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Schedule II. Condensed Financial Information of Registrant - Condensed Balance Sheets (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | --- | --- | ---
Assets |  |  |  |
Short-term investments | $ 7,718 | $ 33,684 |  |
Other investments | 12,217 | 11,748 |  |
Total investments | 1,045,152 | 1,016,333 |  |
Cash and cash equivalents | 69,481 | 90,956 | $ 123,077 | $ 92,676
Deferred income taxes | 29,905 | 31,231 |  |
Property and equipment, net | 6,181 | 7,240 |  |
Other assets | 42,788 | 14,287 |  |
Total assets | 1,502,045 | 1,457,220 |  |
Liabilities: |  |  |  |
Accounts payable and other liabilities | 30,484 | 30,110 |  |
Total liabilities | 1,048,064 | 1,010,252 |  |
Shareholders' equity (net of Treasury stock of $22,370 at December 31, 2015 and 2014) | 453,981 | 446,968 | 416,814 | 381,222
Total liabilities and shareholders' equity | 1,502,045 | 1,457,220 |  |
Parent Company [Member] |  |  |  |
Assets |  |  |  |
Short-term investments |  | 250 |  |
Other investments | 12,217 | 11,748 |  |
Investment in subsidiaries | 408,135 | 387,954 |  |
Total investments | 420,352 | 399,952 |  |
Cash and cash equivalents | 26,968 | 43,585 | $ 47,726 | $ 31,792
Deferred income taxes | 292 | 1,001 |  |
Notes receivable from subsidiaries | 1,505 | (1) |  |
Property and equipment, net | 1,817 | 2,070 |  |
Other assets | 3,047 | 4,992 |  |
Total assets | 453,981 | 451,599 |  |
Liabilities: |  |  |  |
Accounts payable and other liabilities |  | 3,853 |  |
Notes payable to subsidiaries |  | 778 |  |
Total liabilities |  | 4,631 |  |
Shareholders' equity (net of Treasury stock of $22,370 at December 31, 2015 and 2014) | 453,981 | 446,968 |  |
Total liabilities and shareholders' equity | $ 453,981 | $ 451,599 |  |

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