Loans Receivable - Aging of the Loans Receivable Balance (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivable (percentage)	[1]	12.10%	14.30%
Current loans receivable (percentage)	[1]	87.90%	85.70%
Financing Receivable, Recorded Investment, Nonaccrual Status		$ 1,094	$ 1,072	[1]
30-59 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivable (percentage)	[1]	5.40%	6.80%
60-89 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivable (percentage)	[1]	2.80%	3.20%
90 or more days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivable (percentage)	[1]	3.90%	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.