Stockholders' Equity (The Company's stock option activity) (Detail) (1999 Stock Option Plan, USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2012
1999 Stock Option Plan
Options, Opening Balance	10,000	0
Options, Granted	0
Options, Exercised	0
Options, Forfeited	(10,000)
Options, Ending Balance	0	0
Weighted Average Exercise Price, Outstanding at December 31, 2010	$ 11.94
Aggregate Intrinsic Value, Outstanding at December 31, 2010	$ 0
Weighted Average Remaining Contractual Life (Years), Outstanding at December 31, 2010	5 months 1 day

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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