Principal re-payments period under the Term Loan.

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Line of credit facility option to increase borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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No definition available.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations related to ancillary services.

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No definition available.

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 505
-SubTopic 10
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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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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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- Definition

Amount of expense (income) related to adjustment to fair value of warrant liability.

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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 fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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No definition available.

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- Definition

Date the credit facility terminates, in YYYY-MM-DD format.

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The effective interest rate at the end of the reporting period.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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Expiration date of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in YYYY-MM-DD format.

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Current and Long-Term Debt and Capital Lease Obligation, Loan Agreement and Credit Agreement (FY) (Details) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Jan. 17, 2020	Oct. 19, 2017	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 12, 2021	Aug. 31, 2017	Jul. 31, 2014
Loan Agreement and Credit Agreement [Abstract]
Exercise price (in dollars per share)			$ 1.91			$ 11.50
Change in fair value of warrants liability			$ (926)	$ (12)	$ (54)
Letters of credit outstanding, amount	$ 2,854						$ 2,725
PacWest Bank Loan Agreement [Member]
Loan Agreement and Credit Agreement [Abstract]
Change in fair value of warrants liability			(926)	(12)	$ (54)
PacWest Bank Credit Agreement [Member]
Loan Agreement and Credit Agreement [Abstract]
Maximum borrowing capacity		$ 40,000
Increase in borrowing capacity option		$ 50,000
Term loan maturity date	Jan. 17, 2025
Percentage of commitment fee payable		0.25%
Line of credit facility for ancillary services		$ 5,000
Letters of credit outstanding, amount	$ 3,154		$ 3,104	$ 3,185
PacWest Bank Credit Agreement [Member] \| Revolving Credit Facility [Member]
Loan Agreement and Credit Agreement [Abstract]
Maximum borrowing capacity		$ 40,000
Credit facility maturity date			Oct. 31, 2020
Interest rate				5.75%
PacWest Bank Credit Agreement [Member] \| Prime Rate [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Loan Agreement and Credit Agreement [Abstract]
Variable interest rate		1.00%
PacWest Bank Credit Agreement [Member] \| Prime Rate [Member] \| Revolving Credit Facility [Member] \| Minimum [Member]
Loan Agreement and Credit Agreement [Abstract]
Variable interest rate		0.75%
PacWest Bank Credit Agreement [Member] \| Term Loan [Member]
Loan Agreement and Credit Agreement [Abstract]
Term Loan		$ 10,000
Term loan maturity date			Oct. 18, 2021
Principal payment period			36 months
Interest rate				6.00%
PacWest Bank Credit Agreement [Member] \| Term Loan [Member] \| Prime Rate [Member] \| Maximum [Member]
Loan Agreement and Credit Agreement [Abstract]
Variable interest rate		1.25%
PacWest Bank Credit Agreement [Member] \| Term Loan [Member] \| Prime Rate [Member] \| Minimum [Member]
Loan Agreement and Credit Agreement [Abstract]
Variable interest rate		1.00%
PacWest Bank [Member]
Loan Agreement and Credit Agreement [Abstract]
Warrants issued (in shares)								105,005
Exercise price (in dollars per share)								$ 1.91
Expiration date			Jul. 10, 2024