Loans Receivable - Credit Quality (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 32,026
2019	31,443
2018	13,100
2017	7,295
2016	4,500
Prior	1,199
Loans Receivable, Amortized Cost	89,563	$ 90,164
600 or Less
Financing Receivable, Credit Quality Indicator [Line Items]
2020	3,237
2019	2,781
2018	840
2017	130
2016	86
Prior	16
Loans Receivable, Amortized Cost	7,090
Between 600 and 700
Financing Receivable, Credit Quality Indicator [Line Items]
2020	24,541
2019	25,584
2018	10,656
2017	6,042
2016	3,485
Prior	962
Loans Receivable, Amortized Cost	71,270
700 or Greater
Financing Receivable, Credit Quality Indicator [Line Items]
2020	4,248
2019	3,078
2018	1,604
2017	1,123
2016	929
Prior	221
Loans Receivable, Amortized Cost	$ 11,203