Shareholders' Equity (Details) - USD ($)	3 Months Ended		8 Months Ended
	Jun. 18, 2019	Mar. 26, 2019	Sep. 08, 2020	Sep. 10, 2019	Jul. 23, 2018	Aug. 23, 2016	Feb. 26, 2016
Class of Stock [Line Items]
Shares repurchased, value	$ 3,067,000	$ 4,306,000
Common Stock and Warrants
Class of Stock [Line Items]
Maximum authorized stock repurchase amount (up to)					$ 75,000,000.0	$ 50,000,000.0	$ 25,000,000.0
Remaining authorized stock repurchase amount			$ 22,300,000
Common Stock
Class of Stock [Line Items]
Shares repurchased (in shares)				574,481
Average price per share (in dollars per share)				$ 10.17
Shares repurchased, value				$ 5,900,000
Warrants
Class of Stock [Line Items]
Shares repurchased (in shares)				846,441
Average price per share (in dollars per share)				$ 1.78
Shares repurchased, value			$ 1,500,000