Fair Value Measurements - Reconciliation of Assets and Liabilities Measured Using Significant Unboservable Inputs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustment	$ (180)	$ (100)
Full House Mortgage Connection, Inc. | Measured on a recurring basis | Contingent consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance at Beginning	6,400
Full House Acquisition		6,300
Fair value adjustment	180	100
Balance at Ending	$ 6,580	$ 6,400