Line of Credit	3 Months Ended
Jun. 30, 2018
Debt Disclosure [Abstract]
Line of Credit	Note 8 — Line of Credit In September 2017, the Company renewed its line of credit agreement with a financial institution, which provides a revolving credit facility with borrowing capacity of up to $10 million. Borrowings under the credit agreement, as amended, bear interest, at the Company’s option, at a fixed LIBOR-based rate plus 1.00% or at a fluctuating rate determined by the financial institution to be 1.00% above the daily one-month LIBOR rate. The loan covenants require the Company to (i) maintain a current assets to liabilities ratio of at least 1.25:1, (ii) maintain a current debt to tangible net worth ratio of not greater than 1.25:1 and (iii) have positive net income. The Company is in compliance with all these covenants. There were no outstanding revolving loans as of June 30, 2018, but letters of credit in the aggregate amount of $4.5 million have been issued separately from the line of credit, and therefore do not reduce the amount of borrowings available under the revolving credit facility. The renewed credit agreement expires in September 2018. The Company expects to renew the line of credit for another year.

Line of Credit

3 Months Ended

Jun. 30, 2018

Note 8 — Line of Credit

In September 2017, the Company renewed its line of credit agreement with a financial institution, which provides a revolving credit facility with borrowing capacity of up to $10 million. Borrowings under the credit agreement, as amended, bear interest, at the Company’s option, at a fixed LIBOR-based rate plus 1.00% or at a fluctuating rate determined by the financial institution to be 1.00% above the daily one-month LIBOR rate. The loan covenants require the Company to (i) maintain a current assets to liabilities ratio of at least 1.25:1, (ii) maintain a current debt to tangible net worth ratio of not greater than 1.25:1 and (iii) have positive net income. The Company is in compliance with all these covenants. There were no outstanding revolving loans as of June 30, 2018, but letters of credit in the aggregate amount of $4.5 million have been issued separately from the line of credit, and therefore do not reduce the amount of borrowings available under the revolving credit facility. The renewed credit agreement expires in September 2018. The Company expects to renew the line of credit for another year.