Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands		Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest
Balance at Mar. 31, 2020		$ 25,011	$ 756	$ (2,617)	$ 2,636	$ 23,768	$ (537)	$ 1,005	[1]
Balance (in shares) at Mar. 31, 2020			3,023	141
Increase (Decrease) in Stockholders' Equity
Net loss	[1]	(7,293)				(7,277)		(16)
Foreign currency translation loss		(409)					(409)
Adjustment to fair value of redeemable non-controlling interest		(2,857)			(2,636)	(221)
Unrealized gain of interest rate swaps, net of tax		262					262
Balance at Mar. 31, 2021		14,714	$ 756	$ (2,617)	0	16,270	(684)	989	[1]
Balance (in shares) at Mar. 31, 2021			3,023	141
Increase (Decrease) in Stockholders' Equity
Net loss	[1]	11,043				10,928		115
Repurchase of common stock		(385)		$ (385)
Repurchase of common stock (in shares)				15
Stock compensation expense		393			393
Foreign currency translation loss		(549)					(549)
Adjustment to fair value of redeemable non-controlling interest		531				531
Unrealized gain of interest rate swaps, net of tax		929					929
Put option issued to co-investor in CAM		(1,000)				(1,000)
Reclassification of interest rate swaps into earnings		41					41
Balance at Mar. 31, 2022		$ 25,717	$ 756	$ (3,002)	$ 393	$ 26,729	$ (263)	$ 1,104	[1]
Balance (in shares) at Mar. 31, 2022			3,023	156

[1] Excludes amount attributable to redeemable non-controlling interest in Contrail and Shanwick.