REVENUES BY PRODUCT AND SERVICE CATEGORY AND GEOGRAPHIC REGION AND SIGNIFICANT CONCENTRATIONS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2013		Mar. 31, 2012		Mar. 31, 2011
Revenue from External Customer [Line Items]
Product and service revenues, net									$ 185,875		$ 156,432		$ 142,424
Development and licensing revenue									150		164		1,252
Total revenues	49,951	49,802	44,258	42,014	42,718	37,850	40,025	36,003	186,025		156,596		143,676
Instruments [Member]
Revenue from External Customer [Line Items]
Product and service revenues, net									46,034	[1]	35,150	[1]	32,092	[1]
Consumables [Member]
Revenue from External Customer [Line Items]
Product and service revenues, net									127,481	[2]	113,810	[2]	102,920	[2]
Other Products And Services [Member]
Revenue from External Customer [Line Items]
Product and service revenues, net									$ 12,360	[3]	$ 7,472	[3]	$ 7,412	[3]

[1] Instruments include chemistry analyzers, hematology instruments, VSpro specialty analyzers and i-STAT analyzers.

[2] Consumables include reagent discs, hematology reagent kits, VSpro specialty cartridges, i-STAT cartridges and rapid tests.

[3] Other products and services include veterinary reference laboratory diagnostic and consulting services.