Annual report pursuant to Section 13 and 15(d)

Acquisitions (Narrative) (Details)

Acquisitions (Narrative) (Details) - USD ($)					1 Months Ended		3 Months Ended								5 Months Ended	12 Months Ended
Acquisitions (Narrative) (Details) - USD ($)	Jul. 31, 2015	Jan. 02, 2015	Oct. 15, 2014	Jul. 31, 2014	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Acquisition-related expense																$ 528,000	$ 2,342,000	$ 0
Extinguishment of debt																	20,022,000	110,850,000
Revenues							$ 294,333,000	$ 282,214,000	$ 296,748,000	$ 278,823,000	$ 264,950,000	$ 223,732,000	$ 220,753,000	$ 211,818,000		1,152,118,000	921,253,000	793,116,000
Net (loss) income																(11,213,000)	33,352,000	(522,000)
Goodwill						$ 115,238,000	$ 125,572,000				115,238,000				$ 115,238,000	125,572,000	115,238,000	$ 90,501,000
SSN
Business Acquisition [Line Items]
Consideration transferred		$ 47,287,000
Goodwill, deductible period for income tax purposes		15 years
Cash paid in acquisition																25,000,000
Revenues																116,207,000
Net (loss) income																$ 1,629,000
Goodwill		$ 9,282,000
Identifiable intangible assets		$ 30,901,000
SSN \| Promissory Notes
Business Acquisition [Line Items]
Imputed interest rate		5.10%
SSN \| Promissory Notes \| 0.41% Promissory Notes
Business Acquisition [Line Items]
Notes payable-long term		$ 25,000,000
Interest rate, stated percentage		0.41%
SSN \| Promissory Notes \| 1.74% Promissory Notes
Business Acquisition [Line Items]
Notes payable-long term		$ 20,000,000
Interest rate, stated percentage		1.74%
Term		4 years
Periodic payment		$ 18,697,000
Imputed interest rate		5.10%
Amount to be paid in excess of net worth of promissory notes		$ 3,590,000
Acquisition-related expense		$ 51,000															523,000
KMS
Business Acquisition [Line Items]
Consideration transferred			$ 24,560,000
Notes payable-long term			$ 8,000,000
Interest rate, stated percentage			1.84%
Term			4 years
Periodic payment			$ 7,508,000
Imputed interest rate			5.50%
Acquisition-related expense																	520,000
Cash paid in acquisition			$ 11,000,000
Stock issued in acquisition, shares			1,440,922
Stock issued in acquisition, value			$ 6,052,000
Goodwill			13,269,000
Identifiable intangible assets			$ 10,859,000
KMS \| Promissory Notes
Business Acquisition [Line Items]
Imputed interest rate			5.50%
Highland
Business Acquisition [Line Items]
Consideration transferred				$ 11,566,000
Notes payable-long term				7,000,000
Acquisition-related expense																	566,000
Cash paid in acquisition				$ 3,613,000
Stock issued in acquisition, shares				2,540,762
Stock issued in acquisition, value				$ 7,953,000
Extinguishment of debt				21,834,000
Goodwill				11,515,000
Identifiable intangible assets				$ 45,587,000
KMS Financial Services, Inc. and Securities Service Network, Inc. (SSN)
Business Acquisition [Line Items]
Stock issued in acquisition, shares																3,981,684
Non-recurring income tax benefit eliminated from the pro forma results																	21,238,000
Highland and KMS
Business Acquisition [Line Items]
Revenues															46,004,000
Net (loss) income															59,000
Sunset Financial Services
Business Acquisition [Line Items]
Consideration transferred						4,380,000
Cash paid in acquisition						1,621,000
Contingent consideration, liability						2,759,000					2,759,000				2,759,000		2,759,000
Goodwill						21,000					21,000				21,000		21,000
Identifiable intangible assets						$ 4,359,000					$ 4,359,000				$ 4,359,000		$ 4,359,000
Select
Business Acquisition [Line Items]
Consideration transferred	$ 2,019,000
Cash paid in acquisition	503,000
Contingent consideration, liability	1,012,000
Deferred payment on first anniversary	$ 504,000
Earn out period	4 years
Identifiable intangible assets	$ 2,019,000
Dalton Strategic Investment Services, Inc.
Business Acquisition [Line Items]
Consideration transferred					$ 2,689,000
Cash paid in acquisition					2,100,000
Contingent consideration, liability					589,000				589,000
Goodwill					$ 14,000				14,000
Earn out period					3 years
Identifiable intangible assets					$ 2,675				$ 2,675