Note 6 - Long-term Debt	9 Months Ended
Sep. 30, 2015
Notes to Financial Statements
Long-term Debt [Text Block]	Note 6. Long-Term Debt The Company entered into a Fourth Amended and Restated Business Loan and Security Agreement with a syndication of 11 commercial banks on May 16, 2014, which was further modified on November 5, 2014 (the “Credit Facility”). The Credit Facility matures on May 16, 2019 (five years from the closing date). The Credit Facility allows for borrowings of up to $500.0 million without a borrowing base requirement, taking into account financial, performance-based limitations and provides for an “accordion,” which permits additional revolving credit commitments of up to $100.0 million, subject to lenders’ approval. The Credit Facility provides for stand-by letters of credit aggregating up to $30.0 million that reduce the funds available under the revolving line of credit when issued. The Credit Facility is collateralized by substantially all of the assets of the Company and requires that the Company remain in compliance with certain financial and non-financial covenants. The financial covenants, as defined in the Credit Facility, require, among other things, that the Company maintain, on a consolidated basis for each quarter, a fixed charge coverage ratio of not less than 1.25 to 1.00 and a leverage ratio of not more than 3.75 to 1.00. As of September 30, 2015, the Company was in compliance with its covenants under the Credit Facility. The Company has the ability to borrow funds under its Credit Facility at interest rates based on both LIBOR and prime rates, at its discretion, plus their applicable margins. Interest rates on debt outstanding ranged from 2.17% to 4.25% for the first nine months of 2015. As of September 30, 2015, the Company had $332.2 million in long-term debt outstanding, $3.7 million in outstanding letters of credit, and unused borrowing capacity of $164.1 million under the Credit Facility (excluding the accordion). Taking into account the financial, performance-based limitations, available borrowing capacity (excluding the accordion) was $110.1 million as of September 30, 2015.

Note 6. Long-Term Debt

The Company entered into a Fourth Amended and Restated Business Loan and Security Agreement with a syndication of 11 commercial banks on May 16, 2014, which was further modified on November 5, 2014 (the “Credit Facility”). The Credit Facility matures on May 16, 2019 (five years from the closing date). The Credit Facility allows for borrowings of up to $500.0 million without a borrowing base requirement, taking into account financial, performance-based limitations and provides for an “accordion,” which permits additional revolving credit commitments of up to $100.0 million, subject to lenders’ approval. The Credit Facility provides for stand-by letters of credit aggregating up to $30.0 million that reduce the funds available under the revolving line of credit when issued. The Credit Facility is collateralized by substantially all of the assets of the Company and requires that the Company remain in compliance with certain financial and non-financial covenants. The financial covenants, as defined in the Credit Facility, require, among other things, that the Company maintain, on a consolidated basis for each quarter, a fixed charge coverage ratio of not less than 1.25 to 1.00 and a leverage ratio of not more than 3.75 to 1.00. As of September 30, 2015, the Company was in compliance with its covenants under the Credit Facility.

The Company has the ability to borrow funds under its Credit Facility at interest rates based on both LIBOR and prime rates, at its discretion, plus their applicable margins. Interest rates on debt outstanding ranged from 2.17% to 4.25% for the first nine months of 2015.

As of September 30, 2015, the Company had $332.2 million in long-term debt outstanding, $3.7 million in outstanding letters of credit, and unused borrowing capacity of $164.1 million under the Credit Facility (excluding the accordion). Taking into account the financial, performance-based limitations, available borrowing capacity (excluding the accordion) was $110.1 million as of September 30, 2015.