ESTIMATED FAIR VALUE OF FINANCIAL INSTRUMENTS - Carrying Amounts and Estimated Fair Values of Financial Instruments (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Financial liabilities:
Credit Facility revolving loans, carrying value	$ 40,000,000	$ 85,000,000
Financial liabilities:
Credit Facility revolving loans, fair value	40,000,000	85,000,000
Senior Notes 6.75% Issued March 24 2011
Financial liabilities:
Senior notes, carrying value	675,000,000	675,000,000
Financial liabilities:
Senior Notes, fair value	705,038,000	690,390,000
Senior Notes 8.375 Percent Due 2014
Financial liabilities:
Senior notes, carrying value	0	3,573,000
Financial liabilities:
Senior Notes, fair value	0	3,627,000
Argentina Operations
Financial assets:
Notes and accounts receivable - related parties, carrying amount	10,205,000	12,355,000
Financial assets:
Notes and accounts receivable - related parties, fair value	$ 10,205,000	$ 12,355,000

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- Definition

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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-Publisher FASB

-Name Accounting Standards Codification

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-Subparagraph (SX 210.4-08.(k)(1))

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- Details

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- Definition

Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Line-of-Credit Arrangement

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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-Publisher SEC

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- Definition

Fair value portion of receivables, including, but not limited to, trade account receivables, note receivables, and loan receivables.

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-Publisher FASB

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- Definition

Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

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