PROPERTY AND EQUIPMENT

12 Months Ended

Dec. 31, 2020

Property Plant And Equipment [Abstract]

PROPERTY AND EQUIPMENT

6. PROPERTY AND EQUIPMENT:

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

	December 31,
	2020			2019
Land	$	2,642		$	2,642
Building and improvements		53,568			47,994
Office and lab equipment		85,881			74,726
Furniture, fixtures and computer related assets		8,921			7,592
Construction-in-progress		23,594			12,194
		174,606			145,148
Less: Accumulated depreciation		(72,493	)		(57,276	)
Property and equipment, net	$	102,113		$	87,872

Depreciation expense was $15.2 million, $12.5 million and $8.6 million for the years ended December 31, 2020, 2019 and 2018, respectively.