Segment Information (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) segment	Sep. 30, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			2
PIRM
Segment Reporting Information [Line Items]
Segment reporting intercompany revenue	$ 2,700	$ 1,700	$ 6,700	$ 4,900
Segment reporting intercompany expense	800	700	2,600	2,300
UWS
Segment Reporting Information [Line Items]
Segment reporting intercompany revenue	800	700	2,600	2,300
Segment reporting intercompany expense	$ 2,700	$ 1,700	$ 6,700	$ 4,900