ACQUISITION (Details) $ in Thousands			3 Months Ended		9 Months Ended
	Feb. 29, 2016 USD ($)	Mar. 04, 2015 USD ($) item	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)
Business acquisition
Finite-lived Intangible Assets Acquired					$ 1,200
Amount of investment						$ 1,711
Equity in earnings of unconsolidated investees			$ 1,881	$ 661	10,823	11,041
Cash consideration for purchase of agency					850
Associations Liability Insurance Agency
Business acquisition
Finite-lived Intangible Assets Acquired	$ 1,200
Total business acquisition consideration	1,200
Cash consideration for purchase of agency	900
Present value of an earn-out agreement to be paid in future years	$ 300
Prime Holdings Insurance Services, Inc. (Prime)
Business acquisition
Amount of investment		$ 1,700
Equity ownership interest (as a percent)		27.00%
Equity in earnings of unconsolidated investees			$ 300	$ 200	$ 900	$ 900
Number of insurance subsidiaries | item		2