Investments (Schedule of Continuous Losses) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 9,000	$ 6,187
Less than 12 Months, Gross Unrealized Losses	174	121
12 Months or Longer, Fair Value	1,958	2,022
12 Months or Longer, Gross Unrealized Losses	499	515
Total Fair Value	10,958	8,209
Total Gross Unrealized Losses	673	636
Total Securities in a Loss Position	25	20
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	2,430	2,226
Less than 12 Months, Gross Unrealized Losses	58	31
12 Months or Longer, Fair Value	984	963
12 Months or Longer, Gross Unrealized Losses	28	49
Total Fair Value	3,414	3,189
Total Gross Unrealized Losses	86	80
Total Securities in a Loss Position	7	7
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	4,160	2,904
Less than 12 Months, Gross Unrealized Losses	88	77
12 Months or Longer, Fair Value	130	165
12 Months or Longer, Gross Unrealized Losses	29	8
Total Fair Value	4,290	3,069
Total Gross Unrealized Losses	117	85
Total Securities in a Loss Position	12	8
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value		206
Less than 12 Months, Gross Unrealized Losses		8
12 Months or Longer, Fair Value		65
12 Months or Longer, Gross Unrealized Losses		1
Total Fair Value		271
Total Gross Unrealized Losses	0	9
Total Securities in a Loss Position		2
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	1,241	356
Less than 12 Months, Gross Unrealized Losses	14	3
12 Months or Longer, Fair Value	0	0
12 Months or Longer, Gross Unrealized Losses	0	0
Total Fair Value	1,241	356
Total Gross Unrealized Losses	14	3
Total Securities in a Loss Position	3	1
US Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	1,169	495
Less than 12 Months, Gross Unrealized Losses	14	2
12 Months or Longer, Fair Value	0	0
12 Months or Longer, Gross Unrealized Losses	0	0
Total Fair Value	1,169	495
Total Gross Unrealized Losses	14	2
Total Securities in a Loss Position	2	1
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Gross Unrealized Losses	0	0
12 Months or Longer, Fair Value	844	829
12 Months or Longer, Gross Unrealized Losses	442	457
Total Fair Value	844	829
Total Gross Unrealized Losses	$ 442	$ 457
Total Securities in a Loss Position	1	1