CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
REVENUES
Premiums earned, affiliated	$ 149,988	$ 144,540	$ 436,804	$ 425,513
Other income, affiliated	39	420	307	1,119
LOSSES AND EXPENSES
Losses and settlement expenses, affiliated	106,795	101,323	295,061	278,915
Amortization of deferred policy acquisition costs, affiliated	26,256	25,835	79,584	77,872
Other underwriting expenses, affiliated	17,600	16,046	52,120	50,297
Other expense, affiliated	$ 481	$ 473	$ 1,414	$ 1,363