INVESTMENTS (Gross Unrealized Losses and Related Fair Values for Debt and Equity Securities, Grouped by Duration of Time in Continuous Unrealized Loss Position) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fair Value [Abstract]
Less than 12 Months		$ 0
12 Months or Longer, Fair Value		2,287
Total		2,287
Gross unrealized loss position [Abstract]
Less than 12 Months		0
12 Months or Longer, Accumulated Loss		39
Total		39
Total Investments, excluding equity securities, less than 12 months, Fair Value		76,371
Total Investments, excluding equity securities, Less than 12 Months, Gross Unrealized Losses		535
Total Investments, excluding equity securities, 12 months or longer, Fair Value		12,378
Total Investments, excluding equity securities, 12 months or longer, Gross Unrealized Losses		96
Total Investments, excluding equity securities, Total Fair Value		88,749
Total Investments, excluding equity securities, Total Gross Unrealized Losses		631
United States Government Obligations and Authorities
Fair value [Abstract]
Less than 12 months	$ 52,573	49,833
12 Months or Longer	149	2,218
Total	52,722	52,051
Gross unrealized losses [Abstract]
Less than 12 months	197	409
12 Months or Longer	3	17
Total	200	426
Fair Value [Abstract]
Less than 12 Months		0
12 Months or Longer, Fair Value		2,287
Total		2,287
Gross unrealized loss position [Abstract]
Less than 12 Months		0
12 Months or Longer, Accumulated Loss		39
Total		39
Obligations of States and Political Subdivisions
Fair value [Abstract]
Less than 12 months	105	6,810
12 Months or Longer	0	0
Total	105	6,810
Gross unrealized losses [Abstract]
Less than 12 months	0	22
12 Months or Longer	0	0
Total	0	22
Corporate
Fair value [Abstract]
Less than 12 months	25,597	15,872
12 Months or Longer	0	7,694
Total	25,597	23,566
Gross unrealized losses [Abstract]
Less than 12 months	585	94
12 Months or Longer	0	38
Total	585	132
Fair Value [Abstract]
Less than 12 Months		0
12 Months or Longer, Fair Value		0
Total		0
Gross unrealized loss position [Abstract]
Less than 12 Months		0
12 Months or Longer, Accumulated Loss		0
Total		0
International
Fair value [Abstract]
Less than 12 months	4,962	3,856
12 Months or Longer	206	179
Total	5,168	4,035
Gross unrealized losses [Abstract]
Less than 12 months	60	10
12 Months or Longer	1	2
Total	61	12
Fair Value [Abstract]
Less than 12 Months		0
12 Months or Longer, Fair Value		0
Total		0
Gross unrealized loss position [Abstract]
Less than 12 Months		0
12 Months or Longer, Accumulated Loss		0
Total		0
Debt Securities
Fair value [Abstract]
Less than 12 months	83,237	76,371
12 Months or Longer	355	10,091
Total	83,592	86,462
Gross unrealized losses [Abstract]
Less than 12 months	842	535
12 Months or Longer	4	57
Total	$ 846	$ 592