Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Identified Intangible Assets

The amount of identified intangible assets, including the respective amounts of accumulated amortization, are as follows:

	June 30, 2018			December 31, 2017
Database	$	35,877,000		$	33,538,000
Accumulated amortization		(25,840,000	)		(23,705,000	)
Database, net		10,037,000			9,833,000
Customer relationships		14,100,000			14,100,000
Accumulated amortization		(10,634,000	)		(10,182,000	)
Customer relationships, net		3,466,000			3,918,000
Website		22,215,000			20,729,000
Accumulated amortization		(16,433,000	)		(15,006,000	)
Website, net		5,782,000			5,723,000
Intangibles, net	$	19,285,000		$	19,474,000