Net Income Per Share (Tables)

6 Months Ended

Sep. 30, 2012

Earnings Per Share [Abstract]

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

	Three Months Ended September 30,				Six Months Ended September 30,
	2012		2011		2012		2011
Net income (numerator):
Net income	$	4,034	$	3,930	$	7,986	$	8,767
Shares (denominator):
Weighted average number of common shares
outstanding used in basic computation		19,962		20,642		20,040		21,142
Common shares issuable upon the vesting
of restricted stock		90		58		104		86
Common shares issuable upon conversion
of preferred shares		10		10		10		10
Shares used in diluted computation		20,062		20,710		20,154		21,238
Net income per common share:
Basic	$	0.20	$	0.19	$	0.40	$	0.41
Diluted	$	0.20	$	0.19	$	0.40	$	0.41