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Notes Payable and Other Noncurrent Liabilities - Notes Payable (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Line of Credit Facility [Line Items]    
Less: Current portion $ 6,625 $ 6,616
Notes Payable, Non-current 73,252 79,877
Notes payable 79,877 86,493
Notes Payable through December 2019 [Member]    
Line of Credit Facility [Line Items]    
Notes payable 79,525 86,049
Annuities Extending through 2019 [Member]    
Line of Credit Facility [Line Items]    
Notes payable $ 352 $ 444