Business Segments (Details 1) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total Revenues - Services and fees									$ 566,956	$ 390,555	$ 304,841
Total Revenues	$ 165,237	$ 180,063	$ 164,684	$ 142,128	$ 102,031	$ 99,681	$ 125,501	$ 95,778	652,112	422,991	322,176
North America [Member]
Segment Reporting Information [Line Items]
Total Revenues - Services and fees									566,837	389,207	301,881
Revenues - Sale of goods									7,935	638	940
Revenues - Interest income - Loans and securities lending									77,221	31,798	2,020
Total Revenues									651,993	421,643	304,841
Australia [Member]
Segment Reporting Information [Line Items]
Total Revenues - Services and fees									58	19	940
Total Revenues									58	19	940
Europe [Member]
Segment Reporting Information [Line Items]
Total Revenues - Services and fees									61	1,329	2,020
Total Revenues									$ 61	$ 1,329	$ 2,020