INTANGIBLE ASSETS AND OTHER ASSETS

We review our amortizable long-lived assets for impairment annually or whenever events indicate that the carrying amount of the asset (group) may not be recoverable. An impairment loss may be needed if the sum of the future undiscounted cash flows is less than the carrying amount of the asset (group). The amount of the loss would be determined by comparing the fair market value of the asset to the carrying amount of the asset (group).

We performed an impairment test as of September 30, 2015 due to the significant decline in the market price of our stock. As a result of this testing, we recorded impairment charges related to our long-lived assets of approximately $7.0 million during the three months ended September 30, 2015. The impairment charges include $0.8 million related to property and equipment and $6.2 million related to amortizable intangibles (see table below).

Long-lived intangible assets and other assets consisted of the following:



	Dollars in Thousands
	December 31, 2015
	Cost		Accumulated Amortization		Impairment Charge		Net Book Value
Acquired technology	$	9,009	$	4,611	$	4,398	$	—
Assay royalties	1,434		973		461		—
Third party payor relationships	367		116		251		—
Tradenames and trademarks	824		439		385		—
Customer relationships	652		130		522		—
Covenants not to compete	184		184		—		—
Patents	980		126		148		706
Intellectual property	671		207		—		464
	$	14,121	$	6,786	$	6,165	$	1,170



	Dollars in Thousands
	December 31, 2014
	Cost		Accumulated Amortization		Net Book Value		Included in assets held for sale		Included in continuing operations
Acquired technology	$	9,009	$	3,995	$	5,014	$	5,014	$	—
Assay royalties	1,434		819		615		615		—
Third party payor relationships	367		98		269		269		—
Tradenames and trademarks	824		351		473		473		—
Customer relationships	652		98		554		554		—
Covenants not to compete	184		138		46		46		—
Patents	815		87		728		157		571
Intellectual property	266		86		180		—		180
	$	13,551	$	5,672	$	7,879	$	7,128	$	751




	Estimated Useful Life
Acquired technology	7 – 10 years
Assay royalties	7 years
Third party payor relationships	15 years
Tradenames and trademarks	7 years
Customer relationships	15 years
Covenants not to compete	3 years
Patents	Life of the patent
Intellectual property	7 years

Amortization expense for intangible assets was $0.1 million and $0.1 million during the years ended December 31, 2015 and 2014. Amortization expense for intangible assets for each of the five succeeding fiscal years is expected to be $0.2 million, $0.1 million, $0.1 million, $0.1 million and $0.1 million for the years ended December 31, 2016, 2017, 2018 2019 and 2020, respectively.

Other assets include U.S. security deposits and deferred tax assets, net of applicable valuation allowances.