Earnings per share (Tables)

6 Months Ended

Jun. 30, 2011

Earnings per Share [Abstract]

Basic and diluted earnings per share

	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
Weighted average number of shares outstanding used to calculate basic EPS		5,785,000		6,123,000		5,804,000		6,095,000
Dilutive Securities:
Stock options and restricted share units		144,000		282,000		170,000		307,000
Weighted average number of shares and share equivalents used to calculate diluted EPS		5,929,000		6,405,000		5,974,000		6,402,000