REVENUES BY PRODUCT AND SERVICE CATEGORY AND GEOGRAPHIC REGION AND SIGNIFICANT CONCENTRATIONS, REVENUES BY GEOGRAPHIC REGION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Revenues from External Customers [Line Items]
Total revenues	$ 52,017	$ 56,051	$ 50,471	$ 44,054	$ 39,216	$ 38,318	$ 43,541	$ 40,956	$ 202,593	$ 162,031	$ 180,878
North America [Member]
Revenues from External Customers [Line Items]
Total revenues									163,308	126,768	147,627
Europe [Member]
Revenues from External Customers [Line Items]
Total revenues									30,422	27,161	26,086
Asia Pacific and Rest of the World [Member]
Revenues from External Customers [Line Items]
Total revenues									$ 8,863	$ 8,102	$ 7,165