Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Revenue		$ 32,802	$ 25,241	$ 60,331	$ 47,585
Cost of revenue		10,034	8,040	19,927	15,644
Gross margin		22,768	17,201	40,404	31,941
Operating expenses:
Selling, general and administrative		16,415	14,544	28,075	27,378
Research, technology and innovation		4,666	3,073	8,645	6,337
Total operating expenses		21,081	17,617	36,720	33,715
Income (loss) from continuing operations		1,687	(416)	3,684	(1,774)
Other income, net		197	20	348	40
Income (loss) from continuing operations before income taxes		1,884	(396)	4,032	(1,734)
Provision for income taxes		636	337	1,289	365
Income (loss) from continuing operations, net of income taxes		1,248	(733)	2,743	(2,099)
Income from discontinued operations, net of income taxes		0	308	0	655
Net income (loss)		1,248	(425)	2,743	(1,444)
Net loss attributable to noncontrolling interest		(56)	(51)	(129)	(104)
Net income (loss) attributable to Rentrak Corporation		$ 1,304	$ (374)	$ 2,872	$ (1,340)
Income (loss) per share from continuing operations attributable to Rentrak Corporation common stockholders:
Basic (usd per share)		$ 0.08	$ (0.06)	$ 0.19	$ (0.16)
Diluted (usd per share)		0.08	(0.06)	0.18	(0.16)
Income per share from discontinued operations attributable to Rentrak Corporation common stockholders:
Basic (usd per share)		0.00	0.03	0.00	0.05
Diluted (usd per share)		0.00	0.03	0.00	0.05
Net income (loss) per share attributable to Rentrak Corporation common stockholders:
Basic (usd per share)		0.08	(0.03)	0.19	(0.11)
Diluted (usd per share)		$ 0.08	$ (0.03)	$ 0.18	$ (0.11)
Shares used in per share calculations:
Basic (shares)	[1]	15,541	12,514	15,501	12,529
Diluted (shares)		16,354	12,514	16,379	12,529

[1] Includes 192,118 and 177,569 vested cumulative DSUs, respectively, for the three months ended September 30, 2015 and 2014 and 190,325 and 174,496 vested cumulative DSUs, respectively, for the six months ended September 30, 2015 and 2014 that will not be issued until the directors holding the DSUs retire from our Board of Directors.