Loans and Allowance for Losses - Schedule of Past Due Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
90-Days Delinquencies	$ 52,366		$ 26,881
Net Credit (Recoveries)/Losses	0	$ 16
Loans subject to removal-of-account provisions	100		100
On-balance sheet [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90-Days Delinquencies	47,219		19,577
Net Credit (Recoveries)/Losses	0	16
Off-balance sheet [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90-Days Delinquencies	5,147		$ 7,304
Net Credit (Recoveries)/Losses	$ 0	$ 0