Line of Credit	12 Months Ended
Mar. 31, 2019
Debt Disclosure [Abstract]
Line of Credit	9. Line of Credit On March 29, 2018, we entered into a $300,000 amended and restated revolving credit agreement (the “Credit Agreement”) with JPMorgan Chase Bank, N.A., as administrative agent, U.S. Bank National Association, as syndication agent, and certain other agents and lenders. The Credit Agreement replaces our prior $250,000 revolving credit agreement originally entered into on January 4, 2016 (“Original Credit Agreement”). The Credit Agreement provides a subfacility of up to $10,000 for letters of credit and a subfacility of up to $10,000 for swing-line loans and also includes a $100,000 accordion feature that provides us with the ability to obtain up to $400,000 in the aggregate of revolving credit commitments and/or term loans upon satisfaction of certain conditions. The Credit Agreement matures on March 29, 2023 and the full balance of the revolving loans and all other obligations under the agreement must be paid at that time. In addition, we are required to prepay the revolving loan balance if at any time the aggregate principal amount outstanding under the Credit Agreement exceeds the aggregate commitments thereunder. The Credit Agreement is secured by substantially all of our existing and future property. The revolving loans under the Credit Agreement will be available for letters of credit, permitted acquisitions, working capital and general corporate purposes. The revolving loans under the Credit Agreement bear interest at our option of either, (a) for base rate loans, a base rate based on the highest of (i) 0%, (ii) the rate of interest publicly announced by the administrative agent as its prime rate in effect at its principal office in New York City, (iii) the overnight bank funding rate (not to be less than zero) as determined by the Federal Reserve Bank of New York plus 0.50% or (iv) the LIBOR-based rate for one, two, three or six months Eurodollar deposits plus 1%, and (b) for Eurodollar loans, the LIBOR-based rate for one, two, three or six months (as selected by us) Eurodollar deposits plus 1.00%, plus, in each case, an applicable margin based on our total leverage ratio from time to time, ranging from 0.50% to 1.50% for base rate loans, and from 1.50% to 2.50% for Eurodollar loans. We will also pay a commitment fee of between 0.25% and 0.45%, payable quarterly in arrears, on the average daily unused amount of the revolving facility based on our total leverage ratio from time to time. The revolving loans under the Credit Agreement are subject to customary representations, warranties and ongoing affirmative and negative covenants and agreements. The negative covenants include, among other things, limitations on indebtedness, liens, asset sales, mergers and acquisitions, investments, transactions with affiliates, dividends and other restricted payments, subordinated indebtedness and amendments to subordinated indebtedness documents and sale and leaseback transactions. The Credit Agreement also requires us to maintain (1) a maximum net leverage ratio of 3.00 to 1.00 and (2) a minimum fixed charge coverage ratio of 3.00 to 1.00 at the end of each fiscal quarter through the term of the loan. We were in compliance with all financial and non-financial covenants under the Credit Agreement as of March 31, 2019. As of March 31, 2019, we had $11,000 in outstanding loans and $289,000 of unused credit under the Credit Agreement. As of March 31, 2018, we had $37,000 in outstanding loans and $263,000 of unused credit under the Original Credit Agreement. The interest rates as of March 31, 2019 and 2018 was approximately 4.0% and 3.1%, respectively. During the years ended March 31, 2019, 2018, and 2017 we recorded $2,055, $1,812, and $1,899 of interest expense (excluding amortization of deferred debt issuance costs), respectively, and the weighted average interest rates were approximately 3.7%, 2.8%, and 2.4% respectively. As of March 31, 2019, total unamortized debt issuance costs were $2,834. Costs incurred in connection with securing the Credit Agreement, including fees paid to legal advisors and third parties, are deferred and amortized to interest expense over the term of the Credit Agreement. Deferred debt issuance costs are reported as a component of other assets on the consolidated balance sheets. As of March 31, 2018, total unamortized debt issuance costs were $3,549, which included $1,105 of additional costs related to the Credit Agreement, and net of $536 unamortized debt issuance costs that were written off in connection with amending the Original Credit Agreement. During the years ended March 31, 2019, 2018, and 2017, we recorded $710, $1,610, and $1,076, respectively, in amortization of deferred debt issuance costs.

Line of Credit

12 Months Ended

Mar. 31, 2019

9. Line of Credit

On March 29, 2018, we entered into a $300,000 amended and restated revolving credit agreement (the “Credit Agreement”) with JPMorgan Chase Bank, N.A., as administrative agent, U.S. Bank National Association, as syndication agent, and certain other agents and lenders. The Credit Agreement replaces our prior $250,000 revolving credit agreement originally entered into on January 4, 2016 (“Original Credit Agreement”). The Credit Agreement provides a subfacility of up to $10,000 for letters of credit and a subfacility of up to $10,000 for swing-line loans and also includes a $100,000 accordion feature that provides us with the ability to obtain up to $400,000 in the aggregate of revolving credit commitments and/or term loans upon satisfaction of certain conditions.

The Credit Agreement matures on March 29, 2023 and the full balance of the revolving loans and all other obligations under the agreement must be paid at that time. In addition, we are required to prepay the revolving loan balance if at any time the aggregate principal amount outstanding under the Credit Agreement exceeds the aggregate commitments thereunder. The Credit Agreement is secured by substantially all of our existing and future property. The revolving loans under the Credit Agreement will be available for letters of credit, permitted acquisitions, working capital and general corporate purposes.

The revolving loans under the Credit Agreement bear interest at our option of either, (a) for base rate loans, a base rate based on the highest of (i) 0%, (ii) the rate of interest publicly announced by the administrative agent as its prime rate in effect at its principal office in New York City, (iii) the overnight bank funding rate (not to be less than zero) as determined by the Federal Reserve Bank of New York plus 0.50% or (iv) the LIBOR-based rate for one, two, three or six months Eurodollar deposits plus 1%, and (b) for Eurodollar loans, the LIBOR-based rate for one, two, three or six months (as selected by us) Eurodollar deposits plus 1.00%, plus, in each case, an applicable margin based on our total leverage ratio from time to time, ranging from 0.50% to 1.50% for base rate loans, and from 1.50% to 2.50% for Eurodollar loans. We will also pay a commitment fee of between 0.25% and 0.45%, payable quarterly in arrears, on the average daily unused amount of the revolving facility based on our total leverage ratio from time to time.

The revolving loans under the Credit Agreement are subject to customary representations, warranties and ongoing affirmative and negative covenants and agreements. The negative covenants include, among other things, limitations on indebtedness, liens, asset sales, mergers and acquisitions, investments, transactions with affiliates, dividends and other restricted payments, subordinated indebtedness and amendments to subordinated indebtedness documents and sale and leaseback transactions. The Credit Agreement also requires us to maintain (1) a maximum net leverage ratio of 3.00 to 1.00 and (2) a minimum fixed charge coverage ratio of 3.00 to 1.00 at the end of each fiscal quarter through the term of the loan. We were in compliance with all financial and non-financial covenants under the Credit Agreement as of March 31, 2019.

As of March 31, 2019, we had $11,000 in outstanding loans and $289,000 of unused credit under the Credit Agreement. As of March 31, 2018, we had $37,000 in outstanding loans and $263,000 of unused credit under the Original Credit Agreement. The interest rates as of March 31, 2019 and 2018 was approximately 4.0% and 3.1%, respectively.

During the years ended March 31, 2019, 2018, and 2017 we recorded $2,055, $1,812, and $1,899 of interest expense (excluding amortization of deferred debt issuance costs), respectively, and the weighted average interest rates were approximately 3.7%, 2.8%, and 2.4% respectively.

As of March 31, 2019, total unamortized debt issuance costs were $2,834. Costs incurred in connection with securing the Credit Agreement, including fees paid to legal advisors and third parties, are deferred and amortized to interest expense over the term of the Credit Agreement. Deferred debt issuance costs are reported as a component of other assets on the consolidated balance sheets. As of March 31, 2018, total unamortized debt issuance costs were $3,549, which included $1,105 of additional costs related to the Credit Agreement, and net of $536 unamortized debt issuance costs that were written off in connection with amending the Original Credit Agreement. During the years ended March 31, 2019, 2018, and 2017, we recorded $710, $1,610, and $1,076, respectively, in amortization of deferred debt issuance costs.