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Schedule 2 - Valuation and Qualifying Accounts (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract]
Decrease in allowance for doubtful accounts	$ 242us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease

X

- Definition

Amount of increase (decrease) in the allowance for doubtful accounts.

+ References

No definition available.

+ Details

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ValuationAndQualifyingAccountsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration