Loans Receivable - Aging of the Loans Receivable Balance (Details) - USD ($) $ in Thousands		6 Months Ended	12 Months Ended
		Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivable (percentage)	[1]	14.90%	14.30%
Current loans receivable (percentage)	[1]	85.10%	85.70%
Balance of credit card loans on nonaccrual status	[1]	$ 1,219	$ 1,072
30-59 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivable (percentage)	[1]	7.10%	6.80%
60-89 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivable (percentage)	[1]	3.60%	3.20%
90 or more days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivable (percentage)	[1]	4.20%	4.30%
Balance of Loans Receivable 90 or More Days Past Due and Still Accruing Interest and Fees	[1]	$ 0	$ 0

[1] This aging is based on the contractual amounts outstanding for each loan as of period end, and does not reflect the fair value adjustments for the Acquired Loans.