7. Income Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Computation of Basic and Diluted Income Per Share

	Year ended December 31,
	2017		2016		2015
	(In thousands, except per share amounts)
Net Income	$	36,593	$	27,581	$	28,925
Weighted average basic shares outstanding		1,846		1,824		1,846
Add: Effect of dilutive securities		11		33		24
Weighted average diluted shares outstanding		1,857		1,857		1,870
Net Income per share
Basic	$	19.82	$	15.12	$	15.67
Diluted	$	19.71	$	14.85	$	15.47