13. SHORT-TERM BORROWING

At December 31, 2012 and 2011, we had $61.2 million and $34.7 million, respectively, of short-term borrowings outstanding. The annual weighted average interest rates on our short-term borrowings were 1.48 percent and 1.53 percent for 2012 and 2011, respectively. We incurred commitment fees of $73,000 and $85,000 in 2012 and 2011, respectively.

The outstanding short-term borrowings at December 31, 2012 were composed of $56.4 million in borrowings from bank lines of credit and $4.8 million in book overdrafts, which if presented, would be funded through the bank lines of credit. The outstanding short-term borrowings at December 31, 2011 included $30.5 million in borrowings from the bank lines of credit, and $4.2 million in book overdrafts.

As of December 31, 2012, we had five unsecured bank credit facilities with two financial institutions, totaling $140.0 million, none of which requires compensating balances. One of these facilities, for $40.0 million, is a revolving credit note maturing on October 31, 2013. These bank lines are available to provide funds for our short-term cash needs to meet seasonal working capital requirements and to temporarily fund portions of our capital expenditures. We maintain both committed and uncommitted credit facilities. Advances offered under the uncommitted lines of credit are subject to the discretion of the banks. We are currently authorized by our Board of Directors to borrow up to $100.0 million of short-term debt, as required, from these short-term lines of credit.

Committed Credit Facilities

As of December 31, 2012, we had two committed revolving credit facilities totaling $60.0 million. The first facility is an unsecured $30.0 million revolving line of credit that bears interest at the respective LIBOR rate, plus 1.25 percent per annum. At December 31, 2012, there was no borrowing capacity available under this credit facility.

The second facility is a $30.0 million committed revolving line of credit that bears interest at a base rate plus 1.25 percent, if requested and advanced on the same day, or LIBOR for the applicable period plus 1.25 percent if requested three days prior to the advance date. At December 31, 2012, there was $13.6 million available under this credit facility.

The availability of funds under our credit facilities is subject to conditions specified in the respective credit agreements, all of which we currently satisfy. These conditions include our compliance with financial covenants and the continued accuracy of representations and warranties contained in these agreements. We are required by the financial covenants in our revolving credit facilities to maintain, at the end of each fiscal year:

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a funded indebtedness ratio of no greater than 65 percent; and

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a fixed charge coverage ratio of at least 1.20 to 1.0.

We are in compliance with all of our debt covenants.

Uncommitted Credit Facilities

As of December 31, 2012, we had two uncommitted line of credit facilities totaling $40.0 million. Advances offered under the uncommitted lines of credit are subject to the discretion of the banks.

The first facility is an uncommitted $20.0 million line of credit that bears interest at a rate per annum as offered by the bank for the applicable period. At December 31, 2012, the entire borrowing capacity of $20.0 million was available under this credit facility.

The second facility is a $20.0 million uncommitted line of credit that bears interest at a rate per annum as offered by the bank for the applicable period. We have issued $4.3 million in letters of credit under this credit facility. There have been no draws on these letters of credit as of December 31, 2012. We do not anticipate that the letters of credit will be drawn upon by the counterparties, and we expect that the letters of credit will be renewed to the extent necessary in the future. At December 31, 2012, there was $15.7 million available under this credit facility, which is net of $4.3 million for letters of credit issued.

In addition to the four unsecured bank lines of credit, we entered into a new, unsecured short-term credit facility for $40.0 million with an existing lender on June 22, 2012. Short-term borrowings under this new facility bear interest at LIBOR plus 80 basis points or, at our discretion, the lender’s base rate plus 80 basis points. This facility, which is structured in the form of a revolving credit note, matures on October 31, 2013. Our total short-term borrowing capacity available under this facility at December 31, 2012 was $30.0 million.