Debt Instrument, Accordion Feature, Increase Limit

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- Definition

Debt Instrument, Convertible, Conversion Price, Percentage Premium Of Trading Price

+ References

No definition available.

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- Definition

Debt Instrument, Covenant Terms, Minimum Cash Balance

+ References

No definition available.

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- Definition

Debt Instrument, Shares Repurchased

+ References

No definition available.

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- Definition

Debt Instrument, Shares Repurchased, Value

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- Definition

Debt Instrument, Unamortized Discount At Inception

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No definition available.

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- Definition

Sale Leaseback Transaction, Proceeds From The Failed Sale Of The Assets

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No definition available.

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- Definition

Sale Leaseback Transaction, Term Of Contract

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No definition available.

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- Definition

Sale Leaseback Transaction, Total Consideration

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No definition available.

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

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- Definition

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

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- Definition

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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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

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

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- Definition

Amount of the required periodic payments applied to interest.

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

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-Name Accounting Standards Codification
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-SubTopic 20
-Section 45
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-Subparagraph (b)
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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.

+ References

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- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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- Definition

The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

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- Definition

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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No definition available.

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- Definition

Price of a single share of a number of saleable stocks of a company.

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No definition available.

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Long-term Debt (Narrative) (Details)					1 Months Ended	3 Months Ended		12 Months Ended
Long-term Debt (Narrative) (Details)	Apr. 01, 2020 USD ($)	Jan. 02, 2020 USD ($)	May 17, 2018 USD ($) $ / shares shares	Jan. 16, 2018 USD ($) day $ / shares shares	Jun. 30, 2019 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jan. 30, 2020	Dec. 31, 2019 USD ($)	Aug. 06, 2019 USD ($)	Apr. 03, 2019 shares	Jan. 31, 2019
Schedule of Capitalization, Long-term Debt [Line Items]
Amortization of deferred issuance costs						$ 348,000	$ 252,000
Accretion of debt discount						1,769,000	1,319,000
Wells Fargo Bank, N.A. \| Letter of credit
Schedule of Capitalization, Long-term Debt [Line Items]
Letters of credit outstanding						3,300,000
Convertible senior notes
Schedule of Capitalization, Long-term Debt [Line Items]
Face value of note						204,000,000				$ 204,000,000
Amortization of deferred issuance costs						300,000	300,000
Accretion of debt discount						1,800,000	$ 1,300,000
Convertible senior notes \| Level 3
Schedule of Capitalization, Long-term Debt [Line Items]
Fair value of notes						162,400,000
Convertible senior notes \| Initial Notes, due January 16, 2022
Schedule of Capitalization, Long-term Debt [Line Items]
Face value of note						$ 153,500,000				$ 153,500,000
Stated interest rate						12.00%				12.00%
Convertible senior notes \| Option Notes, due January 16, 2022
Schedule of Capitalization, Long-term Debt [Line Items]
Face value of note						$ 50,500,000				$ 50,500,000
Stated interest rate						12.00%				12.00%
Convertible senior notes \| Starboard Value LP \| Initial Notes, due January 16, 2022
Schedule of Capitalization, Long-term Debt [Line Items]
Face value of note				$ 150,000,000.0
Cash proceeds				$ 85,000,000.0
Repurchased shares (in shares) \| shares				2,600,000
Repurchased shares value				$ 65,000,000.0
Share price (in dollars per share) \| $ / shares				$ 24.45
Debt issuance discount at inception of notes				$ 1,400,000
Right to increase borrowing				$ 50,000,000.0
Number of shares callable by warrants (in shares) \| shares				250,000								323,448
Price of warrants (in dollars per share) \| $ / shares				$ 0.01
Conversion price, percentage premium of trading price				30.00%
Conversion threshold, consecutive trading days \| day				10
Conversion price (in dollars per share) \| $ / shares				$ 31.29
Stated interest rate													6.00%
Interest paid		$ 6,100,000
Accrued interest liability						$ 6,100,000
Convertible senior notes \| Starboard Value LP \| Initial Notes, due January 16, 2022 \| Minimum
Schedule of Capitalization, Long-term Debt [Line Items]
Conversion price (in dollars per share) \| $ / shares				$ 28.00
Stated interest rate				4.00%
Convertible senior notes \| Starboard Value LP \| Initial Notes, due January 16, 2022 \| Maximum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate				12.00%					12.00%				12.00%
Convertible senior notes \| Starboard Value LP \| Initial Notes
Schedule of Capitalization, Long-term Debt [Line Items]
Face value of note								$ 204,000,000.0
Cash proceeds								$ 100,000,000.0
Convertible senior notes \| Starboard Value LP \| Option Notes, due January 16, 2022
Schedule of Capitalization, Long-term Debt [Line Items]
Face value of note			$ 50,000,000.0
Cash proceeds			$ 15,000,000.0
Repurchased shares (in shares) \| shares			1,400,000
Repurchased shares value			$ 35,000,000.0
Share price (in dollars per share) \| $ / shares			$ 21.75
Debt issuance discount at inception of notes			$ 4,600,000
Secured Term Note \| Secured Term Note
Schedule of Capitalization, Long-term Debt [Line Items]
Face value of note						$ 13,000,000				$ 13,000,000.0
Stated interest rate						9.75%				9.75%
Debt instrument, debt covenant, minimum cash balance										$ 14,800,000
Amortization of deferred issuance costs						$ 100,000
Secured Term Note \| Secured Term Note \| Level 3
Schedule of Capitalization, Long-term Debt [Line Items]
Fair value of notes						15,200,000
Debt covenant, period two \| Convertible senior notes \| Starboard Value LP \| Initial Notes
Schedule of Capitalization, Long-term Debt [Line Items]
Debt instrument, debt covenant, minimum cash balance											$ 40,000,000.0
Failed Sale Leaseback Transaction
Schedule of Capitalization, Long-term Debt [Line Items]
Sale leaseback transaction, proceeds from the failed sale of the assets					$ 4,300,000
Sale leaseback transaction, term of contract					24 months
Sale leaseback transaction, total consideration					$ 4,800,000
Current financing lease liability						1,900,000
Non-current financing lease liability						$ 1,200,000
Subsequent event \| Convertible senior notes \| Starboard Value LP \| Initial Notes, due January 16, 2022
Schedule of Capitalization, Long-term Debt [Line Items]
Interest paid	$ 6,100,000