Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Securities available for sale, at fair value: | ||
| Fixed maturities, amortized cost | $ 1,104,303 | $ 1,088,258 |
| Equity securities, cost | 240,699 | 169,593 |
| Securities held to maturity, at amortized cost: | ||
| Fixed maturities, fair value | $ 3,012 | $ 3,124 |
| Class A Common Stock [Member] | ||
| Triple-S Management Corporation stockholders' equity | ||
| Common stock, par value (in dollars per share) | $ 1 | $ 1 |
| Common stock, authorized (in shares) | 100,000,000 | 100,000,000 |
| Common stock, issued (in shares) | 950,968 | 950,968 |
| Common stock, outstanding (in shares) | 950,968 | 950,968 |
| Class B Common Stock [Member] | ||
| Triple-S Management Corporation stockholders' equity | ||
| Common stock, par value (in dollars per share) | $ 1 | $ 1 |
| Common stock, authorized (in shares) | 100,000,000 | 100,000,000 |
| Common stock, issued (in shares) | 23,321,163 | 24,047,755 |
| Common stock, outstanding (in shares) | 23,321,163 | 24,047,755 |