RESTATEMENT OF FINANCIAL STATEMENTS (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Sales Of product And services	$ 234,282	$ 169,321
Total revenues	244,724	178,899
Cost of sales, product and services	194,391	140,674
Total costs and expenses	231,161	172,616
Net earnings	8,062	3,703
Net earnings per common share - basic (in dollars per share)	$ 1.04	$ 0.45
Net earnings per common share - diluted (in dollars per share)	$ 1.02	$ 0.44
As reported [Member]
Sales Of product And services		201,966
Total revenues		211,544
Cost of sales, product and services		173,319
Total costs and expenses		205,261
Net earnings		3,703
Net earnings per common share - basic (in dollars per share)		$ 0.45
Net earnings per common share - diluted (in dollars per share)		$ 0.44
Adjustments [Member]
Sales Of product And services		(32,645)
Total revenues		(32,645)
Cost of sales, product and services		(32,645)
Total costs and expenses		(32,645)
Net earnings		$ 0
Net earnings per common share - basic (in dollars per share)		$ 0
Net earnings per common share - diluted (in dollars per share)		$ 0