Annual report pursuant to Section 13 and 15(d)

Investments in an Unrealized Loss Position, Determined to be Temporarily Impaired (Detail)

 v2.3.0.11
Investments in an Unrealized Loss Position, Determined to be Temporarily Impaired (Detail) (USD $)
In Thousands
Jun. 30, 2011
Fair Value  
Less than one year $ 3,561
Greater than one year 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total 3,561
Unrealized Losses  
Less than one year 58
Greater than one year 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total $ 58