Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Stock-based Compensation [Abstract]

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

Non-vested restricted share awards outstanding under both the 2007 Long-term Incentive Plan and the 2006 Non-employee Director Stock Incentive Plan as of December 31, 2013 and changes during the year were as follows:

(Shares stated in thousands)	Number of Shares		Weighted Average Grant Date Fair Value per Share
Non-vested at December 31, 2012	634,310		$	89.42
Granted	181,896		129.29
Vested	(222,176	)	80.56
Forfeited	(30,695	)	82.16
Non-vested at December 31, 2013	563,335		$	105.58

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

The following table presents the change in outstanding stock options under the Plan and the Director Plan for the years ended December 31, 2013 and 2012.

	Shares		Range of Exercise Prices	Weighted Average Exercise Price		Weighted Average Remaining Life	Average Intrinsic Value - Per Share
Balance as of December 31, 2012	12,000		$ 4.42 - 12.50	$	6.95	0.8	$	102.36
Options granted	—		—	—
Options exercised	(12,000	)	4.42 - 12.50	6.95
Options forfeited	—		—	—
Balance as of December 31, 2013	—		—	$	—

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

For the years ended December 31, 2013, 2012 and 2011, stock-based compensation expense recognized in the income statement is as follows (in thousands):

	2013		2012		2011
Cost of product sales and services	$	10,268	$	8,835	$	10,960
General and administrative	10,258		9,546		6,205
Total stock-based compensation expense	$	20,526	$	18,381	$	17,165