Shareholders' Equity Transactions (Tables)

6 Months Ended

Jun. 30, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

The amount of amount of stock-based compensation expense recognized under the provisions of Compensation-Stock Compensation, ASC 718 was as follows (in thousands):

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2014		2013		2014		2013
Stock-based compensation expense recognized as part of selling, general and administrative expense	$	1,771	$	1,414	$	2,470	$	2,574

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

The following table summarizes information about stock option activity for the six months ended June 30, 2014:

	June 30, 2014			Weighted Average Exercise Price
Options outstanding at January 1, 2014	4,533,782			$	23.86
Granted	8,977			16.71
Exercised	(8,810		)	14.93
Canceled	(179,241		)	19.98
Options outstanding at June 30, 2014	4,354,708			$	24.02
Options exercise price range at June 30, 2014	$ 12.42 to
	$	47.80
Options exercisable at June 30, 2014	3,095,001
Shares available for grant at June 30, 2014*	3,622,692

 ________________________

 * Shares available for grant as of June 30, 2014 reduced by net restricted stock and restricted stock unit award and performance share and performance share unit award activity of 387,068 shares and 440,600 shares, respectively during the quarter.

Schedule of Share-based Compensation, Stock Options Outstanding [Table Text Block]

The following table summarizes information about stock options outstanding at June 30, 2014:

	Options Outstanding				Options Exercisable
Exercise Prices	Number Outstanding At 6/30/14	Weighted Average Remaining Contractual Life (Years)	Weighted Average Exercise Price		Number Exercisable At 6/30/14	Weighted Average Exercise Price
$ 12.42 – $15.00	1,222,011	8.4	$	13.95	307,617	$	13.97
$ 15.01 – $25.00	1,548,349	4.9	22.47		1,314,501	22.20
$ 25.01 – $35.00	898,383	5.0	25.72		786,918	25.77
$ 35.01 – $47.80	685,965	0.7	43.23		685,965	43.23
Total	4,354,708	5.2	$	24.02	3,095,001	$	26.95