Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Sep. 29, 2012		Oct. 01, 2011		Sep. 29, 2012		Oct. 01, 2011
Revenues
Products	$ 46,490		$ 50,329		$ 90,638		$ 98,048
On-Site services	213,671		236,842		417,360		457,549
Total	260,161		287,171		507,998		555,597
Cost of sales
Products	26,076	[1]	27,660	[1]	50,277	[1]	53,927	[1]
On-Site services	154,031	[1]	170,645	[1]	298,393	[1]	326,223	[1]
Total	180,107	[1]	198,305	[1]	348,670	[1]	380,150	[1]
Gross profit	80,054		88,866		159,328		175,447
Selling, general & administrative expenses	62,596		63,256		126,546		129,900
Intangibles amortization	3,474		3,176		6,938		6,235
Operating income	13,984		22,434		25,844		39,312
Interest expense (income), net	1,893		769		3,823		1,834
Other expenses (income), net	588		273		949		565
Income before provision for income taxes	11,503		21,392		21,072		36,913
Provision for income taxes	4,370		6,548		8,007		12,446
Net income	$ 7,133		$ 14,844		$ 13,065		$ 24,467
Earnings per common share
Basic	$ 0.43		$ 0.83		$ 0.77		$ 1.37
Diluted	$ 0.43		$ 0.83		$ 0.77		$ 1.36
Weighted-average common shares outstanding
Basic	16,696		17,858		16,990		17,917
Diluted	16,752		17,865		17,040		17,968
Dividends per share	$ 0.08		$ 0.07		$ 0.16		$ 0.14

[1] Exclusive of depreciation and intangibles amortization