Long-Term Debt	3 Months Ended
Mar. 31, 2016
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Senior Unsecured Notes On March 24, 2014, the Company issued $200,000,000 of 6.75% senior notes due on April 1, 2021 (the “Notes”). Interest on the Notes is payable semi-annually in arrears on April 1 and October 1. 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 2015 Credit Facility. The Notes permit the Company to make certain restricted payments, such as repurchasing shares of its stock and paying cash dividends, within certain parameters, the most restrictive of which generally limits such restricted payments to 50% of adjusted net income. As of March 31, 2016, 2015 and December 31, 2015, deferred debt issuance costs of $3,963,000, $4,591,000 and $4,126,000, 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, 2016, the Company maintained a line of credit with a group of U.S. based commercial lenders (the “2015 Credit Facility”) in the amount of $210,000,000, which matures in October 2020. At March 31, 2016, the Company had $40,000,000 outstanding under the 2015 Credit Facility and $170,000,000 was available for borrowings. The 2015 Credit Facility bears interest, at the Company’s option, at either (i) the prevailing London Interbank Offered Rate (“LIBOR”) (with interest periods of 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 2015 Credit Facility requires a minimum LIBOR rate of 0%. The weighted-average interest rate on amounts outstanding under the 2015 Credit Facility at March 31, 2016 was 3.00% based on the prevailing 30-day LIBOR rate. The 2015 Credit Facility requires the Company to maintain certain financial ratios and comply with certain financial covenants and allows the Company to make certain restricted payments, such as repurchasing shares of its stock and paying cash dividends, within certain parameters, provided the Company maintains compliance with those financial ratios and covenants after giving effect to such restricted payments. The Company was in compliance with the requirements and covenants of the 2015 Credit Facility as of March 31, 2016. During the three months ended March 31, 2016, the Company made net payments of $18,000,000 pursuant to the 2015 Credit Facility. At March 31, 2016, the Company maintained a line of credit with a bank in Mexico (the “Mexico Credit Facility”) in the amount of $10,000,000. The Mexico Credit Facility bears interest at the prevailing 30-day LIBOR rate 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 is required to pay a one-time commitment fee of $25,000 due when the first amount is drawn/borrowed. At March 31, 2016, the Company had no amount outstanding under the Mexico Credit Facility and $10,000,000 was available for borrowings.

Long-Term Debt

Senior Unsecured Notes

On March 24, 2014, the Company issued $200,000,000 of 6.75% senior notes due on April 1, 2021 (the “Notes”). Interest on the Notes is payable semi-annually in arrears on April 1 and October 1. 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 2015 Credit Facility. The Notes permit the Company to make certain restricted payments, such as repurchasing shares of its stock and paying cash dividends, within certain parameters, the most restrictive of which generally limits such restricted payments to 50% of adjusted net income. As of March 31, 2016, 2015 and December 31, 2015, deferred debt issuance costs of $3,963,000, $4,591,000 and $4,126,000, 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, 2016, the Company maintained a line of credit with a group of U.S. based commercial lenders (the “2015 Credit Facility”) in the amount of $210,000,000, which matures in October 2020. At March 31, 2016, the Company had $40,000,000 outstanding under the 2015 Credit Facility and $170,000,000 was available for borrowings. The 2015 Credit Facility bears interest, at the Company’s option, at either (i) the prevailing London Interbank Offered Rate (“LIBOR”) (with interest periods of 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 2015 Credit Facility requires a minimum LIBOR rate of 0%. The weighted-average interest rate on amounts outstanding under the 2015 Credit Facility at March 31, 2016 was 3.00% based on the prevailing 30-day LIBOR rate. The 2015 Credit Facility requires the Company to maintain certain financial ratios and comply with certain financial covenants and allows the Company to make certain restricted payments, such as repurchasing shares of its stock and paying cash dividends, within certain parameters, provided the Company maintains compliance with those financial ratios and covenants after giving effect to such restricted payments. The Company was in compliance with the requirements and covenants of the 2015 Credit Facility as of March 31, 2016. During the three months ended March 31, 2016, the Company made net payments of $18,000,000 pursuant to the 2015 Credit Facility.

At March 31, 2016, the Company maintained a line of credit with a bank in Mexico (the “Mexico Credit Facility”) in the amount of $10,000,000. The Mexico Credit Facility bears interest at the prevailing 30-day LIBOR rate 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 is required to pay a one-time commitment fee of $25,000 due when the first amount is drawn/borrowed. At March 31, 2016, the Company had no amount outstanding under the Mexico Credit Facility and $10,000,000 was available for borrowings.