INVESTMENTS (Details 5) - 10K (USD $)	Dec. 31, 2014	Dec. 31, 2013
Amortized cost of available-for-sale debt securities by contractual maturity
Due in one year or less	$ 19,147,000
Due after one year through five years	219,567,000
Due after five years through 10 years	570,196,000
Due after 10 years	248,956,000
Total amoritzed cost	1,448,204,000	1,431,049,000
Fair value of available-for-sale debt securities by contractual maturity
Due in one year or less	19,368,000
Due after one year through five years	229,146,000
Due after five years through 10 years	587,807,000
Due after 10 years	258,994,000
Total fair value	1,495,087,000	1,440,052,000
Amortized cost of debt securities held-to-maturity by contractual maturity
Held-to-maturity Securities, Total		651,000
Fair value of debt securities held-to-maturity by contractual maturity
Total fair value	0	687,000
Net unrealized appreciation of available-for-sale fixed maturities and equity securities	264,000,000	208,800,000
Mtge/ABS/CMBS
Amortized cost of available-for-sale debt securities by contractual maturity
Total amoritzed cost	390,338,000
Fair value of available-for-sale debt securities by contractual maturity
Total fair value	$ 399,772,000