Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
REVENUE
Freight and related revenue	$ 39,040	$ 35,164	$ 75,367	$ 65,858
Fuel and other surcharges	11,107	12,840	23,582	24,172
Outside voyage charter revenue	424	392	1,234	702
TOTAL REVENUE	50,571	48,396	100,183	90,732
EXPENSES
Outside voyage charter fees (Note 18)	423	390	1,245	697
Vessel operating expenses	31,986	31,255	65,143	59,831
Repairs and maintenance	270	206	657	1,032
General and administrative	3,175	2,453	6,145	5,429
Depreciation	3,623	2,942	7,111	5,733
Amortization of drydock costs	873	732	1,752	1,471
Amortization of intangibles	328	332	654	669
Loss (gain) on foreign exchange	(18)	(36)	(14)	(67)
TOTAL EXPENSES	40,660	38,274	82,693	74,795
OPERATING INCOME	9,911	10,122	17,490	15,937
OTHER (INCOME) AND EXPENSES
Interest expense (Note 19)	2,236	2,439	4,940	4,440
Interest income	(2)	(1)	(6)	(2)
Gain on interest rate swap contracts (Note 21)	(272)	(46)	(542)	(91)
Loss on extinguishment of debt (Note 14)	3,339	0	3,339	0
TOTAL OTHER (INCOME) AND EXPENSES	5,301	2,392	7,731	4,347
INCOME BEFORE INCOME TAXES	4,610	7,730	9,759	11,590
PROVISION FOR INCOME TAXES (Note 6)
Current	0	265		322
Deferred	1,728	987	3,782	1,461
TOTAL PROVISION FOR INCOME TAXES	1,728	1,252	3,782	1,783
NET INCOME BEFORE PREFERRED STOCK DIVIDENDS	2,882	6,478	5,977	9,807
PREFERRED STOCK DIVIDENDS	782	694	1,540	1,354
NET INCOME APPLICABLE TO COMMON STOCKHOLDERS	$ 2,100	$ 5,784	$ 4,437	$ 8,453
Net income per share basic (Note 20)	$ 0.12	$ 0.38	$ 0.25	$ 0.56
Net income per share diluted (Note 20)	$ 0.12	$ 0.37	$ 0.25	$ 0.56
Weighted average shares basic	17,724,389	15,142,066	17,722,242	15,001,283
Weighted average shares diluted	17,724,389	17,651,640	17,722,242	17,521,668