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The aggregate value of preferred stock dividends and other adjustments necessary to derive net income apportioned to common stockholders.

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Preferred and Common Stock - Additional Information (Details)			2 Months Ended	12 Months Ended
	Feb. 22, 2019 $ / shares shares	Jul. 02, 2018 USD ($) $ / shares shares	Feb. 22, 2019 shares	Dec. 31, 2020 USD ($) Vote $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Mar. 07, 2018 $ / shares	May 01, 2015 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Issued				14,630,813	14,630,813
Preferred Stock, Shares Outstanding				14,630,813	14,630,813
Preferred stock dividend for the period \| $				$ 6,015,000	$ 5,128,000	$ 0
Common Stock, Shares, Outstanding				99,294,743	98,903,243
Common stock vote per share \| Vote				1
Share-based compensation arrangement by share-based payment award, options, exercises in period				401,500
Share-based compensation arrangements by share-based payment award, options, exercises in period, weighted average exercise price \| $ / shares				$ 4.98
Proceeds from stock options exercised \| $						3,000
Common Stock, Par or Stated Value Per Share \| $ / shares				$ 0.001	$ 0.001		$ 0.001
- Proceeds from issuance of common stock, net of share issuance costs \| $				$ 1,999,000	$ 0	$ 85,304,000
Private Placement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of new shares		11,800,000
Common Stock, Par or Stated Value Per Share \| $ / shares		$ 7.35
- Proceeds from issuance of common stock, net of share issuance costs \| $		$ 85,299
Net proceeds, after deducting offering expenses \| $		$ 1,431,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period, shares, restricted stock award, forfeited				10,000	27,000	51,500
Common Stock, Par or Stated Value Per Share \| $ / shares								$ 0.001
Series B Convertible Preferred Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Each preferred share is convertible into common share	1		1
Preferred shares, dividend payment terms	Until the Preferred Shares are converted into common shares (or until the Preferred Shares are listed on a nationally recognized securities exchange), they will earn a preferred dividend equal to $0.41 per share per annum, payable quarterly in arrears.
Preferred dividend per share, per annum \| $ / shares	$ 0.41
Preferred Stock, Shares Outstanding				14,630,813
Preferred stock dividend for the period \| $				$ 6,015,000
Common Stock \| Range Of Exercise Prices Dollars 2.37
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, options, exercises in period						1,219
Share-based compensation arrangements by share-based payment award, options, exercises in period, weighted average exercise price \| $ / shares						$ 2.37
Common Stock \| Range Of Exercise Prices Dollars 4.98
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, options, exercises in period				401,500	13,500	107,822
Share-based compensation arrangements by share-based payment award, options, exercises in period, weighted average exercise price \| $ / shares				$ 4.98	$ 4.98	$ 4.98
Common Stock \| Cashless excisable.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, options, exercises in period						156,300
Rights Agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding rights held by shareholders valid	42,400,000
Issuance of new shares			14,630,813
Rights Agreement \| Series B Convertible Preferred Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of new shares	14,630,813
Rights Agreement \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of new shares	27,777,341