Note 9 - Notes Payable	6 Months Ended
Jun. 30, 2013
Disclosure Text Block [Abstract]
Long-term Debt [Text Block]	9. Notes Payable During March 2013, the Company entered into a new five year 1.0 billion Mexican peso (“MXN”) term loan which matures in March 2018. This term loan bears interest at a rate equal to TIIE (Equilibrium Interbank Interest Rate) plus 1.35% (5.66% as of June 30, 2013). The Company has the option to swap this rate to a fixed rate at any time during the term of the loan. The Company used these proceeds to repay its 1.0 billion MXN term loan, which matured in March 2013 and bore interest at a fixed rate of 8.58%. As of June 30, 2013, the outstanding balance on this new term loan was MXN 1.0 billion (USD $76.8 million). During May 2013, the Company issued $350.0 million of 10-year Senior Unsecured Notes at an interest rate of 3.125% payable semi-annually in arrears which are scheduled to mature in May 2023. Net proceeds from the issuance were approximately $344.7 million, after related transaction costs of $0.5 million. The proceeds from this issuance were used for general corporate purposes including the partial reduction of borrowings under the Company’s revolving credit facility and the repayment of the $75.0 million senior unsecured notes which matured in June 2013. During the six months ended June 30, 2013, the Company repaid (i) its $100.0 million 6.125% senior unsecured notes, which matured in January 2013 and (ii) its $75.0 million 4.70% senior unsecured notes, which matured in June 2013. During July 2013, a wholly-owned subsidiary of the Company issued $200.0 million Canadian denominated (“CAD”) Series 4 unsecured notes on a private placement basis in Canada. The notes bear interest at 3.855% and are scheduled to mature on August 4, 2020. Proceeds from the notes will be used to repay the Company’s CAD $200.0 million 5.180% unsecured notes maturing on August 16, 2013.

Note 9 - Notes Payable

6 Months Ended

Jun. 30, 2013

9. Notes Payable

During March 2013, the Company entered into a new five year 1.0 billion Mexican peso (“MXN”) term loan which matures in March 2018. This term loan bears interest at a rate equal to TIIE (Equilibrium Interbank Interest Rate) plus 1.35% (5.66% as of June 30, 2013). The Company has the option to swap this rate to a fixed rate at any time during the term of the loan. The Company used these proceeds to repay its 1.0 billion MXN term loan, which matured in March 2013 and bore interest at a fixed rate of 8.58%. As of June 30, 2013, the outstanding balance on this new term loan was MXN 1.0 billion (USD $76.8 million).

During May 2013, the Company issued $350.0 million of 10-year Senior Unsecured Notes at an interest rate of 3.125% payable semi-annually in arrears which are scheduled to mature in May 2023. Net proceeds from the issuance were approximately $344.7 million, after related transaction costs of $0.5 million. The proceeds from this issuance were used for general corporate purposes including the partial reduction of borrowings under the Company’s revolving credit facility and the repayment of the $75.0 million senior unsecured notes which matured in June 2013.

During the six months ended June 30, 2013, the Company repaid (i) its $100.0 million 6.125% senior unsecured notes, which matured in January 2013 and (ii) its $75.0 million 4.70% senior unsecured notes, which matured in June 2013.

During July 2013, a wholly-owned subsidiary of the Company issued $200.0 million Canadian denominated (“CAD”) Series 4 unsecured notes on a private placement basis in Canada. The notes bear interest at 3.855% and are scheduled to mature on August 4, 2020. Proceeds from the notes will be used to repay the Company’s CAD $200.0 million 5.180% unsecured notes maturing on August 16, 2013.