5.	*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

The Company capitalized approximately $1,141,000 and $1,529,000 during the three months ended June 30, 2018 and 2017, respectively, and approximately $2,339,000 and $2,777,000 during the six months ended June 30, 2018 and 2017, respectively, to the database intangible asset. The Company capitalized approximately $735,000 and $871,000 during the three months ended June 30, 2018 and 2017, respectively, and $1,486,000 and $1,751,000 during the six months ended June 30, 2018 and 2017, respectively, to the website intangible asset.

Amortization expense for intangible assets aggregated approximately $2,008,000 and $4,014,000 for the three and six months ended June 30, 2018, of which approximately $1,085,000 and $2,135,000 related to the database, which is charged to cost of sales, approximately $225,000 and $452,000 related to customer relationships, which is charged to sales and marketing expense and approximately $698,000 and $1,427,000 related to website development, which is charged to product development expense, all in the Reis Services segment. Amortization expense for intangible assets aggregated approximately $1,696,000 and $3,369,000 for the three and six months ended June 30, 2017, of which approximately $917,000 and $1,789,000 related to the database, approximately $231,000 and $462,000 related to customer relationships and approximately $548,000 and $1,118,000 related to website development.