|
Investments (Details Textual) (USD $)
|
6 Months Ended | |||
|---|---|---|---|---|
|
Jul. 02, 2011
|
Jun. 30, 2012
Minimum [Member]
|
Jun. 30, 2012
Maximum [Member]
|
Jun. 30, 2012
Mutual funds [Member]
|
|
| Investments (Textual) [Abstract] | ||||
| Auction rate preferred securities in municipal and state agencies, maturity period | 15 years | 30 years | ||
| Realized loss from sale of mutual funds | $ 0 | $ 4,000 | ||
| X | ||||||||||
|
- Definition
Auction rate preferred securities in municipal and state agencies maturity period. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The total amount of proceeds received for the sale of securities, categorized neither as held-to-maturity nor trading securities, during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|