Income Taxes - Income Tax Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current	$ 16	$ 22	$ 40	$ 53
Deferred	21	30	49	64
Total	$ 37	$ 52	$ 89	$ 117