Subsequent Event (Details) - $ / shares	Aug. 03, 2020	Aug. 02, 2020	Jul. 31, 2020	Jan. 31, 2020
Subsequent Event [Line Items]
Common stock, shares authorized (in shares)			40,000,000	40,000,000
Preferred stock, shares authorized (in shares)			2,000,000	2,000,000
Preferred stock, par value (in usd per share)			$ 1.00	$ 1.00
Subsequent Event
Subsequent Event [Line Items]
Capital stock, shares authorized (in shares)	42,000,000	21,000,000
Common stock, shares authorized (in shares)	40,000,000	20,000,000
Preferred stock, shares authorized (in shares)	2,000,000	1,000,000
Preferred stock, par value (in usd per share)	$ 1.00