Title Insurance Business - Additional Information (Details)			9 Months Ended	12 Months Ended
	Aug. 01, 2018 USD ($)	Feb. 01, 2017 USD ($) business shares	Oct. 31, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Contingent consideration in acquisition of controlling interest in equity method investment				$ 0	$ 0	$ 24,000
Business combination contingent consideration fair value adjustment				(260,000)	1,950,000	0
Goodwill, impairment loss					7,278,000
Intangible assets				0	0
Salaries and employee benefits				77,411,000	74,669,000	62,996,000
Reltco
Business Acquisition [Line Items]
Number of businesses acquired | business		2
Asset book value		$ 5,766,000
Liabilities assumed		4,681,000
Consideration transferred		12,700,000
Payments to acquire businesses, gross		$ 7,798,000
Number of shares issued (in shares) | shares		27,724
Contingent number of shares to be issued (up to) (in shares) | shares		184,012
Contingent consideration, liability, cash		$ 3,800,000
Contingent consideration in acquisition of controlling interest in equity method investment		4,300,000		0	1,900,000	0
Contingent consideration, target net income		$ 6,000,000
Contingent consideration, earn-out period (in years)		4 years
Contingent consideration, liability		$ 4,300,000
Business combination contingent consideration fair value adjustment			$ 350,000		(4,350,000)
Acquisition related costs				0	766,000	$ 115,000
Goodwill, impairment loss				7,300,000	7,278,000
Intangible assets				$ 720,000
Contingent consideration liability					4,400,000
Salaries and employee benefits					$ 1,600,000
Financing receivables	$ 3,000,000
Reltco | Customer Relationships
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		3,900,000
Reltco | Noncompete Agreements
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		405,000
Reltco | Trade Names
Business Acquisition [Line Items]
Indefinite-lived intangible assets acquired		$ 1,200,000
Reltco | Expected Term
Business Acquisition [Line Items]
Contingent consideration liability, term					3 years
Reltco | Expected Volatility Rate
Business Acquisition [Line Items]
Contingent consideration liability, measurement input					0.2500
Reltco | Expected Dividend Rate
Business Acquisition [Line Items]
Contingent consideration liability, measurement input					0.0051
Reltco | Monte Carlo Simulation | Contingent Consideration Earn-out | Expected Term
Business Acquisition [Line Items]
Contingent consideration liability, term		4 years	3 years 3 months
Reltco | Monte Carlo Simulation | Contingent Consideration Earn-out | Expected Volatility Rate
Business Acquisition [Line Items]
Contingent consideration liability, measurement input		0.3000	0.3000
Reltco | Monte Carlo Simulation | Contingent Consideration Earn-out | Expected Dividend Rate
Business Acquisition [Line Items]
Contingent consideration liability, measurement input		0.0040	0.0051
Reltco | Scenario, Previously Reported
Business Acquisition [Line Items]
Consideration transferred		$ 15,800,000