			December 31, 2018			December 31, 2017
	Issuance date	Maturity date	Amount (in thousands)		Effective Interest Rate	Amount (in thousands)		Effective Interest Rate
Revolving credit facilities, as modified	February 2013	April 2022	$	—	n/a	$	25,000	5.36% - 5.46%
2018 Refinancing Facility Agreement	October 2018	October 2025		219,450	6.00% - 6.10%		—	n/a
2017 Refinancing Facility Agreement	April 2017	April 2024		—	n/a		298,500	5.66% - 5.84%
Total debt			$	219,450		$	323,500
Less: Unamortized issuance discount and issuance costs, net				2,035			5,179
Less: Current portion of debt, net				1,900			2,032
Long term debt, net			$	215,515		$	316,289

In February 2013, the Company entered into a Credit Agreement (“2013 Credit Facility”) which was subsequently amended at various dates primarily to revise certain financial covenants and ratios, permit certain transactions, increase the facility, or extend the maturity date. As modified, the 2013 Credit Facility comprised a $315.0 million term loan and $75.0 million revolving credit facility.

In April 2017, the Company entered into a Refinancing Facility Agreement (“2017 Credit Facility”), comprising a $300.0 million term loan and $75.0 million revolving credit facility. Upon execution of the 2017 Credit Agreement, the term loan under the 2013 Credit Facility was modified and partially extinguished and the Company recognized a $0.2 million loss on debt extinguishment during the year ended December 31, 2017.

In October 2018, the Company entered into a Refinancing Facility Agreement (“2018 Credit Facility”), comprising a $220.0 million term loan (the Term Loan”) and $75.0 million revolving credit facility. Upon execution of the 2018 Credit Facility, the Company utilized a portion of its IPO proceeds to repay $101.3 million of debt outstanding under the 2017 Credit Facility and the Company recognized a $0.9 million loss on debt modification. Loans under the 2018 Credit Facility accrue interest based upon, at the Company’s option, either at an alternate base interest rate (“ABR”) or a Eurocurrency rate, in each case plus an applicable margin. The applicable margin for the Term Loan is 2.75% in the case of a ABR loan and 3.75% in the case of a Eurocurrency loan, and the applicable margin for the revolving loan ranges from 0.75% to 1.50% in the case of a ABR loan and 1.75 to 2.50% in the case of a Eurocurrency loan, and is based on the Company’s leverage ratio. The Company will make quarterly principal payments of $550,000 on the Term Loans with any remaining principal amounts due on October 10, 2025. The principal amount on the revolving credit facility is due and all revolver commitments terminate on October 10, 2023.

The Company records debt discounts and issuance costs as a reduction to the associated current and long-term portions of the debt in the consolidated balance sheets. The Company records debt discounts and issuance costs as a deferred asset when there is no associated debt liability. As of December 31, 2018, unamortized issuance discount and issuance costs of $0.4 million were included in prepaid expenses and other current assets and $1.4 million were included in other assets. The Company amortizes these costs using the straight-line method which approximates the effective interest rate method over the life of the loan. The amounts amortized are included in interest expense in the accompanying consolidated statements of operations.

As of December 31, 2018, the Company has $67.2 million of borrowing available under the line of credit portion of the 2018 Credit Facility.

The Company’s obligations under the 2018 Credit Facility are guaranteed by certain of its subsidiaries and secured by liens on substantially all of the assets of the Company and such subsidiaries. The 2018 Credit Facility contains financial, affirmative and negative covenants that, if violated, may require the Company to pay down the loans earlier than the stated maturity dates with higher interest rates. As of December 31, 2018, the Company was compliant with all of its debt covenant requirements in the 2018 Credit Facility. The Company believes that it will continue to comply with the terms of the loan agreements through the stated maturity dates. However, if the Company’s projections do not materialize, the Company may require additional equity or debt financing. There can be no assurance that additional financing, if required, will be available on terms satisfactory to the Company.

Principal and interest payments are due quarterly. As of December 31, 2018, future minimum payment obligations of principal amounts due by year under the 2018 Credit Facility were as follows (in thousands):

2019	$	2,200
2020		2,200
2021		2,200
2022		2,200
2023		2,200
Thereafter		208,450
Total principal outstanding	$	219,450