Long-term debt

Our long-term debt is summarized below (in thousands):



	Mar. 31, 2018			Dec. 31, 2017

Unsecured floating rate term loan due quarterly through August 2018	$	12,600		$	20,500
VIE unsecured floating rate term loans due quarterly through December 2018	485			646
Unsecured floating rate term loan due quarterly through June 2020	90,000			100,000
Unsecured floating rate term loan due quarterly through September 2020	210,000			225,000
Borrowings under revolving credit agreement expiring June 2020	220,000			—
Unsecured notes bearing fixed rate interest at 5.125% due October 2019	320,000			320,000
Unsecured notes bearing fixed rate interest at 5.125% due July 2020	600,000			600,000
Unsecured notes bearing fixed rate interest at 4.875% due September 2021	350,000			350,000
Unsecured notes bearing fixed rate interest at 6.375% due October 2023	650,000			650,000
Unsecured notes bearing fixed rate interest at 5.50% due September 2024	325,000			325,000
Unsecured notes bearing fixed rate interest at 7.75% due June 2027	200,000			200,000
Unsecured notes bearing fixed rate interest at 7.25% due September 2027	240,000			240,000
Total principal long-term debt	3,218,085			3,031,146
Debt issuance costs	(19,315		)	(20,551		)
Other (fair market value adjustments and discounts)	(2,215		)	(2,902		)
Total long-term debt	3,196,555			3,007,693
Less current portion of long-term debt maturities	485			646
Long-term debt, net of current portion	$	3,196,070		$	3,007,047

On August 1, 2017, we amended our Amended and Restated Competitive Advance and Revolving Credit Agreement. Under the amended terms, our maximum total leverage ratio will remain at 5.0x through June 30, 2018, after which, as amended, it will be reduced to 4.75x through June 2019 and then to 4.5x until the expiration date of the credit agreement on June 29, 2020.

During the first quarter of 2018, we borrowed $220.0 million under the revolving credit facility primarily to finance the acquisition of assets in San Diego consisting of KFMB-TV, the CBS affiliate, KFMB-D2 (the CW station), and radio stations KFMB-AM and KFMB-FM. As of March 31, 2018, we had unused borrowing capacity of $1.27 billion under our revolving credit facility.