Investments Investments (Details) - USD ($)	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	May 17, 2017	Mar. 14, 2017	Aug. 15, 2016
Investment [Line Items]
Maximum Investment in Veritone									$ 50,000,000
Secured Convertible Promissory Note									20,000,000
Secured Promissory Note Advance									$ 10,000,000
Time-sharing Transactions, Stated Interest Rate for Notes Receivable									6.00%
First Loan Warrant									$ 700,000
Debt Instrument, Convertible, Conversion Price							$ 13.6088
Loan receivable and accrued interest	$ 0			$ 0		$ 18,616,000	$ 20,736,000
Common stock, shares outstanding	50,597,449			50,597,449		50,476,042
Veritone Primary Warrant									$ 50,000,000
Cash paid for primary warrant exercise							$ 29,300,000
10% Warrant							809,400
Veritone Bridge Loan							$ 4,000,000	$ 4,000,000
Bridge loan stated interest rate								8.00%
Veritone Bridge Loan Advance 1								$ 1,000,000
Veritone Bridge Loan Advance 3 and 4								$ 2,000,000
Upfront Shares								60,000
Bridge Installment Shares								90,000
Bridge Warrant Share								157,000
Unamortized loan discount							$ 1,700,000
Accretion (Amortization) of Discounts and Premiums, Investments	$ 261,000			$ 630,000
Discount for lack of marketabiity	6.50%			6.50%			5.70%
Investments at fair value	$ 49,817,000			$ 49,817,000		$ 0
Gain on Conversion of Loan and Accrued Interest	2,671,000		$ 0	2,671,000	$ 0
Gain on exercise of warrant	4,616,000		0	4,616,000	0
Unrealized Gain (Loss) on Investments	(12,698,000)		0	(12,698,000)	0
Loss on fair value investment net				(5,411,000)
Assets, Current	136,633,000			136,633,000		188,490,000
Total assets	264,490,000			264,490,000		296,003,000
Current liabilities	18,666,000			18,666,000		28,191,000
Total liabilities	$ 19,243,000			$ 19,243,000		28,560,000
Cash Paid for Investment						2,250,000
Equity Method Investment, Ownership Percentage	23.00%			23.00%
Income (Loss) from Equity Method Investments	$ 14,000		$ 0	$ 14,000	$ 0
Minimum [Member]
Investment [Line Items]
Receivable with Imputed Interest, Effective Yield (Interest Rate)				9.00%
Maximum [Member]
Investment [Line Items]
Fair Value Assumptions, Expected Volatility Rate				50.00%
Fair Value Inputs, Probability of Default				75.00%
Fair value inputs recovery				100.00%
Receivable with Imputed Interest, Effective Yield (Interest Rate)				53.00%
Veritone [Member]
Investment [Line Items]
Investment Income, Interest	172,000			$ 471,000
Revenues		$ 3,108,000
Gross Profit		2,912,000
Operating Expenses		9,543,000
Other Operating Income (Expense), Net		786,000
Net Income (Loss) Available to Common Stockholders, Diluted		$ (6,920,000)
Earnings Per Share, Basic		$ (3,090)
Assets, Current		$ 24,514,000				21,367,000
Noncurrent assets		1,830,000				981,000
Total assets		26,344,000				22,348,000
Current liabilities		51,339,000				44,501,000
Noncurrent liabilities		22,000				22,000
Total liabilities		51,361,000				44,523,000
Total liabilities, preferred stock and stockholders' equity		$ 26,344,000				$ 22,348,000
Common Stock [Member]
Investment [Line Items]
Investments at fair value	45,104,000			45,104,000
Unrealized Gain (Loss) on Investments				11,769,000
Warrant [Member]
Investment [Line Items]
Investments at fair value	$ 4,713,000			4,713,000
Unrealized Gain (Loss) on Investments				$ 929,000
Veritone Loans [Member] | Veritone [Member]
Investment [Line Items]
Common stock, shares outstanding							1,523,746
Primary warrant [Member] | Veritone [Member]
Investment [Line Items]
Common stock, shares outstanding							2,150,335
Bridge Loan [Member] | Veritone [Member]
Investment [Line Items]
Common stock, shares outstanding							295,440
Monte Carlo [Member] | Minimum [Member]
Investment [Line Items]
Fair Value Assumptions, Expected Volatility Rate				40.00%
Fair Value Inputs, Probability of Default				25.00%
Fair Value Inputs, Discount for Lack of Marketability				7.00%
Finnerty [Member] | Minimum [Member]
Investment [Line Items]
Fair Value Assumptions, Expected Volatility Rate				35.00%
Finnerty [Member] | Maximum [Member]
Investment [Line Items]
Fair Value Assumptions, Expected Volatility Rate				40.00%
Black Scholes [Member]
Investment [Line Items]
Fair Value Assumptions, Expected Dividend Payments				$ 0
Black Scholes [Member] | Minimum [Member]
Investment [Line Items]
Fair Value Assumptions, Expected Volatility Rate				40.00%
Fair Value Assumptions, Risk Free Interest Rate				1.55%
Fair Value Assumptions, Expected Term				3 years
Black Scholes [Member] | Maximum [Member]
Investment [Line Items]
Fair Value Assumptions, Expected Volatility Rate				55.00%
Fair Value Assumptions, Risk Free Interest Rate				2.31%
Fair Value Assumptions, Expected Term				10 years