Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Income Statement [Abstract]
Revenue	$ 25,241		$ 17,843		$ 47,585		$ 34,525
Cost of revenue	8,040		6,829		15,644		13,118
Gross margin	17,201		11,014		31,941		21,407
Operating expenses:
Selling, general and administrative	14,544		11,332		27,378		22,186
Research, technology and innovation	3,073		2,121		6,337		3,991
Total operating expenses	17,617		13,453		33,715		26,177
Loss from continuing operations	(416)		(2,439)		(1,774)		(4,770)
Other income, net	20		44		40		91
Loss from continuing operations before income taxes	(396)		(2,395)		(1,734)		(4,679)
Provision (benefit) for income taxes	337		(937)		365		(1,262)
Loss from continuing operations, net of income taxes	(733)		(1,458)		(2,099)		(3,417)
Income from discontinued operations, net of income taxes	308		802		655		1,563
Net loss	(425)		(656)		(1,444)		(1,854)
Net loss attributable to noncontrolling interest	(51)		(22)		(104)		(29)
Net loss attributable to Rentrak Corporation	$ (374)		$ (634)		$ (1,340)		$ (1,825)
Loss per share from continuing operations attributable to Rentrak Corporation common stockholders:
Basic (usd per share)	$ (0.06)		$ (0.12)		$ (0.16)		$ (0.28)
Diluted (usd per share)	$ (0.06)		$ (0.12)		$ (0.16)		$ (0.28)
Income per share from discontinued operations attributable to Rentrak Corporation common stockholders:
Basic (usd per share)	$ 0.03		$ 0.07		$ 0.05		$ 0.13
Diluted (usd per share)	$ 0.03		$ 0.07		$ 0.05		$ 0.13
Net loss per share attributable to Rentrak Corporation common stockholders:
Basic (usd per share)	$ (0.03)		$ (0.05)		$ (0.11)		$ (0.15)
Diluted (usd per share)	$ (0.03)		$ (0.05)		$ (0.11)		$ (0.15)
Shares used in per share calculations:
Basic (shares)	12,514	[1]	12,104	[1]	12,529	[1]	12,083	[1]
Diluted (shares)	12,514		12,104		12,529		12,083

[1] Includes 177,569 and 178,302 vested cumulative DSUs, respectively, for the three months ended September 30, 2014 and 2013 and 174,496 and 174,228 vested cumulative DSUs, respectively, for the six months ended September 30, 2014 and 2013 that will not be issued until the directors holding the DSUs retire from our Board of Directors.