(5) Investments

As of June 30, 2011, we held certain investments that are required to be measured for disclosure purposes at fair value on a recurring basis. These investments are considered Level 2 investments. We consider as current assets those investments which will mature in the next 12 months. The remaining investments are considered non-current assets. The amortized cost and fair value of our investments that are being accounted for as held-to-maturity securities, and the related gross unrealized gains and losses, were as follows as of June 30, 2011 ( in thousands):

			Gross Unrealized
	Cost		Gains		Losses		Fair Value
Short-term Investments:
Corporate bonds	$	19,166	$	214	$	—	$	19,380

Long-term Investments:
Corporate bonds	$	18,742	$	466	$	—	$	19,208

At June 30, 2011, the length of time until maturity of these securities ranged from two to 36 months.