Segment Information (Narrative) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) segment	Jun. 30, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			2
PIRM
Segment Reporting Information [Line Items]
Segment reporting intercompany revenue	$ 2,200	$ 1,700	$ 4,000	$ 3,200
Segment reporting intercompany expense	1,000	800	1,800	1,600
UWS
Segment Reporting Information [Line Items]
Segment reporting intercompany revenue	1,000	800	1,800	1,600
Segment reporting intercompany expense	$ 2,200	$ 1,700	$ 4,000	$ 3,200