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 17)	685			685
Restricted stock issued (Note 17) (in shares)		86,217
Unrestricted stock issued (Note 17)	75			75
Unrestricted stock issued (Note 17) (in shares)		10,722
Stock options issued (Note 17)	65			65
Stock issued (Note 17)	15,525	0		15,525	0		0
Stock issued (Note 17) (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 17)	397			397
Restricted stock issued (Note 17) (in shares)		45,754
Unrestricted stock issued (Note 17)	19			19
Unrestricted stock issued (Note 17) (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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,882				2,882		2,882
Preferred stock dividends	(782)				(782)
Restricted stock issued (Note 17)
Restricted stock issued (Note 17) (in shares)
Unrestricted stock issued (Note 17)	19			19
Unrestricted stock issued (Note 17) (in shares)		2,541
Translation adjustment	1,512					1,512	1,512
Balances at Sep. 30, 2012	$ 84,668	$ 1	$ 14,900	$ 88,288	$ (20,912)	$ 2,391	$ 4,394
Balances (in shares) at Sep. 30, 2012		17,726,847	300,000