Schedule of Debt (Parenthetical) (Detail) (Note 5, North Point)	0 Months Ended	12 Months Ended
Feb. 13, 2012	Dec. 31, 2013
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate	2.00%
Interest rate swap lock
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate	3.57%	3.57%

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration