XML 50 R36.htm IDEA: XBRL DOCUMENT v3.3.1.900
Valuation and Qualifying Accounts (Detail) - Allowance for Doubtful Accounts - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period $ 166 $ 392 $ 623
Additions Charged to Costs and Expenses 332 75  
Charge to Other     (231)
Deductions (75) (301)  
Balance at End of Period $ 423 $ 166 $ 392