Consolidated Statements of Equity Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effects of accounting changes	$ (3,724)			$ 21,121	$ (24,845)
Beginning balance at Dec. 31, 2017	995,041	$ 324,419	$ 382,127	6,062,995	(106,923)	$ (5,667,577)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	55,187			55,187
Other comprehensive income, net of tax	5,775				5,775
Comprehensive income	60,962
Dividends declared	(15,094)			(15,094)
Stock-based awards activity	(4,631)		(82,283)			77,652
Stock-based compensation	3,599		3,599
Other activity	483		483
Ending balance at Mar. 31, 2018	1,036,636	324,419	303,926	6,124,209	(125,993)	(5,589,925)
Beginning balance at Dec. 31, 2018	1,340,924	324,419	301,352	6,429,512	(136,511)	(5,577,848)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	73,979			73,979
Other comprehensive income, net of tax	1,079				1,079
Comprehensive income	75,058
Dividends declared	(15,139)			(15,139)
Stock-based awards activity	(338)		(43,275)			42,937
Stock-based compensation	4,433		4,433
Other activity	313		313
Ending balance at Mar. 31, 2019	$ 1,405,251	$ 324,419	$ 262,823	$ 6,488,352	$ (135,432)	$ (5,534,911)

Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation.

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