Note 6 - Comprehensive Income

6 Months Ended

Jun. 30, 2011

Comprehensive Income (Loss) Note [Text Block]

Note 6 – Comprehensive Income

The components of comprehensive income included the following:

	Three months ended June 30,					Six months ended June 30,
	2011		2010			2011		2010
Net income	$	11,949	$	17,562		$	29,102	$	40,162
Other comprehensive income (loss):
Unrealized gain (loss) on short-term investments, net of tax		40		(26	)		32		(103	)
Total comprehensive income	$	11,989	$	17,536		$	29,134	$	40,059