Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Schedule of Segment Reporting Information, by Segment (Parenthetical) (Details)

v3.19.1
Segment Information - Schedule of Segment Reporting Information, by Segment (Parenthetical) (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Segment Reporting Information [Line Items]      
Assets, Total $ 1,112,349,000   $ 1,102,935,000
Facility lease expense 217,000 $ 433,000  
Corporate, Non-Segment      
Segment Reporting Information [Line Items]      
Assets, Total $ 93,340 $ 129,703