Loans Receivable (TDR Pre/Post Modifications) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) number	Dec. 31, 2016 USD ($) number	Dec. 31, 2015 USD ($) number
Mortgage Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts | number	85	90	160
Financing Receivable Modifications Pre Modification Recorded Investment	$ 10,441	$ 11,684	$ 21,053
Pre Modification Weighted Average Rate	6.23%	6.05%	5.42%
Pre Modification Weighted Average Term	390 months	351 months	356 months
Financing Receivable Modifications Post Modification Recorded Investment	$ 10,343	$ 11,625	$ 21,182
Post Modification Weighted Average Rate	4.40%	4.77%	4.35%
Post Modification Weighted Average Term	384 months	439 months	272 months
Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts | number	24	20	9
Financing Receivable Modifications Pre Modification Recorded Investment	$ 13,828	$ 9,833	$ 5,664
Pre Modification Weighted Average Rate	6.05%	5.73%	6.79%
Pre Modification Weighted Average Term	57 months	64 months	66 months
Financing Receivable Modifications Post Modification Recorded Investment	$ 13,829	$ 10,151	$ 13,174
Post Modification Weighted Average Rate	5.73%	5.93%	4.57%
Post Modification Weighted Average Term	62 months	116 months	56 months
Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts | number	107	75	64
Financing Receivable Modifications Pre Modification Recorded Investment	$ 1,391	$ 817	$ 611
Pre Modification Weighted Average Rate	11.68%	13.60%	13.85%
Pre Modification Weighted Average Term	62 months	73 months	71 months
Financing Receivable Modifications Post Modification Recorded Investment	$ 1,430	$ 902	$ 898
Post Modification Weighted Average Rate	10.85%	11.23%	13.43%
Post Modification Weighted Average Term	69 months	66 months	60 months
Auto Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts | number	9		5
Financing Receivable Modifications Pre Modification Recorded Investment	$ 134		$ 130
Pre Modification Weighted Average Rate	7.24%		10.51%
Pre Modification Weighted Average Term	66 months		65 months
Financing Receivable Modifications Post Modification Recorded Investment	$ 135		$ 131
Post Modification Weighted Average Rate	11.75%		10.87%
Post Modification Weighted Average Term	37 months		61 months