Redeemable Preferred Stocks - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Class Of Stock [Line Items]
Series E redeemable preferred - embedded derivative	$ 1,084,000	$ 1,642,000
Non-Operating Other Income [Member]
Class Of Stock [Line Items]
Unrealized gain on change in fair value of the embedded derivative	500,000	1,200,000
Other Noncurrent Accrued and Other Liabilities [Member]
Class Of Stock [Line Items]
Series E redeemable preferred - embedded derivative	$ 1,100,000	$ 1,600,000
Embedded Derivative [Member]
Class Of Stock [Line Items]
Participating right in dividends and liquidating distributions expressed in number of common shares	303,646	303,646
Embedded Derivative [Member] | Common Stock Shares [Member]
Class Of Stock [Line Items]
Common stock per share	$ 4.20	$ 5.52
Series E Redeemable Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock cumulative dividend rate	14.00%
Participating right in dividends and liquidating distributions expressed in number of common shares	303,646
Minimum percentage of stock holding required	10.00%
Liquidation preference per share	$ 1,000
Redeemable preferred stock, redemption term	The letter agreement also provided for the amendment of certain other terms relating to the Series E Redeemable Preferred, including an increase in the per annum dividend rate payable in respect of the Series E Redeemable Preferred as described above.
Preferred stock, shares authorized	139,768	139,768
Fees associated with letter agreement	$ 2,800,000
Bifurcation of embedded derivative	$ 300,000
Redemption date	Oct. 25, 2023
Series E Redeemable Preferred Stock [Member] | April 2021
Class Of Stock [Line Items]
Increase in preferred stock cumulative dividend rate	0.50%
Series E Redeemable Preferred Stock [Member] | April 2022
Class Of Stock [Line Items]
Increase in preferred stock cumulative dividend rate	0.50%
Series E Redeemable Preferred Stock [Member] | April 2023
Class Of Stock [Line Items]
Increase in preferred stock cumulative dividend rate	1.00%
Series B Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock cumulative dividend rate	12.00%	12.00%
Series D Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock cumulative dividend rate	6.00%	6.00%
Series F Redeemable Preferred Stock [Member]
Class Of Stock [Line Items]
Liquidation preference per share	$ 100
Preferred stock, shares authorized	1
Common stock voting rights shares	456,225
Voting rights description	The Series F COD authorizes one (1) shares of Series F Redeemable Preferred. As of December 31, 2019, the Series F Redeemable Preferred has voting rights (the “Series F Voting Rights”) to vote as a single class on all matters which the common stock have the right to vote and is entitled to a number of votes equal to 456,225 shares of our common stock.
Preferred stock redemption price per share	$ 0.01
Redeemable preferred voting rights	$ 0