Fair Value Measurements (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
U.S. States and political subdivisions securities
Changes in the fair value of assets measured on a recurring basis
Balance at the beginning of the period	$ 7,701	$ 10,493
Total gains or losses (realized/unrealized): included in earnings	(140)	0
Total gains or losses (realized/unrealized): included in other comprehensive income	566	258
Purchases	2,200	0
Issuances	0	0
Sales	(2,000)
Settlements	0	0
Maturities	2,829	3,050
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance at the end of the period	5,498	7,701
Foreign government and other securities
Changes in the fair value of assets measured on a recurring basis
Balance at the beginning of the period	0	675
Total gains or losses (realized/unrealized): included in earnings	0	0
Total gains or losses (realized/unrealized): included in other comprehensive income	0	0
Purchases	0	0
Issuances	0	0
Sales	0
Settlements	0	0
Maturities	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	(675)
Balance at the end of the period	0	0
Investment securities available-for-sale
Changes in the fair value of assets measured on a recurring basis
Balance at the beginning of the period	7,701	11,168
Total gains or losses (realized/unrealized): included in earnings	(140)	0
Total gains or losses (realized/unrealized): included in other comprehensive income	566	258
Purchases	2,200	0
Issuances	0	0
Sales	(2,000)
Settlements	0	0
Maturities	2,829	3,050
Transfers into Level 3	0	0
Transfers out of Level 3	0	(675)
Balance at the end of the period	$ 5,498	$ 7,701