Business Combinations - Narrative (Details) - USD ($)		3 Months Ended									6 Months Ended	12 Months Ended			19 Months Ended
	Nov. 30, 2014	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2016	Dec. 01, 2014
Business Acquisition [Line Items]
Gain on purchase of mortgage affiliate												$ 0	$ 0	$ 3,001,000
Change in fair value of RML earn-out liability		$ 708,000	$ 3,250,000	$ 687,000	$ 130,000	$ 1,225,000	$ 780,000	$ 587,000	$ 1,502,000			4,775,000	4,094,000	$ 0
RML
Business Acquisition [Line Items]
Voting interests acquired																76.50%
Ownership prior to acquisition of company	23.50%
Fair value of equity interest in acquiree	$ 9,000,000
Gain on purchase of mortgage affiliate										$ 3,000,000
Liability for future earn out payments						6,600,000							6,600,000			$ 7,300,000
Change in fair value of RML earn-out liability												4,800,000	$ 4,100,000
Amount of first payment made to sellers		$ 3,800,000				$ 4,900,000
Accrued liability relating to acquisition payments												186,000
RML | Accounting for Payments Made to Former Equity Owners | Restatement Adjustment
Business Acquisition [Line Items]
Change in fair value of RML earn-out liability											$ 765,000	$ 2,800,000			$ 2,300,000
RML | First tier payment
Business Acquisition [Line Items]
Percent of revenue used to calculate liability												40.00%
RML | Second tier payment
Business Acquisition [Line Items]
Percent of revenue used to calculate liability												50.00%
RML | Third tier payment
Business Acquisition [Line Items]
Percent of revenue used to calculate liability												70.00%
RML | Fourth tier payment
Business Acquisition [Line Items]
Percent of revenue used to calculate liability												85.00%
RML | Fifth tier payment
Business Acquisition [Line Items]
Percent of revenue used to calculate liability												55.00%
RML | Minimum | First tier payment
Business Acquisition [Line Items]
Revenue range used to calculate liability												$ 1,000,000
RML | Minimum | Second tier payment
Business Acquisition [Line Items]
Revenue range used to calculate liability												2,000,000
RML | Minimum | Third tier payment
Business Acquisition [Line Items]
Revenue range used to calculate liability												3,000,000
RML | Minimum | Fourth tier payment
Business Acquisition [Line Items]
Revenue range used to calculate liability												4,000,000
RML | Minimum | Fifth tier payment
Business Acquisition [Line Items]
Revenue range used to calculate liability												6,000,000
RML | Maximum | First tier payment
Business Acquisition [Line Items]
Revenue range used to calculate liability												2,000,000
RML | Maximum | Second tier payment
Business Acquisition [Line Items]
Revenue range used to calculate liability												3,000,000
RML | Maximum | Third tier payment
Business Acquisition [Line Items]
Revenue range used to calculate liability												4,000,000
RML | Maximum | Fourth tier payment
Business Acquisition [Line Items]
Revenue range used to calculate liability												$ 6,000,000