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Computation of Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2012

Computation of Earnings Per Share [Abstract]

Calculation of basic and diluted earnings per share

The calculation of basic and diluted earnings per share for the years ended December 31 was as follows:

		2012				2011				2010
Numerator
Net income attributable to PLPC		$	29,286			$	30,984			$	23,113
Denominator
Determination of shares
Weighted-average common shares outstanding			5,324				5,259				5,242
Dilutive effect—share-based awards			47				99				93
Diluted weighted-average common shares outstanding			5,371				5,358				5,335
Earnings per common share attributable to PLPC shareholders
Basic		$	5.50			$	5.89			$	4.41
Diluted		$	5.45			$	5.78			$	4.33

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations.

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