6.	Long-Term Debt and Short-Term Borrowings

Long-Term Debt

Long-term debt consists of the following (dollars in thousands):

	March 31,			December 31,
	2017			2016
Senior term loans, with interest ranging from 1.77% to 2.38%, due quarterly through 2022	$	751,875		$	751,875
5.00% senior notes due in 2023		800,000			800,000
4.875% senior notes due in 2026, net of unamortized discount		596,001			595,912
5.25% senior notes due in 2025, net of unamortized premium		426,454			426,500
Other		14			14
Total long-term debt		2,574,344			2,574,301
Less: current maturities of long-term debt		(12	)		(11	)
Less: unamortized debt issuance costs		(25,074	)		(26,164	)
Total long-term debt, net of current maturities	$	2,549,258		$	2,548,126

On January 9, 2015, CBRE Services, Inc. (CBRE Services), our wholly-owned subsidiary, entered into an amended and restated credit agreement (2015 Credit Agreement) with a syndicate of banks jointly led by Merrill Lynch, Pierce, Fenner & Smith Incorporated, J.P. Morgan Securities LLC and Credit Suisse AG. On March 21, 2016, CBRE Services executed an amendment to the 2015 Credit Agreement that, among other things, extended the maturity on the revolving credit facility to March 2021 and increased the borrowing capacity under the revolving credit facility by $200.0 million.

Our 2015 Credit Agreement is an unsecured credit facility that is jointly and severally guaranteed by us and substantially all of our material domestic subsidiaries. As of March 31, 2017, the 2015 Credit Agreement provided for the following: (1) a $2.8 billion revolving credit facility, which includes the capacity to obtain letters of credit and swingline loans and matures on March 21, 2021; (2) a $500.0 million tranche A term loan facility requiring quarterly principal payments, which began on June 30, 2015 and continue through maturity on January 9, 2020; (3) a $270.0 million tranche B-1 term loan facility requiring quarterly principal payments, which began on December 31, 2015 and continue through maturity on September 3, 2020; and (4) a $130.0 million tranche B-2 term loan facility requiring quarterly principal payments, which began on December 31, 2015 and continue through maturity on September 3, 2022.

Our 2015 Credit Agreement contains restrictive covenants that, among other things, limit our ability to incur additional indebtedness, pay dividends or make distributions to stockholders, repurchase capital stock or debt, make investments, sell assets or subsidiary stock, create or permit liens on assets, engage in transactions with affiliates, enter into sale/leaseback transactions, issue subsidiary equity and enter into consolidations or mergers. Our 2015 Credit Agreement also requires us to maintain a minimum coverage ratio of EBITDA (as defined in the 2015 Credit Agreement) to total interest expense of 2.00x and a maximum leverage ratio of total debt less available cash to EBITDA (as defined in the 2015 Credit Agreement) of 4.25x as of the end of each fiscal quarter. On this basis, our coverage ratio of EBITDA to total interest expense was 13.08x for the trailing twelve months ended March 31, 2017, and our leverage ratio of total debt less available cash to EBITDA was 1.35x as of March 31, 2017.

The indentures governing our 5.00% senior notes, 4.875% senior notes and 5.25% senior notes contain restrictive covenants that, among other things, limit our ability to create or permit liens on assets securing indebtedness, entering into sale/leaseback transactions and entering into consolidations or mergers.

Short-Term Borrowings

Revolving Credit Facility

As of March 31, 2017, we had $120.0 million of revolving credit facility principal outstanding under our 2015 Credit Agreement with a weighted average annual interest rate of 4.0% and which was included in short-term borrowings in the accompanying consolidated balance sheets. As of March 31, 2017, letters of credit totaling $2.0 million were outstanding under our revolving credit facility. These letters of credit, which reduce the amount we may borrow under our revolving credit facility, were primarily issued in the ordinary course of business. As of December 31, 2016, no amounts were outstanding under our revolving credit facility other than letters of credit totaling $2.0 million.

Warehouse Lines of Credit

CBRE Capital Markets has warehouse lines of credit with third-party lenders for the purpose of funding mortgage loans that will be resold, and a funding arrangement with Federal National Mortgage Association (Fannie Mae) for the purpose of selling a percentage of certain closed multifamily loans to Fannie Mae. These warehouse lines are recourse only to CBRE Capital Markets and are secured by our related warehouse receivables.

During the three months ended March 31, 2017, we had a maximum of $1.3 billion of warehouse lines of credit principal outstanding. As of March 31, 2017 and December 31, 2016, we had $671.5 million and $1.3 billion, respectively, of warehouse lines of credit principal outstanding, which are included in short-term borrowings in the accompanying consolidated balance sheets. Additionally, we had $685.1 million and $1.3 billion of mortgage loans held for sale (warehouse receivables) as of March 31, 2017 and December 31, 2016, respectively, included in the accompanying consolidated balance sheets, which substantially represented mortgage loans funded through the lines of credit that were either under commitment to be purchased by Federal Home Loan Mortgage Corporation (Freddie Mac) or had confirmed forward trade commitments for the issuance and purchase of Fannie Mae or Government National Mortgage Association (Ginnie Mae) mortgage backed securities that will be secured by the underlying loans.