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Stock-Based Compensation - Additional Information (Details) - USD ($)					3 Months Ended			9 Months Ended
	Jan. 31, 2019	Sep. 15, 2018	Sep. 07, 2018	Sep. 05, 2018	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)								0
Payroll tax expense								$ 89,000	$ 376,000
Stock-based compensation expense (benefit), net of forfeitures								$ 531,000	(1,880,000)
Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (benefit), net of forfeitures							$ 400,000
2014 Restricted Stock Awards \| Former Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeited (in shares)				1,382,665
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares unvested (in shares)					976,950			976,950			1,092,450
Vested (in shares)								79,231
Weighted-average grant date fair value (in dollars per share)					$ 4.55			$ 4.55			$ 4.51
Restricted Stock \| 2014 Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period								10 years
Unamortized compensation expense					$ 400,000			$ 400,000
Shares unvested (in shares)					229,500			229,500
Restricted Stock \| 2014 Restricted Stock Awards \| Former Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (reversal of expense)							(2,400,000)
Restricted Stock \| 2014 Restricted Stock Awards \| Former Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares withheld for tax obligation (in shares)	36,269	32,962
Payroll tax expense						$ 100,000
Vested (in shares)	115,500	112,500
Restricted Stock \| 2018 Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares unvested (in shares)					500,000			500,000
Restricted Stock \| 2018 Restricted Stock Awards \| Former Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized compensation expense					$ 600,000			$ 600,000
Shares granted (in shares)				350,000
Shares withheld for tax obligation (in shares)				102,550
Payroll tax expense				$ 300,000
Shares unvested (in shares)				247,450
Restricted Stock \| 2018 Restricted Stock Awards \| Former Chief Executive Officer \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares unvested (in shares)										247,450
Restricted Stock \| Modified Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized compensation expense					$ 0.6			$ 0.6
Compensation expense (reversal of expense)						$ 100,000	$ 200,000
Vested (in shares)							79,538
Restricted Stock \| 2018 Modified Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares unvested (in shares)					247,450			247,450
Restricted Stock \| PWSC Restricted Stock Award \| Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized compensation expense					$ 700,000			$ 700,000
Compensation expense (reversal of expense)					$ 100,000		$ (2,500,000)	$ 500,000	$ (1,900,000)
Shares granted (in shares)			1,000
Shares unvested (in shares)					875			875
Weighted-average grant date fair value (in dollars per share)					$ 824.47			$ 824.47
Restricted Stock Units (RSUs) \| 2018 Restricted Stock Awards \| Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized compensation expense					$ 1,700,000			$ 1,700,000
Shares granted (in shares)				500,000