Property, Plant And Equipment (Tables)

12 Months Ended

Aug. 31, 2012

Property, Plant And Equipment [Abstract]

Schedule Of Property, Plant And Equipment

	August, 31
$ in thousands	2012		2011
Operating property, plant and equipment:
Land	$	2,541	$	2,859
Buildings		28,652		29,372
Equipment		75,097		71,942
Other		9,003		5,521
Total operating property, plant and equipment		115,293		109,694
Accumulated depreciation		(70,596)		(65,083)
Total operating property, plant and equipment, net	$	44,697	$	44,611
Property held for lease:
Machines		3,945		3,907
Barriers		17,457		18,198
Total property held for lease	$	21,402	$	22,105
Accumulated depreciation		(9,919)		(8,251)
Total property held for lease, net	$	11,483	$	13,854
Property, plant and equipment, net	$	56,180	$	58,465