Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2014		Dec. 31, 2013
Income Statement [Abstract]
Revenue	$ 26,874		$ 19,517		$ 74,459		$ 54,042
Cost of revenue	9,538		6,820		25,182		19,938
Gross margin	17,336		12,697		49,277		34,104
Operating expenses:
Selling, general and administrative	16,383		12,274		43,761		34,460
Research, technology and innovation	3,308		2,265		9,645		6,256
Total operating expenses	19,691		14,539		53,406		40,716
Loss from continuing operations	(2,355)		(1,842)		(4,129)		(6,612)
Other income, net	82		53		122		144
Loss from continuing operations before income taxes	(2,273)		(1,789)		(4,007)		(6,468)
Provision (benefit) for income taxes	377		(758)		743		(2,020)
Loss from continuing operations, net of income taxes	(2,650)		(1,031)		(4,750)		(4,448)
Income from discontinued operations, net of income taxes	332		665		988		2,228
Net loss	(2,318)		(366)		(3,762)		(2,220)
Net loss attributable to noncontrolling interest	(31)		(23)		(135)		(52)
Net loss attributable to Rentrak Corporation	$ (2,287)		$ (343)		$ (3,627)		$ (2,168)
Loss per share from continuing operations attributable to Rentrak Corporation common stockholders:
Basic (usd per share)	$ (0.19)		$ (0.08)		$ (0.36)		$ (0.36)
Diluted (usd per share)	$ (0.19)		$ (0.08)		$ (0.36)		$ (0.36)
Income per share from discontinued operations attributable to Rentrak Corporation common stockholders:
Basic (usd per share)	$ 0.02		$ 0.05		$ 0.08		$ 0.18
Diluted (usd per share)	$ 0.02		$ 0.05		$ 0.08		$ 0.18
Net loss per share attributable to Rentrak Corporation common stockholders:
Basic (usd per share)	$ (0.17)		$ (0.03)		$ (0.28)		$ (0.18)
Diluted (usd per share)	$ (0.17)		$ (0.03)		$ (0.28)		$ (0.18)
Shares used in per share calculations:
Basic (shares)	13,516	[1]	12,181	[1]	12,875	[1]	12,116	[1]
Diluted (shares)	13,516		12,181		12,875		12,116

[1] Includes 178,703 and 184,458 vested cumulative DSUs, respectively, for the three months ended December 31, 2014 and 2013 and 176,701 and 177,648 vested cumulative DSUs, respectively, for the nine months ended December 31, 2014 and 2013 that will not be issued until the directors holding the DSUs retire from our Board of Directors.