Investments (Schedule of Continuous Losses) (Details) $ in Thousands	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 19,493	$ 35,620
Less than 12 Months, Gross Unrealized Losses	408	974
12 Months or Longer, Fair Value	17,129	8,251
12 Months or Longer, Gross Unrealized Losses	558	725
Total Fair Value	36,622	43,871
Total Gross Unrealized Losses	$ 966	$ 1,699
Total Securities in a Loss Position	64	86
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 6,567	$ 14,036
Less than 12 Months, Gross Unrealized Losses	166	396
12 Months or Longer, Fair Value	5,607	2,594
12 Months or Longer, Gross Unrealized Losses	155	482
Total Fair Value	12,174	16,630
Total Gross Unrealized Losses	$ 321	$ 878
Total Securities in a Loss Position	20	33
Mortgage backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 5,872	$ 4,235
Less than 12 Months, Gross Unrealized Losses	124	84
12 Months or Longer, Fair Value	2,281	847
12 Months or Longer, Gross Unrealized Losses	150	89
Total Fair Value	8,153	5,082
Total Gross Unrealized Losses	$ 274	$ 173
Total Securities in a Loss Position	17	16
Private label asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value		$ 1,774
Less than 12 Months, Gross Unrealized Losses		53
12 Months or Longer, Fair Value		3,261
12 Months or Longer, Gross Unrealized Losses		112
Total Fair Value		5,035
Total Gross Unrealized Losses		$ 165
Total Securities in a Loss Position		11
Obligations of states and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 2,176	$ 4,154
Less than 12 Months, Gross Unrealized Losses	7	147
12 Months or Longer, Fair Value	2,574	0
12 Months or Longer, Gross Unrealized Losses	47	0
Total Fair Value	4,750	4,154
Total Gross Unrealized Losses	$ 54	$ 147
Total Securities in a Loss Position	9	9
U.S. Treasury securities and obligations of U.S. Government corporations and agencies
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 4,878	$ 11,421
Less than 12 Months, Gross Unrealized Losses	111	294
12 Months or Longer, Fair Value	6,667	291
12 Months or Longer, Gross Unrealized Losses	206	14
Total Fair Value	11,545	11,712
Total Gross Unrealized Losses	$ 317	$ 308
Total Securities in a Loss Position	18	16
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value		$ 0
Less than 12 Months, Gross Unrealized Losses		0
12 Months or Longer, Fair Value		1,258
12 Months or Longer, Gross Unrealized Losses		28
Total Fair Value		1,258
Total Gross Unrealized Losses		$ 28
Total Securities in a Loss Position		1