Summary of Significant Accounting Policies - Estimated Useful Lives of Property Plant and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	$ 16,274	$ 18,545
Less: accumulated depreciation	(5,542)	(6,918)
Property Plant And Equipment, Net	10,732	11,627
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	4,044	4,461
Property and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	$ 12,230	$ 14,084
Minimum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	10 years
Minimum [Member] | Property and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	2 years
Maximum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	40 years
Maximum [Member] | Property and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	10 years