Business Acquisition Acquiree operating results to date since acquisition (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Business Acquisition [Line Items]
Revenues	$ 84,331,000	$ 64,439,000	$ 223,858,000	$ 182,604,000
Net income	6,920,000	2,994,000	10,646,000	6,251,000
MTS-Medication Technologies [Member]
Business Acquisition [Line Items]
Revenues	18,300,000
Non-acute care solutions [Member]
Business Acquisition [Line Items]
Revenues			32,564,000
Non-acute care solutions [Member] | MTS-Medication Technologies [Member]
Business Acquisition [Line Items]
Revenues			19,937,000
Net income			$ 1,929,000