Accumulated Other Comprehensive Loss - Additional Information (Detail) $ in Thousands	6 Months Ended
Jun. 30, 2017 USD ($)
Interest Expense [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss to be reclassified to interest expense	$ 62

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Period Type:	duration