Schedule II-Valuation And Qualifying Account And Reserve (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at Beginning of Period	$ 120	$ 36	$ 448
Additions/Charged to Expense	23	103	4
Deductions	(40)	(19)	(416)
Balance at End of Period	$ 103	$ 120	$ 36