XML 68 R94.htm IDEA: XBRL DOCUMENT v2.4.0.8
Restricted Assets - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 1 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Apr. 30, 2013
Letter of Credit [Member]
Line of Credit Facility [Line Items]        
Increase in letter of credit secured by cash deposit       $ 1,900
Letter of credit secured by cash deposit 1,900      
Restricted cash 1,900 1,338    
Period of life insurance policy 1 year      
Recognized revenue $ 270 $ 251 $ 376