Long Term Debt

Long-term debt consists of the following at December 31:



	2017		2016
Revolving line of credit	$	327,000	$	329,000
Term loan, net of deferred debt issuance costs of $467 and $622 in 2017 and 2016, respectively	157,033		165,628
Mortgage notes	2,410		3,862
Total debt	486,443		498,490
Less: Current portion	14,699		10,202
Total long-term debt	$	471,744	$	488,288

On January 4, 2016, we entered into a fifth amended and restated senior credit agreement consisting of: (a) a $175.0 million term loan facility and (b) a $525.0 million revolving credit facility both expiring on January 4, 2021. The term loan is payable in quarterly installments increasing over the term of the facility. Proceeds from the term loan facility and borrowings under the revolving credit facility were used to repay the then existing senior credit agreement and to finance the acquisition of SurgiQuest. Interest rates are at LIBOR plus 2.00% (3.57% at December 31, 2017). For those borrowings where we elect to use the alternative base rate, the base rate will be the greater of the Prime Rate, the Federal Funds Rate plus 0.50% or the one-month Eurocurrency Rate Plus 1.00%.

In conjunction with this agreement, we incurred charges included in other expense in the 2016 statement of comprehensive income related to commitment fees paid to certain of our lenders, which provided a financing commitment for the SurgiQuest acquisition totaling $2.7 million and recorded a loss on the early extinguishment of debt of $0.3 million.

There were $157.5 million in borrowings outstanding on the term loan as of December 31, 2017. There were $327.0 million in borrowings outstanding under the revolving credit facility as of December 31, 2017. Our available borrowings on the revolving credit facility at December 31, 2017 were $194.9 million with approximately $3.1 million of the facility set aside for outstanding letters of credit.

The fifth amended and restated senior credit agreement is collateralized by substantially all of our personal property and assets. The fifth amended and restated senior credit agreement contains covenants and restrictions which, among other things, require the maintenance of certain financial ratios and restrict dividend payments and the incurrence of certain indebtedness and other activities, including acquisitions and dispositions. We were in full compliance with these covenants and restrictions as of December 31, 2017. We are also required, under certain circumstances, to make mandatory prepayments from net cash proceeds from any issuance of equity and asset sales.

We have a mortgage note outstanding in connection with the Largo, Florida property and facilities bearing interest at 8.25% per annum with semiannual payments of principal and interest through June 2019. The principal balance outstanding on the mortgage note aggregated $2.4 million at December 31, 2017. The mortgage note is collateralized by the Largo, Florida property and facilities.

The scheduled maturities of long-term debt outstanding at December 31, 2017 are as follows:



2018	$	14,699
2019	18,336
2020	17,500
2021	436,375
2022	—
Thereafter	—