Accounts Payable Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands		Dec. 31, 2017		Dec. 31, 2016
Accounts Payable [Line Items]
Deferred rent obligations		$ 12,822		$ 10,335
Contingent consideration payable		3,440		5,997
Equity in RCG Longview partners II, LLC		6,022		5,948
Interest and Dividends Payable		2,891		3,541
Loss reserves and claims incurred but not reported	[1]	9,464		3,455
Professional fees payable		5,008		3,143
Unearned Premiums	[1]	6,116		2,375
Fees payable		798		1,093
Accrued tax liabilities		7,482		456
Litigation reserve		3,000		0
Accrued expenses and accounts payable		39,490	[2]	11,182
Accounts payable, accrued expenses and other liabilities		96,533		$ 47,525
Hollenfels [Member]
Accounts Payable [Line Items]
Accrued Liabilities		$ 18,000

[1] Balances relate to the Company's reinsurance business entered into during 2016 (See Note 17).

[2] As of December 31, 2017, the balance includes premiums accrued but not yet paid of $18.0 million related to the Company’s reinsurance business.