Short-term Investments (Tables)

9 Months Ended

Sep. 30, 2013

Investments Debt And Equity Securities [Abstract]

Fair Values of Available-for-Sale Securities by Contractual Maturity

The fair values of available-for-sale securities by contractual maturity were as follows (in thousands):

Contractual maturity	September 30, 2013
	(In thousands)
	(Unaudited)
Maturing in one year or less	$	20,093
Maturing after one year through three years		12,829
Total available-for-sale securities	$	32,922