Statements of Stockholders' Equity and Other Comprehensive Income (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Preferred Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income	Comprehensive Income
Balances at Mar. 31, 2011	$ 58,329	$ 1	$ 14,900	$ 71,503	$ (30,666)	$ 2,591	$ 1,614
Balances (in shares) at Mar. 31, 2011		14,779,339	300,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,123				8,123		8,123
Preferred stock dividends	(2,806)				(2,806)
Restricted stock issued (Note 16)	685			685
Restricted stock issued (Note 16) (in shares)		86,217
Unrestricted stock issued (Note 16)	75			75
Unrestricted stock issued (Note 16) (in shares)		10,722
Stock options issued (Note 16)	65			65
Stock issued (Note 16)	15,525	0		15,525	0		0
Stock issued (Note 16) (in shares)		2,800,000
Translation adjustment	(651)					(651)	(651)
Balances at Mar. 31, 2012	79,345	1	14,900	87,853	(25,349)	1,940	7,472
Balances (in shares) at Mar. 31, 2012		17,676,278	300,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,095				3,095		3,095
Preferred stock dividends	(758)				(758)
Restricted stock issued (Note 16)	397			397
Restricted stock issued (Note 16) (in shares)		45,754
Unrestricted stock issued (Note 16)	19			19
Unrestricted stock issued (Note 16) (in shares)		2,274
Translation adjustment	(1,061)					(1,061)	(1,061)
Balances at Jun. 30, 2012	$ 81,037	$ 1	$ 14,900	$ 88,269	$ (23,012)	$ 879	$ 2,034
Balances (in shares) at Jun. 30, 2012		17,724,306	300,000