Share-Based Compensation - Schedule of Deferred Stock Units to be Settled in Shares (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
Jun. 30, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Beginning balance of Outstanding Shares	0
Granted, Shares	117
Vested, Shares	0
Forfeited, Shares	0
Ending balance of Outstanding Shares	117
Beginning balance of Weighted Average Grant-Date Fair Value Per Unit	$ 0.00
Granted, Weighted Average Grant-Date Fair Value Per Unit	$ 4.39
Vested, Weighted Average Grant-Date Fair Value Per Unit	$ 0.00
Forfeited, Weighted Average Grant-Date Fair Value Per Unit	$ 0.00
Ending balance of Weighted Average Grant-Date Fair Value Per Unit	$ 4.39

The number of equity-based deferred stock units, that were forfeited during the reporting period.

No definition available.

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The number of grants made during the period for deferred stock units.

No definition available.

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Share Based Compensation Arrangement By Share Based Payment Award Deferred Stock Units Grants In Period Weighted Average Grant Date Fair Value

No definition available.

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Share Based Compensation Arrangement By Share Based Payment Award Deferred Stock Units Nonvested Forfeited Weighted Average Grant Date Fair Value

No definition available.

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The number of non-vested equity-based payment deferred stock units that validly exist and are outstanding as of the balance sheet date.

No definition available.

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Share Based Compensation Arrangement By Share Based Payment Award Deferred Stock Units Nonvested Weighted Average Grant Date Fair Value

No definition available.

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Share Based Compensation Arrangement By Share Based Payment Award Deferred Stock Units Vested Weighted Average Grant Date Fair Value

No definition available.

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The number of equity-based deferred stock units that vested during the reporting period.

No definition available.

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