CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (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, 2015	Mar. 31, 2014	Mar. 31, 2013
Consolidated Statements Of Comprehensive Income
Net income (loss)	$ (2,730)	$ 148	$ (950)	$ (1,446)	$ (4,978)	$ (6,189)	$ 3,846
Net unrealized loss on available-for-sale investments, net of tax					(7)	(12)	(43)
Comprehensive net income (loss)					$ (4,985)	$ (6,201)	$ 3,803