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Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Numerator:
Net income attributable to common shareholders	$ 4,849	$ 4,900	$ 9,327	$ 8,646
Denominator:
Denominator for basic earnings per share-weighted-average shares	11,781	11,807	11,754	11,767
Effect of dilutive securities-Stock options	122	192	118	211
Denominator for diluted earnings per share-adjusted weighted-average shares	11,903	11,999	11,872	11,978
Earnings per share attributable to common shareholders:
Basic	$ 0.41	$ 0.42	$ 0.79	$ 0.73
Diluted	$ 0.41	$ 0.41	$ 0.79	$ 0.72

X

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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