Investments (Details) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2014
|
Dec. 31, 2013
|
---|---|---|
Schedule of Held-to-maturity Securities [Line Items] | ||
Amortized Cost | $ 31,366 | $ 30,220 |
Market Value | 32,740 | 31,568 |
Municipal Bonds, Current [Member]
|
||
Schedule of Held-to-maturity Securities [Line Items] | ||
Amortized Cost | 5,544 | 5,196 |
Market Value | 5,608 | 5,264 |
Municipal Bonds, Due from One Through Five Years [Member]
|
||
Schedule of Held-to-maturity Securities [Line Items] | ||
Amortized Cost | 15,498 | 17,636 |
Market Value | 16,372 | 18,527 |
Municipal Bonds, Due from Six Through Ten Years [Member]
|
||
Schedule of Held-to-maturity Securities [Line Items] | ||
Amortized Cost | 9,829 | 7,388 |
Market Value | 10,269 | 7,777 |
Municipal Bonds, Due from Eleven through Twenty years [Member]
|
||
Schedule of Held-to-maturity Securities [Line Items] | ||
Amortized Cost | 495 | 0 |
Market Value | $ 491 | $ 0 |