Subsequent Events and Liquidity (Details) $ in Thousands				12 Months Ended
	Mar. 27, 2020 emplyee	Mar. 28, 2018	Dec. 08, 2017	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Mar. 31, 2020 USD ($)
Debt Instrument [Line Items]
Total debt				$ 360,000	$ 294,000
Revolving Credit Facility | Credit Agreement
Debt Instrument [Line Items]
Total debt				$ 260,000
Repayment period in full		30 days
Repayment period, installments		6 months
Repayment commencement period		30 days
Unused borrowing capacity		20.00%
Total debt ratio, maximum		3.5
Series B Preferred Stock
Debt Instrument [Line Items]
Dividend rate after failing to pay dividends		12.00%
Series B preferred stock, dividend rate			10.00%	10.00%	10.00%
Base return				$ 199,200
Series B Preferred Stock | Revolving Credit Facility | Credit Agreement
Debt Instrument [Line Items]
Series B preferred stock, dividend rate			10.00%
Subsequent Event
Debt Instrument [Line Items]
Number of employees terminated | emplyee	52
Cash						$ 82,000
Subsequent Event | Revolving Credit Facility | Credit Agreement
Debt Instrument [Line Items]
Total debt						340,000
Subsequent Event | Series B Preferred Stock
Debt Instrument [Line Items]
Base return						$ 195,200