Supplemental Cash Flow Disclosure

12 Months Ended

Dec. 31, 2011

Supplemental Cash Flow Disclosure [Abstract]

Supplemental Cash Flow Disclosure

2. Supplemental Cash Flow Disclosure

The table below sets forth supplemental disclosures of cash flow information and non-cash investing and financing activities (in thousands).

	Year Ended December 31,
	2011			2010		2009
Cash paid during the year for
Interest, net of interest capitalized	$	25,190		$	32,824	$	39,381
Income taxes	$	3,532		$	271	$	15,216
Non-cash investing and financing activities
Unrealized holding (losses) gains on marketable securities	$	(12,124	)	$	4,884	$	-
Tax benefit of non-qualified stock options exercised, net of (reversals) of tax benefits of non-qualified stock options exercised in previous years	$	-		$	-	$	(4,250	)