Quarterly Financial Results (unaudited) (Tables)

12 Months Ended

Dec. 31, 2011

Quarterly Financial Results (unaudited) [Abstract]

Schedule of Unaudited Quarterly Financial Results

The following table sets forth certain unaudited quarterly results of operations of the Company for the years ended December 31, 2011 and 2010. In the opinion of management, this information has been prepared on the same basis as the audited consolidated financial statements and all necessary adjustments, consisting only of normal recurring adjustments, have been included in the amounts below for a fair statement of the quarterly information when read in conjunction with the audited consolidated financial statements and related notes.

	For the Three Months Ended
	March 31, 2011		June 30, 2011		Sept. 30, 2011		Dec. 31, 2011
	(In thousands, except per share data)
Revenues	$	275,953	$	276,989	$	281,856	$	323,740
Cost of revenues	$	89,068	$	89,647	$	93,284	$	102,544
Net income	$	50,617	$	47,921	$	42,285	$	60,081
Basic net income per share	$	0.27	$	0.26	$	0.23	$	0.34
Diluted net income per share	$	0.26	$	0.25	$	0.23	$	0.33
Basic weighted average common shares	186,849		186,612		183,085		178,916
Diluted weighted average common shares	191,383		190,179		185,704		182,956

	For the Three Months Ended
	March 31, 2010		June 30, 2010		Sept. 30, 2010		Dec. 31, 2010
	(In thousands, except per share data)
Revenues	$	240,029	$	245,318	$	253,551	$	284,688
Cost of revenues	$	67,474	$	71,840	$	77,812	$	86,277
Net income	$	40,878	$	38,123	$	39,709	$	52,510
Basic net income per share	$	0.24	$	0.22	$	0.22	$	0.29
Diluted net income per share	$	0.22	$	0.20	$	0.21	$	0.27
Basic weighted average common shares	171,101		173,317		181,457		183,362
Diluted weighted average common shares	189,013		190,479		191,271		191,837