Quarterly report pursuant to Section 13 or 15(d)

Short-term Investments (Details)

v2.4.0.8
Short-term Investments (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Mar. 31, 2013
Schedule of Investments [Line Items]    
Certificates of deposit $ 1,722 $ 3,682
Held-to-maturity, pre-refunded municipal bonds 16,271 20,667
Total short-term investments $ 17,993 $ 24,349