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Refers to the amount of increase (decrease) in quarterly exit fee payable.

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Amount of the fee paid to agent for borrowing money under the debt instrument.

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Amount of debt incurred fee and issuance costs related to the issuance of the credit agreement.

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Total number of share held by Chief executive officer of the company.

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Prepayment price percentage of the principal amount for the period.

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Prepayment price percentage of the principal amount for the specific period.

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Warrants Acquired, Average Cost Per Share

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Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Face amount or stated value per share of common stock.

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Amount of the fee that accompanies borrowing money under the debt instrument.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Incremental percentage increase (decrease) in the stated rate on a debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of increase (decrease) of the credit facility.

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The cash outflow to reacquire common stock during the period.

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The aggregate amount paid by the entity to reacquire the right to purchase equity shares at a predetermined price, usually issued together with corporate debt.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Current Liabilities and Debt Obligations - Enlightenment Capital Credit Agreement (Details) $ / shares in Units, $ in Thousands							3 Months Ended	6 Months Ended
	Apr. 19, 2021 USD ($) $ / shares shares	Nov. 24, 2020 USD ($)	Mar. 26, 2020 USD ($) maturity_date_extension	Jul. 19, 2019 USD ($)	Mar. 30, 2018 qtr shares	Jan. 25, 2017 USD ($) $ / shares shares	Jun. 30, 2020 USD ($) $ / shares	Jun. 30, 2021 USD ($) $ / shares	Jun. 30, 2020 USD ($) $ / shares	Dec. 31, 2020 $ / shares	Jul. 18, 2019 USD ($)
Debt Instrument [Line Items]
Class of warrant or right, exercise price of warrants or rights (in dollars per share) \| $ / shares							$ 1.665	$ 1.665	$ 1.665
Payments for repurchase of warrants								$ 26,894	$ 0
Payments for repurchase of common stock								$ 1,251	0
Common stock, par or stated value per share (in dollars per share) \| $ / shares	$ 0.001							$ 0.001		$ 0.001
Credit Agreement
Debt Instrument [Line Items]
Debt instrument, fee amount		$ 1,200				$ 825
Debt instrument, interest rate, effective percentage						15.00%
Credit agreement transaction costs						$ 374
Increase in interest rate					1.00%
Number of consecutive quarters \| qtr					2
Interest expense							$ 700		$ 1,500
Repayments of senior debt		17,400
Interest payable, current		138
Legal fees		$ 13
Enlightenment Capital Solutions Fund, II L.P.
Debt Instrument [Line Items]
Long-term line of credit				$ 16,000
Debt instrument, fee amount				$ 1,200							$ 825
Debt instrument, interest rate, effective percentage				17.30%
Line of credit facility, increase (decrease), net				$ 5,000
Prepayment price percentage for January 26, 2019 to January 25, 2020				102.00%
Prepayment price percentage for January 26, 2020 to October 14, 2020				101.00%
Agent fee				$ 110
Number of quarterly maturity date extensions \| maturity_date_extension			4
Amount of increase in quarterly exit fee payable			$ 250
Amount of increase in exit fee payable			1,000
Amendment fee and out-of-pocket costs and expenses			$ 100
Warrants repurchased during period (in shares) \| shares	900,970
Stock repurchased during period (in shares) \| shares	39,682
Payments for repurchase of warrants	$ 26,900
Payments for repurchase of common stock	$ 1,300
Sale of warrants, price per share (in dollars per share) \| $ / shares	$ 29.85
Treasury stock acquired, average cost per share (in dollars per share) \| $ / shares	$ 31.51
Enlightenment Capital Solutions Fund, II L.P. \| Common Class A
Debt Instrument [Line Items]
Class of warrant or right, number of securities called by warrants or rights (in shares) \| shares						900,970
Percentage of warrants issued of common equity interests						2.50%
Class of warrant or right, exercise price of warrants or rights (in dollars per share) \| $ / shares						$ 1.665
Emmett J. Wood \| Common Class A \| Credit Agreement
Debt Instrument [Line Items]
Number of shares held by chief executive officer (in shares) \| shares					50,000
Term Loan \| Enlightenment Capital Solutions Fund, II L.P.
Debt Instrument [Line Items]
Long-term line of credit						$ 11,000
Debt instrument, interest rate, stated percentage						13.00%