Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

Years ended March 31,	2018			2017		2016
					(Restated)	(Restated)
	(In thousands, except per share amounts)
Basic
Net (loss) earnings	$	(13,811	)	$	15,895	$	56,399
Deduct preferred stock dividends		23			23		23
Undistributed (loss) earnings		(13,834	)		15,872		56,376
(Loss) earnings attributable to participating preferred shareholders		(66	)		146		563
(Loss) earnings attributable to common shareholders	$	(13,768	)	$	15,726	$	55,813
Weighted average common shares outstanding		9,769			9,785		9,878
Basic (loss) earnings per common share	$	(1.41	)	$	1.61	$	5.65
Diluted
(Loss) earnings attributable to common shareholders	$	(13,768	)	$	15,726	$	55,813
Add dividends on convertible preferred stock		-			20		20
Earnings attributable to common stock on a diluted basis	$	(13,768	)	$	15,746	$	55,833
Weighted average common shares outstanding-basic		9,769			9,785		9,878
Additional shares to be issued related to the equity compensation plan		-			2		3
Additional shares to be issued under full conversion of preferred stock		-			67		67
Total shares for diluted		9,769			9,854		9,948
Diluted (loss) earnings per share	$	(1.41	)	$	1.60	$	5.61