Anuvu Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Common Stock, Share-based Awards and Warrants - Narrative (Details)

Common Stock, Share-based Awards and Warrants - Narrative (Details) - USD ($)			1 Months Ended			3 Months Ended			12 Months Ended
	Jul. 27, 2017	Jul. 27, 2016	Mar. 31, 2017	Aug. 31, 2016	Aug. 31, 2015	Jun. 30, 2018	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2014	Dec. 31, 2017	Dec. 21, 2017	Dec. 31, 2016	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount													$ 50,000,000.0
Stock repurchase program, remaining authorized amount							$ 44,800,000
Income recorded as a result of remeasurement							564,000	$ 2,920,000
Number of warrants authorized for repurchase									$ 25,000,000.0
Number of additional warrants authorized for repurchase					$ 20,000,000.0
Amount of available for warrants							$ 16,700,000
Equity Incentive Plan, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)												11,000,000
Equity Incentive Plan, 2013 \| Employee Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant											2,097,846
Equity Incentive Plan, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)											6,500,000
Public SPAC Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants outstanding							0			6,173,000
Common Stock \| UMG Recordings
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period, litigation (in shares)				1,800,000
Common Stock \| Emerging Markets Communications LLC
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period, acquisitions (in shares)	5,000,000	5,500,000
Price per share of stock issued during period, acquisitions	$ 8.40
Public Warrants \| Quotes prices in active markets (Level 1) \| Public SPAC Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants (in shares)			6,173,228					6,173,228
Price Per Share Scenario Two \| Common Stock \| UMG Recordings
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period, litigation (in shares)			400,000	400,000.0
Share price of common stock (in usd per share)			$ 12.00	$ 12				$ 12.00				$ 12.00
Price Per Share Scenario One \| Common Stock \| UMG Recordings
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period, litigation (in shares)			500,000	500,000.0
Share price of common stock (in usd per share)			$ 10.00	$ 10				$ 10.00				$ 10
Liability Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Change in value							$ 100,000	$ 400,000
Forecast \| Equity Incentive Plan, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized						2,000,000