Condensed Consolidated Statement of Changes in Partners' Equity (USD $) In Thousands, except Share data	Total	General Partner	Limited Partners Common Units	Limited Partners Subordinated Units	Accumulated Other Comprehensive Income
BALANCES at Mar. 31, 2011	$ 47,353	$ 72	$ 47,225		$ 56
BALANCES (in units) at Mar. 31, 2011			10,933,568
Increase (Decrease) in Partners' Equity
Distribution to partners ($0.35 per unit)	(3,850)	(4)	(3,846)
Conversion of common units to subordinated units			(23,485)	23,485
Conversion of common units to subordinated units (in units)			(5,919,346)	5,919,346
Sale of units in public offering, net	75,289		75,289
Sale of units in public offering, net (in units)			4,025,000
Repurchase of common units	(3,418)		(3,418)
Repurchase of common units (in units)			(175,000)
General partner contribution	85	85
Net loss	(12,168)	(12)	(8,452)	(3,704)
Distribution to partners ($0.1669 per unit)	(2,470)	(3)	(1,479)	(988)
Foreign currency translation adjustment	(56)				(56)
BALANCES at Sep. 30, 2011	$ 100,765	$ 138	$ 81,834	$ 18,793
BALANCES (in units) at Sep. 30, 2011			8,864,222	5,919,346