Mezzanine and Stockholders' Equity - Warrants (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Class of Warrant or Right [Line Items]
Weighted Average Exercise Price Per Share (in dollars per share)	$ 10.39	$ 9.96	$ 9.93	$ 9.75
Warrant Exercise Price Range One
Class of Warrant or Right [Line Items]
Exercise Price Per Share (in dollars per share)	$ 9.00
Warrants Outstanding (in shares)	10,810
Weighted Average Remaining Contractual Life	2 months 26 days
Warrants Exercisable (in shares)	10,810
Weighted Average Exercise Price Per Share (in dollars per share)	$ 9.00
Warrant Exercise Price Range Two
Class of Warrant or Right [Line Items]
Exercise Price Per Share (in dollars per share)	$ 10.00
Warrants Outstanding (in shares)	1,115,342
Weighted Average Remaining Contractual Life	1 year 5 months 8 days
Warrants Exercisable (in shares)	1,115,342
Weighted Average Exercise Price Per Share (in dollars per share)	$ 10.00
Warrant Exercise Price Range Three
Class of Warrant or Right [Line Items]
Exercise Price Per Share (in dollars per share)	$ 11.00
Warrants Outstanding (in shares)	751,974
Weighted Average Remaining Contractual Life	1 year 11 months 4 days
Warrants Exercisable (in shares)	751,974
Weighted Average Exercise Price Per Share (in dollars per share)	$ 11.00
Warrant Exercise Price Range Four
Class of Warrant or Right [Line Items]
Warrants Outstanding (in shares)	1,878,126
Weighted Average Remaining Contractual Life	1 year 7 months 17 days
Warrants Exercisable (in shares)	1,878,126
Weighted Average Exercise Price Per Share (in dollars per share)	$ 10.39
Warrant Exercise Price Range Four | Minimum
Class of Warrant or Right [Line Items]
Exercise Price Per Share (in dollars per share)	9.00
Warrant Exercise Price Range Four | Maximum
Class of Warrant or Right [Line Items]
Exercise Price Per Share (in dollars per share)	$ 11.00