Stockholders' Equity (Deficit) - Cash Dividend (Details) - USD ($)					3 Months Ended
	Jul. 01, 2019	May 24, 2019	May 13, 2019	Apr. 30, 2019	Mar. 31, 2019	Apr. 01, 2018
Cash Dividend
Total dividends paid					$ 9,100,000
Dividends paid to common shareholders					$ 7,125,000	$ 7,565,000
Quarterly dividend paid per common share (in dollars per share)					$ 0.225
Common stock dividends paid to preferred shareholders					$ 900,000
Preferred dividends					$ 1,100,000
Preferred stock dividend rate					3.60%
Forecast
Cash Dividend
Dividends paid to common shareholders		$ 7,200,000
Common stock dividends paid to preferred shareholders		$ 1,100,000
Preferred dividends	$ 2,300,000
Subsequent event
Cash Dividend
Quarterly dividend declared, per share (in dollars per share)				$ 0.225
Subsequent event | Common Stock
Cash Dividend
Quarterly dividend, date of declaration				Apr. 30, 2019
Quarterly dividend, date of distribution		May 24, 2019
Quarterly dividend, date of record			May 13, 2019
Subsequent event | Preferred Stock
Cash Dividend
Quarterly dividend, date of declaration				Apr. 30, 2019
Quarterly dividend, date of distribution	Jul. 01, 2019