7. Intangible Assets

6 Months Ended

Jun. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

The net carrying amount of intangible assets are as follows (in thousands):

	June 30, 2019			December 31, 2018
Customer relationships	$	941		$	941
Less: accumulated amortization		(801	)		(774	)
Total	$	140		$	167

Amortization expense is included in general and administrative expenses and totaled $13,000 and $18,000 for the three months ended June 30, 2019 and 2018, respectively, and $27,000 and $36,000 for the six months ended June 30, 2019 and 2018, respectively.