Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Assets and Liabilities - Nonrecurring Basis (Details)

Fair Value of Assets and Liabilities - Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Receivables from clearing brokers	$ 27,835	$ 24,068
Receivables from other broker-dealers	5,597	7,078
Liabilities
Contingent consideration liabilities	2,520	2,230
Fair Value \| Level 2
Liabilities
Notes payable, net	333,145	266,844
Fair Value, Measurements, Nonrecurring \| Carrying Value
Assets
Cash and cash equivalents	251,033	182,693
Receivables from clearing brokers	27,835	24,068
Receivables from other broker-dealers	5,597	7,078
Notes receivable, net	7,459	5,809
Other receivables, net	67,419	68,942
Insurance trailing commissions receivable	67,290	64,300
Total assets	426,633	352,890
Liabilities
Accrued compensation	36,871	39,264
Commissions and fees payable	106,004	105,306
Accounts payable and accrued liabilities	34,677	46,511
Accrued interest	0	123
Notes payable, net	315,898	254,072
Total liabilities	493,450	445,276
Fair Value, Measurements, Nonrecurring \| Fair Value
Assets
Cash and cash equivalents	251,033	182,693
Receivables from clearing brokers	27,835	24,068
Receivables from other broker-dealers	5,597	7,078
Notes receivable, net	7,459	5,809
Other receivables, net	67,419	68,942
Insurance trailing commissions receivable	67,290	64,300
Total assets	426,633	352,890
Liabilities
Accrued compensation	36,871	39,264
Commissions and fees payable	106,004	105,306
Accounts payable and accrued liabilities	34,677	46,511
Accrued interest	0	123
Notes payable, net	333,145	266,844
Total liabilities	510,697	458,048
Fair Value, Measurements, Nonrecurring \| Fair Value \| Level 1
Assets
Cash and cash equivalents	251,033	182,693
Receivables from clearing brokers	0	0
Receivables from other broker-dealers	0	0
Notes receivable, net	0	0
Other receivables, net	0	0
Insurance trailing commissions receivable	0
Total assets	251,033	182,693
Liabilities
Accrued compensation	0	0
Commissions and fees payable	0	0
Accounts payable and accrued liabilities	0	0
Accrued interest	0	0
Notes payable, net	0	0
Total liabilities	0	0
Fair Value, Measurements, Nonrecurring \| Fair Value \| Level 2
Assets
Cash and cash equivalents	0	0
Receivables from clearing brokers	27,835	24,068
Receivables from other broker-dealers	5,597	7,078
Notes receivable, net	7,459	5,809
Other receivables, net	67,419	68,942
Insurance trailing commissions receivable	67,290	64,300
Total assets	175,600	170,197
Liabilities
Accrued compensation	36,871	39,264
Commissions and fees payable	106,004	105,306
Accounts payable and accrued liabilities	34,677	46,511
Accrued interest	0	123
Notes payable, net	333,145	266,844
Total liabilities	$ 510,697	$ 458,048