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PROPERTY AND EQUIPMENT
12 Months Ended
Dec. 31, 2017
Property Plant And Equipment [Abstract]  
PROPERTY AND EQUIPMENT

7.

PROPERTY AND EQUIPMENT:

Property and equipment consist of the following (in thousands):

 

 

 

December 31,

 

 

 

2017

 

 

2016

 

Land

 

$

1,006

 

 

$

820

 

Building and improvements

 

 

24,101

 

 

 

20,384

 

Office and lab equipment

 

 

33,269

 

 

 

30,728

 

Furniture, fixtures and computer related assets

 

 

4,431

 

 

 

3,097

 

Construction-in-progress

 

 

30,011

 

 

 

4,341

 

 

 

 

92,818

 

 

 

59,370

 

Less: Accumulated depreciation

 

 

(36,368

)

 

 

(32,167

)

Property and equipment, net

 

$

56,450

 

 

$

27,203

 

Depreciation expense was $4.9 million, $4.3 million and $3.1 million for the years ended December 31, 2017, 2016 and 2015, respectively.