Earnings per share (Tables)

9 Months Ended

Sep. 30, 2011

Earnings per Share [Abstract]

Basic and diluted earnings per share

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Weighted average number of shares outstanding used to calculate basic EPS		5,301,000		5,748,000		5,634,000		5,978,000
Dilutive Securities:
Stock options and restricted share units		136,000		263,000		158,000		293,000
Weighted average number of shares and share equivalents used to calculate diluted EPS		5,437,000		6,011,000		5,792,000		6,271,000