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Investments Investments (Details) - USD ($) |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
May 17, 2017 | Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017 | Mar. 14, 2017 | Aug. 15, 2016
Investment [Line Items] |  |  |  |  |  |
Investment in Miso Robotics |  | $ 6,000,000 |  | $ 2,250,000 |  |
Percentage of ownership, Miso Robotics |  | 30.00% |  | 22.60% |  |
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 | $ 20,700,000 |  |  |  |  |
Common stock, shares outstanding |  | 50,647,882 |  | 50,639,926 |  |
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 |
Interest Income, Other |  |  | $ 1,000,000 |  |  |
Accretion (Amortization) of Discounts and Premiums, Investments |  |  | 369,000 |  |  |
Percentage of ownership, Veritone | 20.00% |  |  |  |  |
Investments at fair value |  | $ 63,657,000 |  | $ 104,754,000 |  |
Revenues |  | 62,093,000 | $ 8,854,000 |  |  |
Assets, Current |  | 188,203,000 |  | 139,695,000 |  |
Total assets |  | 317,835,000 |  | 308,768,000 |  |
Current liabilities |  | 48,977,000 |  | 9,557,000 |  |
Total liabilities |  | 50,782,000 |  | 13,109,000 |  |
Stockholders' Equity Attributable to Parent |  | $ 265,460,000 |  | 294,301,000 |  |
Equity Method Investment, Ownership Percentage |  | 23.00% |  |  |  |
Cumulative Unrealized Gain (Loss) Since Inception |  | $ 8,429,000 |  |  |  |
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) |  |  | 48.00% |  |  |
Veritone [Member] |  |  |  |  |  |
Investment [Line Items] |  |  |  |  |  |
Investment Income, Interest |  | $ 21,000 |  |  |  |
Revenues |  |  |  | 14,413,000 |  |
Gross Profit |  |  |  | 1,070,000 |  |
Operating Expenses |  |  |  | 60,105,000 |  |
Other Operating Income (Expense), Net |  |  |  | (12,833,000) |  |
Net Income (Loss) Available to Common Stockholders, Diluted |  |  |  | $ (64,071,000) |  |
Earnings Per Share, Basic |  |  |  | $ (6,200) |  |
Assets, Current |  |  |  | $ 83,805,000 |  |
Noncurrent assets |  |  |  | 4,753,000 |  |
Total assets |  |  |  | 88,558,000 |  |
Current liabilities |  |  |  | 27,256,000 |  |
Noncurrent liabilities |  |  |  | 0 |  |
Total liabilities |  |  |  | 27,256,000 |  |
Preferred Stock, Value, Outstanding |  |  |  | 0 |  |
Stockholders' Equity Attributable to Parent |  |  |  | 61,302,000 |  |
Total liabilities, preferred stock and stockholders' equity |  |  |  | $ 88,558,000 |  |
Common Stock [Member] |  |  |  |  |  |
Investment [Line Items] |  |  |  |  |  |
Investment Owned, Balance, Shares |  |  |  | 4,119,521 |  |
Investments at fair value |  | 57,345,000 |  |  |  |
Warrant [Member] |  |  |  |  |  |
Investment [Line Items] |  |  |  |  |  |
Investment Owned, Balance, Shares |  |  |  | 1,120,432 |  |
Investments at fair value |  | $ 6,312,000 |  |  |  |
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 |  |  |  |  |
Finnerty - Common Stock [Member] |  |  |  |  |  |
Investment [Line Items] |  |  |  |  |  |
Fair Value Assumptions, Expected Volatility Rate | 35.00% | 0.00% |  | 37.00% |  |
Fair Value Inputs, Discount for Lack of Marketability | 6.00% | 0.00% |  | 5.00% |  |
Fair Value Assumptions, Expected Term | 6 months | 0 months |  | 2 months |  |
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] |  |  |  |  |  |
Investment [Line Items] |  |  |  |  |  |
Fair Value Inputs, Discount for Lack of Marketability |  | 30.00% |  |  |  |
Fair Value Assumptions, Expected Term |  | 4 years 1 month |  |  |  |
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 |  | 50.00% |  |  |  |
Fair Value Assumptions, Risk Free Interest Rate |  | 2.30% |  |  |  |
Fair Value Assumptions, Expected Term |  | 2 years |  |  |  |
Black Scholes [Member] | Maximum [Member] |  |  |  |  |  |
Investment [Line Items] |  |  |  |  |  |
Fair Value Assumptions, Expected Volatility Rate |  | 55.00% |  |  |  |
Fair Value Assumptions, Risk Free Interest Rate |  | 2.70% |  |  |  |
Fair Value Assumptions, Expected Term |  | 9 years |  |  |  |
Finnerty - Warrants [Member] |  |  |  |  |  |
Investment [Line Items] |  |  |  |  |  |
Fair Value Assumptions, Expected Volatility Rate | 35.00% |  |  |  |  |
Fair Value Inputs, Discount for Lack of Marketability | 6.00% |  |  | 10.00% |  |
Fair Value Assumptions, Expected Term | 6 months | 5 months |  | 5 months |  |
Finnerty - Warrants [Member] | Minimum [Member] |  |  |  |  |  |
Investment [Line Items] |  |  |  |  |  |
Fair Value Assumptions, Expected Volatility Rate |  | 51.00% |  | 72.00% |  |
Fair Value Inputs, Discount for Lack of Marketability |  | 5.00% |  |  |  |
Finnerty - Warrants [Member] | Maximum [Member] |  |  |  |  |  |
Investment [Line Items] |  |  |  |  |  |
Fair Value Assumptions, Expected Volatility Rate |  | 91.00% |  | 87.00% |  |
Fair Value Inputs, Discount for Lack of Marketability |  | 15.00% |  |  |  |

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- Definition The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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