(Loss) Earnings Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Net income (loss) attributable to Providence	$ (6,058)	$ 8,154	$ (1,712)	$ 582	$ (20,350)	$ 7,154	$ (11,215)	$ 5,430	$ 966	$ (18,981)	$ 53,369
Less dividends on convertible preferred stock									(4,403)	(4,413)	(4,418)
Less income allocated to participating securities									0	(1,863)	(6,315)
Net income available to common stockholders									$ (3,437)	$ (25,257)	$ 42,636
Denominator:
Denominator for basic earnings per share -- weighted-average shares (in shares)									12,958,713	12,960,837	13,602,140
Effect of dilutive securities:
Denominator for diluted earnings per share -- adjusted weighted-average shares assumed conversion (in shares)									12,958,713	13,033,247	13,673,314
Basic (loss) earnings per share:
Continuing operations (in dollars per share)									$ (0.72)	$ 0.92	$ 2.99
Discontinued operations (in dollars per share)									0.46	(2.87)	0.15
Basic (in dollars per share)	$ (0.55)	$ 0.47	$ (0.22)	$ (0.04)	$ (1.67)	$ 0.41	$ (0.95)	$ 0.27	(0.26)	(1.95)	3.14
Diluted (loss) earnings per share:
Continuing operations (in dollars per share)									(0.72)	0.92	2.97
Discontinued operations (in dollars per share)									0.46	(2.86)	0.15
Diluted (in dollars per share)	$ (0.55)	$ 0.47	$ (0.22)	$ (0.04)	$ (1.67)	$ 0.40	$ (0.94)	$ 0.27	$ (0.26)	$ (1.94)	$ 3.12
Stock Options
Effect of dilutive securities:
Common stock options (in shares)									0	72,410	66,314
Performance Restricted Stock Units [Member]
Effect of dilutive securities:
Performance-based restricted stock units (in shares)									0	0	4,860
Continuing Operations
Numerator:
Net income available to common stockholders									$ (9,356)	$ 11,953	$ 40,647
Discontinued Operations
Numerator:
Net income available to common stockholders									$ 5,919	$ (37,210)	$ 1,989