Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Sep. 28, 2012		Sep. 30, 2011	Sep. 28, 2012		Sep. 30, 2011	Mar. 30, 2012
Segment Reporting Information [Line Items]
Net sales	$ 420,798		$ 391,710	$ 830,187		$ 772,201
Income (loss) from operations	26,971		30,044	48,225		50,010
Interest expense	(8,538)		(4,611)	(17,042)		(9,081)
Interest Income	13		17	27		44
Other income, net	243		437	723		969
Income from continuing operations before provision for income taxes	18,689		25,887	31,933		41,942
Depreciation and Amortization	8,115		6,941	15,768		13,677
Total assets	1,211,969	[1]		1,211,969	[1]		1,155,970	[1]
Physician [Member]
Segment Reporting Information [Line Items]
Net sales	256,651		251,601	510,849		497,072
Income (loss) from operations	22,969		24,862	43,334		44,765
Depreciation and Amortization	2,689		2,443	5,303		4,840
Laboratory [Member]
Segment Reporting Information [Line Items]
Net sales	115,712		94,263	221,178		183,949
Income (loss) from operations	10,813		9,878	19,331		18,426
Depreciation and Amortization	755		367	1,323		732
Dispensing [Member]
Segment Reporting Information [Line Items]
Net sales	23,874		19,612	46,399		39,226
Income (loss) from operations	475		2,645	832		2,632
Depreciation and Amortization	1,657		1,106	3,132		2,165
Home Care & Hospice [Member]
Segment Reporting Information [Line Items]
Net sales	24,272		25,585	51,124		50,858
Income (loss) from operations	2,422		2,658	4,608		5,207
Depreciation and Amortization	215		253	430		506
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total assets	709,456			709,456			610,859
Shared Services [Member]
Segment Reporting Information [Line Items]
Net sales	289		649	637		1,096
Income (loss) from operations	(9,708)		(9,999)	(19,880)		(21,020)
Depreciation and Amortization	2,799		2,772	5,580		5,434
Total assets	221,350			221,350			267,733
Assets Held For Sale [Member]
Segment Reporting Information [Line Items]
Total assets	$ 281,163			$ 281,163			$ 277,378

[1] See Footnote 4, Variable Interest Entity, for discussion of the assets and liabilities related to the Company’s consolidated variable interest entities. See Footnote 3, Discontinued Operations, for discussion of assets and liabilities held for sale.