Long-Term Debt	3 Months Ended
Mar. 31, 2017
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Senior Unsecured Notes On March 24, 2014, the Company issued $200,000 of 6.75% senior notes due on April 1, 2021 (the “Notes”), all of which are currently outstanding. Interest on the Notes is payable semi-annually in arrears on April 1 and October 1. The Notes carry optional redemption features whereby the Company has the option to redeem the notes, in whole or in part, on or after April 1, 2020 at par, plus accrued and unpaid interest, if any, and on or after April 1, 2017 at par plus a premium declining ratably to par, plus accrued and unpaid interest, if any. The Notes are fully and unconditionally guaranteed on a senior unsecured basis jointly and severally by all of the Company's existing and future domestic subsidiaries that guarantee the 2016 Credit Facility (as defined below). The Notes permit the Company to make certain restricted payments, such as purchasing shares of its stock and paying cash dividends, within certain parameters, the most restrictive of which generally limits such restricted payments to 50% of net income, adjusted for certain items as described in the indenture. As of March 31, 2017, 2016 and December 31, 2016, deferred debt issuance costs of $3,279, $3,963 and $3,455, respectively, are included as a direct deduction from the carrying amount of the Notes in the accompanying condensed consolidated balance sheets. Revolving Credit Facilities At March 31, 2017, the Company maintained a line of credit with a group of U.S. based commercial lenders (the “2016 Credit Facility”) in the amount of $400,000, which matures in September 2021. At March 31, 2017, the Company had $137,000 in outstanding borrowings and $5,956 in outstanding letters of credit under the 2016 Credit Facility, leaving $257,044 available for future borrowings. The 2016 Credit Facility bears interest, at the Company’s option, at either (i) the prevailing London Interbank Offered Rate (“LIBOR”) (with interest periods of 1 week or 1, 2, 3 or 6 months at the Company’s option) plus a fixed spread of 2.5% or (ii) the prevailing prime or base rate plus a fixed spread of 1.5%. The agreement has a LIBOR floor of 0%. Additionally, the Company is required to pay an annual commitment fee of 0.50% on the average daily unused portion of the 2016 Credit Facility commitment. The weighted-average interest rate on amounts outstanding under the 2016 Credit Facility at March 31, 2017 was 3.50% based on 1 week LIBOR. Under the terms of the 2016 Credit Facility, the Company is required to maintain certain financial ratios and comply with certain financial covenants and the Company is allowed to make certain restricted payments, such as purchasing shares of its stock, within certain parameters provided the Company maintains compliance with those financial ratios and covenants after giving effect to such restricted payments. The 2016 Credit Facility also contains customary restrictions on the Company’s ability to incur additional debt, grant liens, make investments, consummate acquisitions and similar negative covenants with customary carve-outs and baskets. The Company was in compliance with the requirements and covenants of the 2016 Credit Facility as of March 31, 2017. During the three months ended March 31, 2017, the Company made net payments of $123,000 pursuant to the 2016 Credit Facility. At March 31, 2017, the Company maintained a U.S. dollar denominated line of credit with a bank in Mexico (the “Mexico Credit Facility”) in the amount of $10,000. The Mexico Credit Facility bears interest at 30-day LIBOR plus a fixed spread of 2.0% and matures in December 2017. Under the terms of the Mexico Credit Facility, the Company is required to maintain certain financial ratios and comply with certain financial covenants. The Company was in compliance with the requirements and covenants of the Mexico Credit Facility as of March 31, 2017. The Company is required to pay a one-time commitment fee of $25 due when the first amount is drawn/borrowed. At March 31, 2017, the Company had no amount outstanding under the Mexico Credit Facility and $10,000 was available for borrowings.

Long-Term Debt

Senior Unsecured Notes

On March 24, 2014, the Company issued $200,000 of 6.75% senior notes due on April 1, 2021 (the “Notes”), all of which are currently outstanding. Interest on the Notes is payable semi-annually in arrears on April 1 and October 1. The Notes carry optional redemption features whereby the Company has the option to redeem the notes, in whole or in part, on or after April 1, 2020 at par, plus accrued and unpaid interest, if any, and on or after April 1, 2017 at par plus a premium declining ratably to par, plus accrued and unpaid interest, if any. The Notes are fully and unconditionally guaranteed on a senior unsecured basis jointly and severally by all of the Company's existing and future domestic subsidiaries that guarantee the 2016 Credit Facility (as defined below). The Notes permit the Company to make certain restricted payments, such as purchasing shares of its stock and paying cash dividends, within certain parameters, the most restrictive of which generally limits such restricted payments to 50% of net income, adjusted for certain items as described in the indenture. As of March 31, 2017, 2016 and December 31, 2016, deferred debt issuance costs of $3,279, $3,963 and $3,455, respectively, are included as a direct deduction from the carrying amount of the Notes in the accompanying condensed consolidated balance sheets.

Revolving Credit Facilities

At March 31, 2017, the Company maintained a line of credit with a group of U.S. based commercial lenders (the “2016 Credit Facility”) in the amount of $400,000, which matures in September 2021. At March 31, 2017, the Company had $137,000 in outstanding borrowings and $5,956 in outstanding letters of credit under the 2016 Credit Facility, leaving $257,044 available for future borrowings. The 2016 Credit Facility bears interest, at the Company’s option, at either (i) the prevailing London Interbank Offered Rate (“LIBOR”) (with interest periods of 1 week or 1, 2, 3 or 6 months at the Company’s option) plus a fixed spread of 2.5% or (ii) the prevailing prime or base rate plus a fixed spread of 1.5%. The agreement has a LIBOR floor of 0%. Additionally, the Company is required to pay an annual commitment fee of 0.50% on the average daily unused portion of the 2016 Credit Facility commitment. The weighted-average interest rate on amounts outstanding under the 2016 Credit Facility at March 31, 2017 was 3.50% based on 1 week LIBOR. Under the terms of the 2016 Credit Facility, the Company is required to maintain certain financial ratios and comply with certain financial covenants and the Company is allowed to make certain restricted payments, such as purchasing shares of its stock, within certain parameters provided the Company maintains compliance with those financial ratios and covenants after giving effect to such restricted payments. The 2016 Credit Facility also contains customary restrictions on the Company’s ability to incur additional debt, grant liens, make investments, consummate acquisitions and similar negative covenants with customary carve-outs and baskets. The Company was in compliance with the requirements and covenants of the 2016 Credit Facility as of March 31, 2017. During the three months ended March 31, 2017, the Company made net payments of $123,000 pursuant to the 2016 Credit Facility.

At March 31, 2017, the Company maintained a U.S. dollar denominated line of credit with a bank in Mexico (the “Mexico Credit Facility”) in the amount of $10,000. The Mexico Credit Facility bears interest at 30-day LIBOR plus a fixed spread of 2.0% and matures in December 2017. Under the terms of the Mexico Credit Facility, the Company is required to maintain certain financial ratios and comply with certain financial covenants. The Company was in compliance with the requirements and covenants of the Mexico Credit Facility as of March 31, 2017. The Company is required to pay a one-time commitment fee of $25 due when the first amount is drawn/borrowed. At March 31, 2017, the Company had no amount outstanding under the Mexico Credit Facility and $10,000 was available for borrowings.