Consolidated Statement of Changes in Equity - USD ($)	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	$ 47,398,000	$ 45,118,000	$ 61,000	$ 55,474,000	$ (50,898,000)	$ (417,000)	$ (1,940,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	5,354,000	0	0	0	5,354,000	0	0
Other comprehensive loss, net of tax	(786,000)	0	0	0	0	0	(786,000)
Stock based compensation expense	5,000	0	0	5,000	0	0	0
Stockholders' equity - Ending Balance at Mar. 31, 2018	51,971,000	45,118,000	61,000	55,479,000	(45,544,000)	(417,000)	(2,726,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(5,936,000)	0	0	0	(5,936,000)	0	0
Other comprehensive loss, net of tax	1,066,000	0	0	0	0	0	1,066,000
Stock based compensation expense	35,000	0	0	35,000	0	0	0
Stockholders' equity - Ending Balance at Mar. 31, 2019	47,136,000	45,118,000	61,000	55,514,000	(52,201,000)	(417,000)	(939,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 0	$ 0	$ 0	$ 0	$ (721,000)	$ 0	$ 721,000