Net Income Per Share (Tables)

12 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Schedule of reconciliation of the numerators and denominators of the basic and diluted net income per share computations

	Year Ended March 31,
	2017		2016		2015
Net income (numerator):
Net income	$	23,819	$	20,567	$	17,453
Shares (denominator)
Weighted average number of common shares outstanding used in basic computation		20,232		20,124		20,015
Common shares issuable upon the vesting of restricted stock		136		120		111
Common shares issuable upon conversion of preferred shares		10		10		10
Shares used in diluted computation		20,378		20,254		20,136
Net income per common share:
Basic	$	1.18	$	1.02	$	0.87
Diluted	$	1.17	$	1.02	$	0.87