DEBT

A summary of long-term debt is as follows:



(In thousands)	March 31, 2017			September 30, 2016
6.5% Senior Notes due 2020 ("Senior Notes") aggregate principal amount	$	448,650		$	448,650
Senior Notes unamortized premium	2,797			3,245
Senior Notes unamortized debt issuance costs	(3,380		)	(3,976		)
Total Senior Notes	448,067			447,919
Revolving Credit Facility ("Credit Facility")	850,000			780,000
Total long-term debt	$	1,298,067		$	1,227,919

Revolving Credit Facility

As of March 31, 2017, our Credit Facility had $1.395 billion of total commitments and $850 million of outstanding borrowings. As of March 31, 2017, we had approximately $545 million available for borrowings under the Credit Facility. Approximately $275 million of the commitments under the Credit Facility mature in May 2018 with the remaining $1.12 billion of the commitments maturing in May 2019. We were in compliance with all financial covenants under the Credit Facility as of March 31, 2017 and September 30, 2016, and we anticipate that we will continue to be in compliance for at least twelve months subsequent to the date our financial statements are issued.

The weighted-average effective interest rate on our long-term debt was approximately 5.0% per annum as of March 31, 2017. The effective rate was determined after giving consideration to the effect of our interest rate swaps accounted for as hedges and the amortization of our debt issuance costs and debt premiums. Interest capitalized for the three and six months ended March 31, 2017 was approximately $6.5 million and $12.0 million, respectively. Interest capitalized for the three and six months ended March 31, 2016 was approximately $3.8 million and $8.4 million, respectively.