Income Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Income Tax Contingency [Line Items]
Minimum annual distribution of adjusted taxable income for REIT qualification	90.00%
Subsequent taxable years	4 years
Net deferred tax assets		$ 25,166
Internal Revenue Service (IRS) [Member]
Income Tax Contingency [Line Items]
Unrecognized tax benefits, increases resulting from prior period tax positions	$ 797	$ 797