XML 97 R93.htm IDEA: XBRL DOCUMENT v3.20.1
Senior Notes Carrying value of the Senior Notes (Details) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Accumulated Amortization, Debt Issuance Costs $ 464,000 $ 337,000
Senior Notes [Member]    
Debt Instrument [Line Items]    
Principal amount 400,000,000 400,000,000
Debt discount, net of accumulated amortization of $765 and $894, respectively (3,981,000) (4,110,000)
Debt issuance costs, net of accumulated amortization of $216 and $283, respectively (2,077,000) (2,131,000)
Carrying value of the Senior Notes 395,575,000 395,447,000
Accumulated amortization, debt discount 129,000 492,000
Accumulated Amortization, Debt Issuance Costs 283,000 216,000
Senior Notes [Member] | Senior Note Two [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Unamortized Premium $ 1,633,000 $ 1,688,000