Comprehensive Income (Notes)

6 Months Ended

Jun. 30, 2011

COMPREHENSIVE INCOME: [Abstract]

Comprehensive Income (Loss) Note [Text Block]

COMPREHENSIVE INCOME:

The following table summarizes comprehensive income for the periods presented (in thousands):

	For the Three Months Ended June 30,
	2011			2010
Net income	$	17,156		$	34,963
Unrealized (loss) gain on investments	(79		)	67
Total comprehensive income	$	17,077		$	35,030

	For the Six Months Ended June 30,
	2011			2010
Net income	$	40,495		$	83,790
Unrealized (loss) gain on investments	(67		)	40
Total comprehensive income	$	40,428		$	83,830