Basic earnings (loss) per share is computed by dividing net income (loss) by the weighted average number of shares of common stock outstanding. Diluted earnings (loss) per share is computed by dividing net income (loss) by the weighted average common and potentially dilutive common equivalent shares outstanding, determined as follows:



	Three Months Ended		Nine Months Ended
	September 30,		September 30,
(In thousands)	2018	2017	2018	2017
Weighted average shares outstanding used to compute basic (loss) earnings per share	33,110	32,954	33,056	32,945
Incremental dilutive shares attributable to stock options and restricted stock	—	—	—	7
Shares used to compute diluted earnings (loss) per share	33,110	32,954	33,056	32,952

Incremental shares attributable to stock options and restricted stock are computed under the treasury stock method using the average market price during the related period. The Company had a net loss for the three and nine months ended September 30, 2018, so there is no dilutive impact for such shares. If the Company had reported net income for the three and nine months ended September 30, 2018, average out-of-the-money options to purchase shares that were excluded from the calculation of incremental shares attributable to stock options and restricted stock were 178,676 and 236,138, respectively. For the three and nine months ended September 30, 2017, average out-of-the-money options to purchase shares that were excluded from the calculation of incremental shares attributable to stock options and restricted stock were 479,651 and 386,729, respectively.