Earnings per share (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Schedule of Reconciliation of Weighted Average Shares Used in Calculation of Basic and Diluted Net (Loss) Income Per Share

The following is a reconciliation of the weighted average shares used in the basic and diluted net loss per common share computations.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
Weighted average common shares-basic		18,855,533		18,577,540		18,785,696		18,408,238
Effect of dilutive securities:
Unexercised stock options net of treasury share    repurchase		—		195,846		—		156,284
Weighted average common shares-diluted		18,855,533		18,773,386		18,785,696		18,564,522