Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Schedule of Earnings Per Share Basic And Diluted

	Fiscal Years Ended March 31,
	2018		2017		2016
Basic Net Income Per Share
Net income	$	112,170	$	52,116	$	38,147
Weighted average shares used in computing basic net    income per share		44,153		43,238		42,204
Net income per share - basic	$	2.54	$	1.21	$	0.90

	Fiscal Years Ended March 31,
	2018		2017		2016
Diluted Net Income Per Share
Net income	$	112,170	$	52,116	$	38,147
Weighted average shares used in computing basic net    income per share		44,153		43,238		42,204
Effect of dilutive securities		1,696		1,420		2,691
Weighted average shares used in computing diluted    net income per share		45,849		44,658		44,895
Net income per share - diluted	$	2.45	$	1.17	$	0.85

Schedule of Changes in Beginning Stockholders’ Equity

See table below for the changes in beginning stockholders’ equity as a result of this implementation.

	Common Stock					Treasury Stock
	Number of shares			Par value		Number of shares			Amount				Additional Paid in Capital			Accumulated Deficit				Accumulated Other Comprehensive Income (Loss)				Total Stockholders' Equity
Balance, March 31, 2017		43,673,286	$		437		1,575,995	$		(46,763	)	$		565,962	$		(46,959	)	$		(20,606	)	$		452,071
Cumulative effect of adoption of new accounting standard														1,835			75,246								77,081
Balance, April 1, 2017		43,673,286	$		437		1,575,995	$		(46,763	)	$		567,797	$		28,287		$		(20,606	)	$		529,152