Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table presents instruments which were not dilutive and were excluded from the computation of diluted EPS in each period, as well as the dilutive common stock equivalent shares which were included in the computation of diluted EPS: 

	Three Months Ended   March 31,
	2018	2017
	(In thousands)
Non-dilutive instruments	7	35
Dilutive common stock equivalents	94	100