Consolidated Statement of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	COMMON STOCK	RETAINED EARNINGS	ACCUMULATED OTHER COMPREHENSIVE INCOME
STOCKHOLDERS' EQUITY BALANCE at Dec. 31, 2011	$ 449,687	$ 44,414	$ 405,109	$ 164
Increase (Decrease) in Stockholders' Equity
Net income	11,809		11,809
Other comprehensive gain	80			80
Common stock dividends (per share $0.09)	(4,092)		(4,092)
Stock-based compensation	14,299	574	13,725
TOTAL EQUITY BALANCE at Sep. 30, 2012	497,366
STOCKHOLDERS' EQUITY BALANCE at Sep. 30, 2012	471,783	44,988	426,551	244
NONCONTROLLING INTEREST at Sep. 30, 2012	$ 25,583