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Stock-based Compensation Stock-based Compensation (Details 3) (Market-based restricted stock unit)	3 Months Ended
	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.00%
Expected dividend yield	0.00%
Expected term	3 years
FLIR
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	0.00%
S&P 500
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	0.00%

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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