Equity (Deficit)- Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions								5 Months Ended	6 Months Ended
	Mar. 30, 2020	Mar. 03, 2020	Dec. 18, 2019	Nov. 05, 2019	Sep. 18, 2019	Aug. 06, 2019	May 04, 2017	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2020	Aug. 05, 2019	Dec. 21, 2018
Equity And Distributions [Line Items]
Common stock, shares authorized								250,000,000		250,000,000
Common stock, par value								$ 0.01		$ 0.01
Warrants outstanding								9,153,522		2,173,913
Warrant expiry date											Apr. 21, 2020
Treasury shares outstanding								0		0
Stock repurchase authorized amount						$ 25.0
Shares repurchased during period								4,195,247
Average common stock price								$ 6.28
Total cost of share repurchase								$ 24.9
Dividend declared date		Mar. 03, 2020		Nov. 05, 2019		Aug. 06, 2019
Dividends declared per share		$ 0.10		$ 0.20		$ 0.20
Dividends paid	$ 3.8		$ 7.7		$ 8.2
Dividend payable record date		Mar. 16, 2020		Dec. 04, 2019		Sep. 04, 2019
Warrants [Member]
Equity And Distributions [Line Items]
Warrant life period							5 years
Percentage of common shares to be issued upon exercise of warrants							8.00%
Warrant issued during period							2,173,913
Warrant exercise price							$ 42.60
Third Lien Notes Warrants [Member]
Equity And Distributions [Line Items]
Warrant exercise price											$ 22.78
Warrants outstanding											4,647,520
Unsecured Creditor Warrants [Member]
Equity And Distributions [Line Items]
Warrant exercise price											$ 43.67
Warrants outstanding											2,332,089
Midstates [Member]
Equity And Distributions [Line Items]
Treasury shares outstanding											205,861
Common Stock [Member]
Equity And Distributions [Line Items]
Stock repurchase authorized amount												$ 25.0
Shares repurchased during period									169,400
Average common stock price									$ 7.35
Total cost of share repurchase									$ 1.3