Note 7 - Long-Term Debt	6 Months Ended
Jun. 30, 2014
Disclosure Text Block [Abstract]
Long-term Debt [Text Block]	Note 7. Long-Term Debt The Company entered into a Fourth Amended and Restated Business Loan and Security Agreement (the “Credit Facility”) on May 16, 2014 with a syndication of 11 commercial banks. The Credit Facility amends and restates the agreement entered into on March 14, 2012, as amended on May 29, 2012 and on July 31, 2013. The Company amended the Credit Facility to allow for borrowing in foreign currencies and to enter into local financial arrangements for its foreign subsidiaries. The Credit Facility continues to allow for borrowings of up to $500.0 million; however, it extends the term of the Credit Facility from March 14, 2017 to May 16, 2019 (five years from the closing date). The Credit Facility provides for borrowings of up to $400.0 million without a borrowing base requirement, taking into account financial, performance-based limitations. The Credit Facility also provides for an “accordion feature,” 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 Company incurred approximately $0.8 million in additional debt issuance costs during the three months ended June 30, 2014 related to amending the Credit Facility, which are amortized over the term of the agreement. 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 June 30, 2014, 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 1.40% to 3.25% for the first six months of 2014. As of June 30, 2014, the Company had $132.8 million in long-term debt outstanding, $1.8 million in outstanding letters of credit, and available borrowing capacity of $265.4 million under the Credit Facility (excluding the accordion feature). Taking into account the financial, performance-based limitations, available borrowing capacity was $260.1 million as of June 30, 2014.

Note 7 - Long-Term Debt

6 Months Ended

Jun. 30, 2014

Note 7. Long-Term Debt

The Company entered into a Fourth Amended and Restated Business Loan and Security Agreement (the “Credit Facility”) on May 16, 2014 with a syndication of 11 commercial banks. The Credit Facility amends and restates the agreement entered into on March 14, 2012, as amended on May 29, 2012 and on July 31, 2013. The Company amended the Credit Facility to allow for borrowing in foreign currencies and to enter into local financial arrangements for its foreign subsidiaries. The Credit Facility continues to allow for borrowings of up to $500.0 million; however, it extends the term of the Credit Facility from March 14, 2017 to May 16, 2019 (five years from the closing date). The Credit Facility provides for borrowings of up to $400.0 million without a borrowing base requirement, taking into account financial, performance-based limitations. The Credit Facility also provides for an “accordion feature,” 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 Company incurred approximately $0.8 million in additional debt issuance costs during the three months ended June 30, 2014 related to amending the Credit Facility, which are amortized over the term of the agreement. 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 June 30, 2014, 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 1.40% to 3.25% for the first six months of 2014.

As of June 30, 2014, the Company had $132.8 million in long-term debt outstanding, $1.8 million in outstanding letters of credit, and available borrowing capacity of $265.4 million under the Credit Facility (excluding the accordion feature). Taking into account the financial, performance-based limitations, available borrowing capacity was $260.1 million as of June 30, 2014.