REVENUES BY PRODUCT CATEGORY AND GEOGRAPHIC REGION AND SIGNIFICANT CONCENTRATIONS (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Revenue from External Customer [Line Items]
Product sales, net										$ 244,700	$ 227,220	$ 218,827
Development and licensing revenue										0	0	74
Total revenues		$ 67,918	$ 59,670	$ 58,854	$ 58,258	$ 58,200	$ 52,772	$ 58,552	$ 57,696	244,700	227,220	218,901
Instruments [Member]
Revenue from External Customer [Line Items]
Product sales, net	[1]									39,104	39,257	43,042
Consumables [Member]
Revenue from External Customer [Line Items]
Product sales, net	[2]									191,345	175,346	165,025
Other Products [Member]
Revenue from External Customer [Line Items]
Product sales, net	[3]									$ 14,251	$ 12,617	$ 10,760

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

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

[3] Other products include products using the Orbos process and extended maintenance agreements.