Note 5. Debt

Revolving Credit Facility We maintain a $350 million revolving credit facility to fund working capital and to finance acquisitions and other capital expenditures. The revolving credit facility matures on September 20, 2021. There were no amounts outstanding under the revolving credit facility as of December 31, 2016 and March 31, 2017. See Note 13. Subsequent Events for a discussion of amounts drawn on our revolving credit facility to fund the Advantage transaction. Unamortized debt issuance costs totaled $1.8 million and $1.7 million as of December 31, 2016 and March 31, 2017, respectively.

Borrowings under the revolving credit facility bear interest at a rate equal to an applicable margin plus, at our option, either (a) in the case of base rate borrowings, a rate equal to the highest of (1) the prime rate, (2) the greater of the federal funds rate or the overnight bank funding rate, plus 0.5% and (3) the LIBOR for an interest period of one month plus 1.00%; or (b) in the case of LIBOR borrowings, the offered rate per annum for deposits of dollars for the applicable interest period.

The unused portion of the revolving credit facility is subject to a commitment fee. Commitment fees began to accrue beginning on the date we entered into the revolving credit facility. As of December 31, 2016 and March 31, 2017, the commitment fee rate was 0.2%.

The revolving credit facility requires us to comply with the following financial covenants as of the end of each fiscal quarter:


•	a consolidated leverage ratio prior to the date that consolidated EBITDA for four fiscal quarters is less than $135 million, of less than or equal to 4.00 to 1.00 (except following certain acquisitions the consolidated leverage ratio shall be less than or equal to 4.50 to 1.00);


•	a consolidated leverage ratio on or after the date that consolidated EBITDA for four fiscal quarters exceeds $135 million, of less than or equal to 5.00 to 1.00 (except following certain acquisitions the consolidated leverage ratio shall be less than or equal to 5.50 to 1.00); and


•	a consolidated interest coverage ratio of not less than 3.00 to 1.00.

Certain lenders that are a party to the credit agreement have in the past performed, and may in the future from time to time perform, investment banking, financial advisory, lending or commercial banking services for us for which they have received, and may in the future receive, customary compensation and reimbursement of expenses.