Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Long-term Purchase Commitment [Line Items]
Commitment to contribute capital	$ 43,100	$ 26,600
Private Equity Funds
Long-term Purchase Commitment [Line Items]
Remaining minimum amount committed	2,500	$ 2,800
Student Loan
Long-term Purchase Commitment [Line Items]
Remaining minimum amount committed	7,800
First California Financial Group Inc. [Member]
Long-term Purchase Commitment [Line Items]
Payments for Legal Settlements	$ 1,750