Contingent Liabilities and Commitments with Off-Balance Sheet Risk - Summary of Minimum Future Contractual Obligation Under Renewal of Contract (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Contingent Liabilities and Commitments with Off-Balance Sheet Risk [Line Items]
2016	$ 7,707
2017	$ 2,569

Amount of contractual obligation due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

No definition available.

Name:	us-gaap_ContractualObligationDueInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant