|
Fair Value Disclosures - Financial Assets and Liabilities Measured at Fair Value (Details) (USD $)
In Thousands, unless otherwise specified |
Sep. 30, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Assets: SERP | $ 3,004 | $ 2,421 |
|
Level 1 [Member]
|
||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Assets: SERP | 0 | 0 |
|
Level 2 [Member]
|
||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Assets: SERP | 3,004 | 2,421 |
|
Level 3 [Member]
|
||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Assets: SERP | $ 0 | $ 0 |