Consolidated Statement of Changes in Equity - 12 months ended Mar. 31, 2018 - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Treasury Stock	Accumulated Other Comprehensive Loss
Stockholders' equity - Beginning Balance at Mar. 31, 2017	$ 47,398	$ 45,118	$ 61	$ 55,474	$ (50,898)	$ (417)	$ (1,940)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	5,354	0	0	0	5,354	0	0
Other comprehensive loss, net of tax	(786)	0	0	0	0	0	(786)
Stock based compensation expense	5	0	0	5	0	0	0
Stockholders' equity - Ending Balance at Mar. 31, 2018	$ 51,971	$ 45,118	$ 61	$ 55,479	$ (45,544)	$ (417)	$ (2,726)