized (loss) gain	$	(255	)	$	593	$	(516	)
Realized gain reclassified to interest expense	$	37		$	928	$	768