Schedule II - Condensed Financial Information of Triple-S Management Corporation, Transactions with Related Parties (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
Note
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Summary of Significant Related Party Transactions [Abstract]      
Accrued interest $ 13,668 $ 12,624  
Parent Company [Member]      
Summary of Significant Related Party Transactions [Abstract]      
Rent charges to subsidiaries 7,801 7,801 $ 7,801
Interest charged to subsidiary on note receivable 2,258 2,758 2,527
Interest charged from subsidiary on note payable 755 720 $ 755
Note payable to subsidiary 15,000 15,000  
Accrued interest $ 1,475 720  
Interest rate 4.70%    
Parent Company [Member] | Notes Receivable from Subsidiaries Pursuant to Provisions of Article 29.30 of Puerto Rico Insurance Code [Member]      
Summary of Significant Related Party Transactions [Abstract]      
Number of notes receivable from subsidiaries | Note 3    
Note receivable from subsidiary $ 30,750 35,250  
Period for obtaining written authorization from the commissioner of insurance prior to proposed payment date 60 days    
Accrued interest $ 5,660 4,100  
Interest rate 4.70%    
Parent Company [Member] | Various Notes Receivable from Subsidiary [Member]      
Summary of Significant Related Party Transactions [Abstract]      
Note receivable from subsidiary $ 10,645 9,460  
Accrued interest $ 98 $ 48  
Interest rate 5.10%    
Parent Company [Member] | Various Notes Receivable from Subsidiary [Member] | Minimum [Member]      
Summary of Significant Related Party Transactions [Abstract]      
Debt instrument, maturity date Dec. 31, 2019    
Parent Company [Member] | Various Notes Receivable from Subsidiary [Member] | Maximum [Member]      
Summary of Significant Related Party Transactions [Abstract]      
Debt instrument, maturity date Dec. 31, 2020