UNAUDITED SELECTED QUARTERLY FINANCIAL DATA: (Tables)

12 Months Ended

Mar. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Schedule of unaudited selected quarterly financial data

The operating results for any quarter are not necessarily indicative of results for any future period.  Unaudited quarterly results are as follows:

	Quarter ended			Quarter ended			Quarter ended		Quarter ended
	June 30,			September 30,			December 31,		March 31,
(dollars in thousands except per-share amounts)	2017			2017			2017		2018
Revenue	$	212,514		$	225,240		$	234,871	$	244,781
Gross profit	98,554			110,168			118,951		123,297
Income (loss) from operations	(5,707		)	453			11,058		4,795
Net earnings (loss)	(1,300		)	(3,336		)	22,941		5,175
Basic earnings (loss) per share:
Net earnings (loss)	(0.02		)	(0.04		)	0.29		0.07
Diluted earnings (loss) per share:
Net earnings (loss)	(0.02		)	(0.04		)	0.28		0.06

	Quarter ended		Quarter ended		Quarter ended		Quarter ended
	June 30,		September 30,		December 31,		March 31,
(dollars in thousands except per-share amounts)	2016		2016		2016		2017
Revenue	$	214,801	$	217,267	$	223,312	$	224,867
Gross profit	91,982		97,162		106,844		106,573
Income (loss) from operations	8,162		7,120		9,115		(8,709		)
Net earnings (loss)	3,976		7,140		1,073		(8,081		)
Basic earnings (loss) per share:
Net earnings (loss)	0.05		0.09		0.01		(0.10		)
Diluted earnings (loss) per share:
Net earnings (loss)	0.05		0.09		0.01		(0.10		)