Subsequent Events (Details)		6 Months Ended
	Aug. 10, 2021 USD ($) vote representative $ / shares shares	Jun. 30, 2021 USD ($) $ / shares	Jun. 30, 2020 USD ($)	Dec. 31, 2020 $ / shares
Subsequent Event [Line Items]
Preferred stock, par value (usd per share) | $ / shares		$ 0.001		$ 0.001
Common stock, par value (usd per share) | $ / shares		$ 0.001		$ 0.001
Repayment of long term line of credit		$ 31,075,000	$ 57,702,000
Subsequent event
Subsequent Event [Line Items]
Number of members eligible to be designated to board of directors | representative	1
Number of non-voting representatives designated to board of directors | representative	3
Percentage of variable weighted average price of common stock	95.00%
Subsequent event | Series A Perpetual Preferred Stock | Cash Regular Dividend Rate
Subsequent Event [Line Items]
Preferred stock dividend rate spread	2.00%
Percent of the amount of Default Accrued Dividends to be paid	100.00%
Dividend rate, percentage	5.75%
Subsequent event | Series A Perpetual Preferred Stock | Cash Regular Dividend Rate | Fifth, Sixth, and Seventh Anniversaries
Subsequent Event [Line Items]
Preferred stock dividend rate spread	0.50%
Subsequent event | Series A Perpetual Preferred Stock | Cash Regular Dividend Rate | Eighth, Ninth, and Tenth Anniversaries
Subsequent Event [Line Items]
Preferred stock dividend rate spread	1.00%
Subsequent event | Series A Perpetual Preferred Stock | Accrued Regular Dividend Rate
Subsequent Event [Line Items]
Dividend rate, percentage	6.25%
Subsequent event | Securities Purchase Agreement
Subsequent Event [Line Items]
Net proceeds	$ 346,000,000.0
Repayment of long term line of credit	$ 100,000,000
Number of votes per preferred share | vote	1
Subsequent event | Securities Purchase Agreement | Anniversary Date One
Subsequent Event [Line Items]
Purchase commitment, percentage	0.00%
Subsequent event | Securities Purchase Agreement | Anniversary Date Two
Subsequent Event [Line Items]
Purchase commitment, percentage	1.50%
Subsequent event | Securities Purchase Agreement | Anniversary Date Three
Subsequent Event [Line Items]
Purchase commitment, percentage	3.00%
Subsequent event | Securities Purchase Agreement | Series A Perpetual Preferred Stock
Subsequent Event [Line Items]
Stock issued (in shares) | shares	350,000
Preferred stock, par value (usd per share) | $ / shares	$ 0.001
Amount of liquidation preference	$ 100,000,000
Percentage of initial liquidation preference	130.00%
Initial liquidation preference (in dollars per share) | $ / shares	$ 1,000
Preferred stock, redemption amount	$ 200,000,000
Subsequent event | Securities Purchase Agreement | Common Stock
Subsequent Event [Line Items]
Stock issued (in shares) | shares	7,098,765
Common stock, par value (usd per share) | $ / shares	$ 0.001
Subsequent event | Securities Purchase Agreement, Expiry or Termination | Common Stock | BCP Helios Aggregator L.P.
Subsequent Event [Line Items]
Stock issued (in shares) | shares	776,235
Net proceeds	$ 776
Subsequent event | Securities Purchase Agreement, Additional Closings
Subsequent Event [Line Items]
Net proceeds	$ 148,000,000
Subsequent event | Securities Purchase Agreement, Additional Closings | Series A Perpetual Preferred Stock
Subsequent Event [Line Items]
Stock issued (in shares) | shares	150,000
Subsequent event | Securities Purchase Agreement, Additional Closings | Common Stock
Subsequent Event [Line Items]
Stock issued (in shares) | shares	3,375,000
Subsequent event | Securities Purchase Agreement, Additional Closings, Certain Pricing Adjustments | Common Stock
Subsequent Event [Line Items]
Stock issued (in shares) | shares	6,100,000
Subsequent event | Securities Purchase Agreement, Voting and Consent Rights
Subsequent Event [Line Items]
Maximum leverage ratio	8.5
Subsequent event | Securities Purchase Agreement, Voting and Consent Rights | Series A Perpetual Preferred Stock
Subsequent Event [Line Items]
Maximum leverage ratio	8.5